Lingula fossil facts Atrypa, genus of extinct brachiopods, or lamp shells, that has a broad time range and occurs abundantly as fossils in marine rocks from the Silurian through the Early Carboniferous (444 million to 318 million years ago). Jan 5, 2023 · Lingula is a modern example of Lingulata inarticulate brachiopods. anatina genome and shows that despite Lingula's reputation as a "living fossil" its genome is actively evolving. very rare cases preserved–as a darker midline through the. O pedúnculo é musculado e comprido e consegue escavar o fundo arenoso para garantir a fixação. [1] Lingula is a good example of a living fossil. Dunbarella was a thin-shelled bivalve which probably swam through the sea like present day scallops. Recognizing the symptoms of lingular pneumonia is crucial for early diagnosis and treatment. anatina genome and shows that despite Lingula's reputation as a "living fossil" its genome is actively Oct 1, 2022 · Williams et al. Longest dimension of specimen is approximately 4. Lamp shells - Anatomy, Habitat, Feeding: Two major groups of brachiopods are recognized based on the articulation of the valves (shells) by teeth and sockets. 2 Brachiopods vs. tenuissima (Bronn, 1837); Lingularia similis Biernat & Emig, 1993 The genus Composita consists of smooth-shelled athyroid brachiopods which in North America have a range from Late Devonian or Early Mississippian to Permian. Below is a photograph of a Cincinnati fossil of Lingula (left) and a photograph of a living Lingula specimen. Their resilience and adaptability are truly remarkable. May 1, 2003 · Lingula is often considered a "living-fossil" based on its supposed lengthy morphological conservatism owing to its absence of evolution, and its remarkable survival for more than 550 M. They have a fossil record stretching back to the start of the Cambrian Period, some 570 million years ago (Table 1). Lingulata is a class of brachiopods, among the oldest of all brachiopods having existed since the Cambrian period (). As a result, most of the Phanerozoic lingulids have Mar 16, 2025 · The lingula is a small tongue-like projection of the left lung that can be mentioned on radiology reports. Oct 7, 2024 · Lingula is a genus of brachiopods within the class Lingulata. Lingula lives in burrows in barren sandy coastal seafloor and f Fossil inarticulate brachiopod Lingula punctata from the Devonian Ludlowville Fm. On the right, shells of recent brachiopods, including the genus Lingula. Bivalves –– 1. Authors: Shujuan Yang. Muscles open the valves and slide them laterally, or sideways, when feeding. What do living Oct 25, 2019 · Some groups like the lingulids have changed very little in shape over the last 500 million years. This article will discuss the lingula and some of the abnormalities that can be identified on imaging studies. The modern species are almost the same as the first fossils. K. However, brachiopods are quite rare today. Brachiopods have a long and rich palaeontological history. It's a very primitive genera and that is probably a reason for it's longevity. September 2013; Journal of Paleontology 87(5):902-908; DOI:10. They are considered living fossils, with 3 orders present in today’s oceans. Early Pleistocene 0. Like all brachiopods, it is a filter feeder. anatina from Senegal in West Africa, however, considering that its type locality is the Moluccas, this population may represent a different species. Jan 9, 2025 · Living fossils have survived through countless changes in the Earth's environment. Lingula lives in mud or sand and is attached at the bottom of its burrow. anatina through size distribution approach, length-weight relationship, and condition factors. Sep 25, 2024 · This study explores Lingula’s ecological role, its significance in marine biodiversity, and its economic importance in coastal communities. Like its relatives, it has two unadorned organo-phosphatic valves and a long fleshy stalk. It lived on the sea floor in apparently deeper water than Lingula today. This conclusion is based on the typical apparently unchanged "linguliform" shape of the shell. Atrypa is a genus of brachiopod with round to short egg-shaped shells covered with many fine radial ridges (or costae). Apr 24, 2023 · (A–F) Hand specimens and trace fossils indicating the lifestyle of the Linguloidea: (A) epibenthic Neobolus wulongqingensis from the Cambrian Stage 4, Wulongqing formation, (B and C) infaunal Pseudolingula quadrata from the Middle Ordovician, and (D–F) infaunal modern Lingula anatine; anterior view of the infaunal Lingula Anatina showing However, from the Cambrian to the Permian (542 to 252 million years ago), another group of organisms called brachiopods dominated the world's oceans. One example is the brachiopod Lingula, which is found as fossils in the rocks of Cincinnati. Oct 1, 2022 · Lingula parva is only known from the Gulf of Guinea in western Africa, isolated from all other living Lingula that reside in the Indo-West Pacific. This difference can be remedied by a careful examination of the recorded specimens of congeneric species of the genus Lingula. What is lingula fossil? Lingula is a genus of brachiopods in the class Lingulata. . This The first descriptions of Lingula were made from then extant specimens by three famous French scientists: BRUGUIÈRE, CUVIER, and LAMARCK. The genus Lingula has survived virtually unchanged from the Cambrian to the present day. 9 cm (whole slab) / 2 cm (shell only). In the present study L. Sep 6, 2023 · Brachiopods are a group of ancient marine invertebrates that are still found today, so they are known as "living-fossil". This month’s fossil is the bivalve, Anthraconaia. The genus Lingula is known, virtually unchanged, from fossils extending back at least 400 million years, making it the oldest known animal genus. Here we decode the 425-Mb genome of Lingula anatina to gain insights into brachiopod evolution. Lingula is a genus of brachiopods that has existed for about 500 million years. Some of the oldest shelly invertebrate fossils known are brachiopods. In this environment, the group has maintained itself as "living fossils" with virtually no change in external form down to the present day. Emig (1982) recorded L. Although occurring in normal marine environments, their fossil remains are much more common in shaley beds probably laid down in poorly oxygenated brackish waters, ill-suited for most marine invertebrates. Lingula uses its pedicle to move up and down in the vertical burrow in There are about 100 to 350 Brachiopod species living; the fossil species number 12,000. Another shelled animal was the brachiopod Lingula. waikatoensis is retained but this expresses the separation in time and space from living Indo-Pacific L. Jan 5, 2023 · The modern Lingula brachiopod looks just like the Pennsylvanian Lingula fossils (like the one above) found in Kentucky. An abundance of Lingula fossils from the Silurian, with morphology very similar to that of extant species, inspired Darwin with the idea of ‘living fossils. The origin of brachiopods is unknown. Three distinct COI lineages were detected for L. In fossil specimens the coelom is visible—and in. Sep 23, 2015 · AsianScientist (Sep. Living fossils are not identical to their ancestors, of course. The Lingula Flags are encountered intermittently along the north coast between Porthgain and Pwlldawnau to the northwest of St Nicholas. 5 million Linguliferous: Definition, Etymology, Usage, and Related Information Definition. It’s a small, easy-to-misidentify shell fossil found in Kentucky’s coal fields. and were referred to Lingula on the basis of similarity in the form of the shell. Inarticulata(Nonarticulate lampshells) Phylum BrachiopodaClass InarticulataNumber of families 3Thumbnail description Exclusively marine group of lophophorate animals that are suspension feeders attached at the base to the ocean bottom; they are called "inarticulated" because their shells lack articulation Source for information on Inarticulata (Nonarticulate Lampshells): Grzimek's Animal Life Lingulafossil aus dem Devon. Like its relatives, it has two unadorned organophosphatic valves and a long fleshy stalk. Reference: 1901. Lingula waikatoensis Pen, 1930? Lingula eocenica Moroz & Ermokhyna, 1990 Diversity. Fossile vivente [ modifica | modifica wikitesto ] Apr 1, 2012 · The presence of alternating banding composition seen both in the modern Glottidia as well as in the fossil lingulides was not as distinctly