Tongue clams
| Tongue clams | ||||||||||||
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Ox heart ( Glossus humanus ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Glossidae | ||||||||||||
| Gray , 1847 |
The tongue clams (Glossidae) are a very small family of clams . The oldest representatives of the tongue clams come from the Aptium (Lower Cretaceous).
features
The comparatively large housings with the same flaps are spherical in overall shape and heart-shaped in cross-section. It is unequal, the vertebrae sit in front of the midline (closer to the front end). The vertebrae are strongly curled and inflated forward.
The heterodontic lock has two to three elongated cardinal teeth and a posterior lateral tooth, occasionally rudimentary anterior lateral teeth are also present. The ligament is located externally behind the vertebrae and sits on nymphs .
The aragonitic shell is generally very thick-walled and stable, but it can also be thin-walled. The outer shell layer is homogeneous or consists of cross lamellas, the inner layer is complex-cross lamellar. The two sphincters are approximately the same size. The surface line is without a bay. There are no siphons . The foot is hatchet and has a byssus .
Geographical distribution, habitat and way of life
The family is spread around the world. The few species in the family live shallowly buried in muddy soil.
Taxonomy
The taxon was established in 1847 by John Edward Gray . MolluscaBase treats the taxon as a valid family and superfamily.
- Clam family (Glossidae)
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Glossus Poli, 1795
- Ox heart ( Glossus humanus (Linnaeus, 1758))
- Meiocardia H. Adams & A. Adams, 1857
- Miocardiopsis Glibert, 1936
- ? Blagraveia Cox, 1933.
- ? Rakhia Eames, 1951
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Glossus Poli, 1795
The two genera Blagraveia and Rakhia , which the Treatise on Invertebrate Paleontology posed with question marks about the Glossidae family , were classified in the Veneridae family by Eames (1951) . Shaak (1980) followed the authors of Treatise and incorporated Blagraveia under the Glossidae. Rakhia has apparently not been described since 1969 (Treatise).
supporting documents
literature
- Michael Amler, Rudolf Fischer & Nicole Rogalla: Mussels. Haeckel library, Volume 5. Enke Verlag, Stuttgart 2000, ISBN 3-13-118391-8 . (P. 111)
- S. Peter Dance, Rudo von Cosel (arrangement of the German edition): The great book of sea shells. 304 p., Verlag Eugen Ulmer, Stuttgart, 1977 ISBN 3-8001-7000-0 (p. 263)
- Stefano Dominici, Elisabetta Cioppi, Silvia Danise, Ubaldo Betocchi, Gianni Gallai, Francesca Tangocci, Gigliola Valleri, Simonetta Monech: Mediterranean fossil whale falls and the adaptation of mollusks to extreme habitats. Geology, 37 (9): 815–818, 2009, doi : 10.1130 / G30073A.1 or PDF (at ResearchGate)
- Rudolf Kilias: Lexicon marine mussels and snails. 2nd edition, 340 p., Verlag Eugen Ulmer, Stuttgart 1997, ISBN 3-8001-7332-8 (p. 132)
- Raymond Cecil Moore (Ed.): Treatise on invertebrate paleontology. Mollusca, 6, Part N, Bivalvia 2. XXXVIII S., pp. 491-951, New York, 1969 (pp. 657/8).
- Fritz Nordsieck : The European sea shells (Bivalvia). From the Arctic Ocean to Cape Verde, the Mediterranean Sea and the Black Sea. 256 p., Gustav Fischer Verlag, Stuttgart 1969 (p. 75)
- Guido Poppe and Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 p., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 119)
Individual evidence
- ↑ Yasuo Kondo, Shin-ichi Sano: Origination of extant heteroconch families: Ecological and environmental patterns in post-Paleozoic bivalve diversification. Palaeontological Research, 13: 39-44, Tokyo 2009 doi : 10.2517 / 1342-8144-13.1.039
- ^ John Edward Gray: A list of genera of Recent Mollusca, their synonyma and types. Proceedings of the Zoological Society of London, 15: 129–219, London 1847 Online at www.biodiversitylibrary.org (p. 195)
- ↑ MolluscaBase: Glossidae JE Gray, 1847 (1840)
- ^ AA Berezovsky: The representatives of the genus Miocardiopsis (Bivalvia) in the Middle Eocene of the Kryvyi Rih basin. Geologo - mineralogičnij visnik, 2007: 12-19, 2007 (In Ukrainian) PDF ( Memento of the original from April 26, 2016 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ^ Frank E. Eames, A Contribution to the Study of the Eocene in Western Pakistan and Western India B. The Description of the Lamellibranchia from Standard Sections in the Rakhi Nala and Zinda Pir Areas of the Western Punjab and in the Kohat District. Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, 235 (627): 311-482, 1951, JSTOR 92425 .
- ^ Graig D. Shaak: Catalog of Type Invertebrate Fossils at the Florida Bureau of Geology. State of Florida, Department of Natural Resources, Division of Interior Resources, Bureau of Geology, Special Publication, 24: Tallahassee, 1980 PDF