observed in the analysis of the modern Lingula specimen, likely due to a ≤ 20 μm chitinous periostracum on the outer surface of the shell (Fig. Linguliferous (adj): Relating to or carrying certain characteristics, formations, or features that resemble the genus Lingula, typically found in geological and paleontological contexts. The genus Lingula of Brachiopods is often called a living fossil, as a similar genus existed during the Ordovician Period. [3] Brachiopods are benthic (bottom dwelling), marine (ocean), bivalves (having two shells). The present writers have attempted to trace the development of the genus through geologic time. 23, 2015) – Scientists have sequenced the first genome of a lingulid brachiopod, Lingula anatina. Maximum dimension of specimen is approximately 11. Lingulella is a genus of phosphatic-shelled [6] brachiopod. In spite of these arguments aboutLingula, it is still the most morphologically primitive member among the extant The modern example of a brachiopod at the top of this page is an example of Lingula which typifies this group (you may remember from the lecture that they have no hinge, and make their shell out of organophosphate). Distribution: Worldwide. Lingula lives from the tidal zone to 23 fathoms (about 42 metres [138 feet]). This is why Lingula is known as a living fossil. They are often called "living fossils" because of their long history. The Lingula shown here lived in Scotland during the Carboniferous Period (360-290 million years ago). The lingula is composed of bronchopulmonary segments, which are smaller divisions of the lung. 250) - two origins may be possible: (i) From the Latin Li(n)gula (diminutive of lingua “tongue”) indicating tongue-shaped elements; or (ii) Erudite diminutive from the Latin lingua “tongue Sep 18, 2015 · The evolutionary origins of lingulid brachiopods and their calcium phosphate shells have been obscure. The best known inarticulate genera are Lingula and Glottidia of which preserved Lingula are commonly used in laboratory studies of brachiopod anatomy. G. Brachiopods are easily distinguished from molluscs Sep 1, 2013 · Deep Genetic Divergence Within a “Living Fossil” Brachiopod Lingula anatina. Geology! Fossil Brachiopod Shells are sometimes replaced by Pyrite! (aka Fool's Gold) In the fossil record, the "shells" (called valves) of brachiopods sometimes undergo a process in which they are replaced with pyrite aka fool's gold! This makes them golden and sparkly! Lingulid brachiopods, such as Lingula anatina, are regarded as one of the most primitive of brachiopods. Search for lingule feminine noun 1791 lingula (from J. Aug 27, 2022 · Who named Lingula? The genus Lingula was created in 1791 (not 1797) by Bruguière and in 1801 Lamarck named the first species L. It is most commonly described on chest X-rays and CT scans. ’ Mar 5, 2020 · Brachiopod, Lingula anatina. Many animals specialize in a particular niche within the ecosystem. [1] Composita had a cosmopolitan global distribution, having lived on every continent except Antarctica. Lingula lässt sich fossil schon im Silur vor 400 Millionen Jahren nachweisen und ist damit eine der erdgeschichtlich ältesten, heute noch lebenden Gattungen und gilt als lebendes Fossil. In Britain they are only found in a few Scottish sea-lochs. ' Nevertheless, shells of fossilized and living lingulids show considerable diversity in chemical structure 20 , 21 . Como todos os braquiópodes, a Lingula alimenta-se por filtração com a ajuda do lofóforo. 5. Several fossils have been found that date back to more than 400 Ma. Es principalmente un género indo-pacífico que se cosecha para consumo humano en Japón y Australia. Mindat. Lingulata is a class of brachiopods, among the oldest of all brachiopods having existed since the Cambrian period (541 million years ago). 1666/12-127. In fact this animal was among those which made Darwin first coin the term. The similarity of the shell form of the extant Lingula and these fossils led DARWIN in 1859 to create the description "living fossil" in his book "On the Origin of Species". Etymology: Name means "little tongue" in Latin because of its thin, tongue-shaped shell. Mar 22, 2010 · The taxonomy of fossil and living discinid brachiopods is mainly based on the ornamentations of dorsal and ventral valves, the convexity of shells and the structure associated with the pedicle (e Oct 15, 2023 · Lingular pneumonia is a respiratory infection that affects the left lung’s upper lobe, known as the lingula. Compared with the remarkable morphological stasis, genetic evidence of extant Lingula species displays deep genetic divergence. These small, shelled organisms resemble clams but belong to a distinct phylum. Other articles where Lingula is discussed: evolution: Gradual and punctuational evolution: …fossils”—for instance, the lamp shell Lingula, a genus of brachiopod (a phylum of shelled invertebrates) that appears to have remained essentially unchanged since the Ordovician Period, some 450 million years ago; or the tuatara (Sphenodon punctatus), a reptile that has shown little morphological Sep 18, 2015 · A new article presents the results of their analysis of over 34,000 genes comprising the L. Over 12,000 fossil species of these hinge-valved organisms have been described, but only 330 species remain alive today. They have a large, and muscular pedicle, and adductor muscles to open and close the valves, which are often quite rectangular. length of the fossilized pedicle (Fig. Brachiopods first appeared over 500 million years ago, and some types (such as Lingula, which lives in a burrow) have changed very little over this period of time. They are also among the most morphologically conservative of the brachiopods, having lasted from their earliest appearance to the present with very little change in shape. Unlike most brachiopods, it lives successfully in brackish water environments such as tidal mud flats. Mar 26, 2025 · The Unchanged Lingula The Unchanged Lingula (image credits: wikimedia) Lingula is a brachiopod that has inhabited Earth’s oceans for over 500 million years. This is why some brachiopods are referred to as living fossils. A Lingula surgiu no periodo Cambriano e é o género mais antigo que These strata are well-displayed in the coastal cliffs at St Justinian's and between Porthllisky and Newgale though exposures inland are less frequent. Composita, genus of extinct brachiopods, or lamp shells, found as fossils in marine rocks of the Carboniferous to Permian periods (from 359 million to 251 million years ago). Function of the Lingula Chapter contents: 1. Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Morphologic variation in the genus has been recognized by earlier workers, but few have tried to show exact relationships among the various forms. Lingula has long been considered an example of a living fossil; in fact, the perceived longevity of this genus led Darwin to coin this concept. By examining its unique evolutionary adaptations and long-standing presence in marine ecosystems, the research highlights the necessity of conserving Lingula as a vital component of marine heritage. May 31, 2010 · Lingula is a Brachiopod that has been found in the fossil record from the Cambrian all the way up to today's ocean floors. Lingula is a genus of brachiopods within the class Lingulata. [2] Because fossils are made of minerals too! and/or . anatina, which was then studied by Cuvier (1802). Learn Lingulata facts for kids. These segments contain bronchioles, alveoli, and blood vessels that facilitate gas exchange. The purpose of this study was to determine reproductive biology through sex ratio approach, gonad maturity stages, body mass weight and growth pattern of L. They prefer quiet water and protected surroundings. 3 Brachiopod Paleoecology –– 1. anatina, one of which is from Qinhuangdao (Hebei あるいは狭義にはシャミセンガイ科の1種 Lingula jaspidea （ Lingula rostrum のシノニム、和名：ドングリシャミセンガイ [5] ）の和名ともされる [1] [2] が、ここではシャミセンガイ科を扱う。 シャミセン「貝」という名で、貝殻様の殻を持つが、貝類ではない。 Jan 30, 2023 · This month’s fossil is commonly mineralized, so it may look like small copper, golden or iridescent shells in dark gray to black shale. The largest fossil (Gigantoproductus giganteus) species had a shell length of over 30 cm The lingula is shaped like a tongue, hence its name, and it extends anteriorly from the upper lobe. Lingula anatina has been attracted researchers because its morphological characteristics show limited changes compared to the ancestor. 53. Few of these pertinent characters are available in most fossil specimens of Lingula, and it is probable that many fossil species are too finely separated. This living fossil status is now considered unjustified. org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Lingula is known to have existed since the early Ordovician period. Aug 12, 2022 · Fossil brachiopod Lingula delia (PRI 77399) from the Devonian Windom Shale of Madison, New York. May 20, 2016 · The geographic population patterns of Lingula anatina across the Indo-West Pacific region are analyzed based on mitochondrial COI and nuclear EF-1α gene sequences. Oct 7, 2024 · Evolution and Fossil Records. Ushatinskaya (2001) have placed fossil lingulids in genera other than Lingula. Even though L. The oldest Lingula fossils are found in Lower Cambrian rocks dating to roughly 550 million years ago. [1] Lingula is a good example of a living fossil. Lingular Pneumonia Symptoms. The following are extinct species and genera belonging to the family Lingulidae. Marine fossils found locally are evidence that this sea was rich in life. A possible ancestor is a sort of ancient "armored slug" known as Halkieria that was recently been found to have had small brachiopod-like shields on its head and tail. Approximately 450 species of living brachiopods are currently known, and have traditionally been divided into two classes: Inarticulata (orders Lingulida and Acrotretida) and Articulata (orders Rhynchonellida, Terebratulida and As valvas têm ornamentação fina, sob a forma de estrias raidiais e concêntricas. These orders do not contain fossil brachiopods commonly found in Kentucky. Lingula lives in burrows in barren sandy coastal seafloor and feeds by filtering detritus from the water. Anthraconaia (An-THRAC-oh-NYE-uh) is a fossil bivalve. 5 cm. Lingula (7 species) Lingula adamsi; Lingula anatina; Lingula parva; Lingula reevei; Lingula rostrum; Lingula translucida; Lingula tumidula; Liothyrella (5 species) Liothyrella delsolari; Liothyrella moseleyi; Liothyrella neozelanica; Liothyrella uva; Liothyrella winteri; Macandrevi diamantina; Macandrevia (7 species) Macandrevia africana Fossil brachiopod Lingula delia (PRI 77399) from the Devonian Windom Shale of Madison, New York. Brachiopods are still living in the world’s oceans. Lingula Bruguière, 1791 [1] è un genere di Brachiopodi appartenente alla famiglia Lingulidae (di recente istituzione; precedentemente era inglobato nella classe Inarticulata) . Unlike clams and mussels, brachiopod shells are on t Sep 18, 2015 · The paper published in Nature Communications presents the results of their analysis of over 34,000 genes comprising the L. They are rare today but during the Paleozoic Era they dominated the sea floors. Aug 20, 2007 · The legacy of this group is today represented by two genera: Lingula Bruguière 1797 and Glottidia Dall 1870. anatina genome and sheds light on the process of biomineralization, which helped brachiopods dominate the seas during the early Cambrian period. Index Fossils Index Fossils Lingula anatina is NOT AN INDEX FOSSIL !! , This common fossil has existed over a very long geological time and still lives today! Characteristics of a good index fossil Some typical global index fossils and the ages they indicate. Lingula is often considered to be one of the most ancient living fossils based on its morphological consistency tracing back to their Cambrian relatives. In this article, we will explore the symptoms, causes, imaging and treatment options for lingular pneumonia. The Mysterious “Living Fossil” Brachiopods are marine invertebrates with external shells and a stalk. Lingula or forms very close in appearance have existed possibly since the Cambrian. It is the brachiopod valves that are often found fossilized. Brachiopoda –– 1. Lingula, a brachiopod, is a genus which has lasted since the Ordovician, 488 million years ago. [3]Lingularia Biernat & Emig, 1993. the U. Lingula is a good example of a living fossil. Lingula, one of the oldest genera of brachiopods, has survived from the earliest Ordovician to the present day. Lingula anatina Lamarck, 1801 Lingula tumidula Reeve, 1841 Lingula parva Smith, 1871 Lingula adamsi Dall, 1873 Lingula reevei Davidson, 1880 Lingula translucida Dall, 1920 Lingula sp. There are only about 396 living species of Brachiopods (Catalogue of Life) known to science now. The shell is smooth, small, and Lingula could have existed in the Cambrian. Es hat sowohl das große Massenaussterben an der Perm-Trias-Grenze als auch das bekanntere an der Kreide-Tertiär-Grenze überlebt. (2000) hypothesized the Carboniferous separation of Glottidia and Lingula based on the fossil appearances of both baculate- and virgose-shelled lingulids: lingulids in the early Paleozoic possessed the former, whereas the earliest fossils of the latter date back to the Dinantian (=Visean + Tournaisian) (Cusack and Williams, 1996 Lingula is a genus of brachiopods in the class Lingulata. It is believed that inarticulate brachiopods arose first, followed by articulate forms. In the 1840's other linguliform brachiopods from the Palaeozoic were described. Visit our Virtual Exhibit on living fossils to learn more! Jul 28, 2021 · Lingula is often regarded as a “living fossil”, as brachiopods of pretty much the exact same morphology have existed since the Ordovician period. The phylum Brachiopoda, also known as lamp shells, is a group of bilaterally symmetrical, coelomate organisms that superficially resemble bivalve molluscs. Many other types of brachipods, like those shown above, are found in the Pennsylvanian rocks of Kentucky. anatina is a common brachiopod in the western Pacific region, a few studies were performed to investigate genetic variations of this species. The various species look very similar, and the genus is a good example of a living fossil. Y. of Seneca County, New York (PRI 76824). As a result, most of the Phanerozoic lingulids have been and are still referred to this genus by many researchers ( Xu and Grant, 1994 ). 4 Brachiopod PreservationAbove image: Kunstformen der Natur (1904), plate 97: Spirobranchia by Ernst Haeckel; source: Wikimedia Commons (Public Domain). On the other hand, articulate brachiopods have produced major diversifications, and suffered severe mass extinctions [ 55 ] —but the articulate Rhynchonellida and Terebratulida, the most diverse present-day The long pedicle facilitates burrowing; extant Lingula is typically found burrowed in soft muddy sediments with only the valve edges protruding Habitat( 1 ): Lives in vertical burrows in soft substrates, generally close to the shore Apr 25, 2021 · Simple Summary. Lingula’s unique anatomy and feeding habits have allowed them to thrive in various marine environments. More than 12,000 fossil species have been recognized, with the earliest undisputed brachiopod dating back to the Early Cambrian Period. Lingularia ex gr. On the inside surface of some, muscle scars These organisms had a bivalve mollusks, and also were sessile or free-floating. The internal organs are in the coelom, the lophophore in the mantle cavity. Bruguiere, Tableau encyclopédique et méthodique des trois règnes de la nature, I, 151a, pl. anatina, which was then studied by CUVIER (1802). anatina rather than well-based morphological differences. Aug 20, 2007 · Lingula is often considered to be one of the most ancient living fossils based on its morphological consistency tracing back to their Cambrian relatives. Download scientific diagram | Espécies de lingulídeos infaunais descritas e estampadas em Clarke (1913): A-Lingula scalprum; B-Lingula lepta; C-Lingula keideli; D-Lingula subpunctata; E-Lingula Mar 18, 2014 · Lingula. Some types of Lingula can still be found living today and for this reason are known as living fossils. It A modern genus, Lingula, is found in normal marine environments but is most common in muddy, brackish water that is poor in oxygen and generally unsuited to most organisms. Brachiopods are easily distinguished from molluscs Lingula is a genus of brachiopods in the class Lingulata. Composita is abundant and widespread as a fossil, especially in Permian deposits. It is known from the Middle Cambrian Burgess Shale (Canada) to the Upper Ordovician Bromide Formation (United States) in North America. Lingula facts. Their paper, published in Nature Communications, presents the results of their analysis of over 34,000 genes comprising the L. The similarity of the shell form of the extant Lingula and these fossils led Darwin in 1859 to create the description "living fossil" in his book "On the Origin of Species". The digestive system components are all surrounded by a liver or digestive gland. Taxonomy: Class: Lingulata Order: Lingulida Family: Lingulidae Mode of Life or Habitat: It lived in vertical burrows in intertidal areas and fed on detritus. Overview With very few living representatives, brachiopod classification has primarily come The inarticulate Lingula is often called a "living fossil", as very similar genera have been found all the way back to the Ordovician. 1 Brachiopod Classification ← –– 1. Most modern branchiopods anchor by the pedicle to pebbles, to the undersides of stones, or to other hard objects. 10A, D, E). Thereafter, this Darwinian concept became traditional in that Lingula was considered to lack morphological evolutionary changes. The genus Lingulella is a fossil form known from the Cambrian and was similar in appearance and structure to the modern Lingula. m Reproduced with the permission of Glasgow City Council, Glasgow Museums Keywords: Pasin and Ettensohn, (1995) inferred that while the species, Lingula melie, may have attached to floating plants, another species, Lingula meeki, is found in Late Devonian marine gray shales not attached to, or with fossil plant debris. Composita is an extinct brachiopod genus that lived from the Late Devonian to the Late Permian. Jun 1, 2017 · In the databank World Registered Marine Species (WoRMS), there are seven different registered species that belong to the genus Lingula, whereas BrachNet has eight morphologically identified Lingula species. Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Description. Many species of Atrypa have been described. Lingula dregeri Andreae, 1893. Infaunal. Craniformea contains only one class, Craniata, which contains the orders Craniida, Craniposida, and Trimerilida. Brachiopods are superficially similar to bivalves, both having two shells. Genus Lingula Class Articulata Genus Atrypa Genus Composita Genus Juresania* Genus Leptaena Genus Mucrospirifer Genus Platystrophia Genus Ranesquina Order Rhynchonellida MOLLUSKS (Phylum Mollusca) Class Bivalvia (clams, oysters, mussels) Genus Exogyra Genus Gryphaea Genus Pecten Genus Glycymeris Genus Astarte Genus Nucula Class Cephalopoda El género Lingula (Bruguiere, 1797) es el género animal más antiguo conocido que todavía contiene especies existentes. Growth lines form perpendicular to the costae and are spaced approximately 2 to 3 times further apart than the costae. The geographic population patterns of Lingula anatina across the Indo-West Pacific region are analyzed based on mitochondrial COI and nuclear EF-1α gene sequences. The first similar fossils date from the Permian period, 270 million years ago. 5 A–B) in combination with a higher organic content and Jan 5, 2023 · The modern Lingula brachiopod looks just like the Pennsylvanian Lingula fossils (like the one above) found in Kentucky. In 1812 the first fossil lingulids were discovered in the Mesozoic and Palaeozoic strata of the U Fun facts. Apr 24, 2023 · (A–F) Hand specimens and trace fossils indicating the lifestyle of the Linguloidea: (A) epibenthic Neobolus wulongqingensis from the Cambrian Stage 4, Wulongqing formation, (B and C) infaunal Pseudolingula quadrata from the Middle Ordovician, and (D–F) infaunal modern Lingula anatine; anterior view of the infaunal Lingula Anatina showing Living fossil. However there are over 30,000 fossil species known, showing that they were once a much more successful phylum than they are today. The genus Lingula was created in 1791 (not 1797) by BRUGUIÈRE and in 1801 LAMARCK named the first species L. The genus is easily recognized by Darwin coined the term “living fossil” for those forms that have evolved very little over hundreds of millions of years. - 2023 _____ Fossils _____ ? Lingula tenuis Sowerby. Lingula is a genus of brachiopods in the class Lingulata. Additional Information Lingula lässt sich fossil schon im Silur vor 400 Millionen Jahren nachweisen und ist damit eine der erdgeschichtlich ältesten, heute noch lebenden Gattungen und gilt als lebendes Fossil. srjqkcuwfhskkdzyftbrfnujrcxozsydqgdkejxnzdmpgtrcmozylutsqpbijvmrifmt