Arcida
| Arcida | ||||||||||||
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Anadara |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Arcida | ||||||||||||
| Stoliczka , 1871 |
The Arcida (in older publications also Arcoida ) are an order of the mussels (Bivalvia), which belongs to the infraclass Pteriomorphia within the Autolamellibranchiata . It is a group of mussels found exclusively in the sea. The oldest Arcida are already known from the Lower Ordovician .
features
The cases of the Arcida are often egg-shaped and equilateral, more rarely aberrant . The shell is exclusively aragonitic with predominantly cross-lamellar and prismatic microstructures. The lock bar is varied and can also be reduced. The lock itself toothless or taxodont , or other types of teeth occur. The sphincters are uniform or only slightly irregular. The foot is usually large and strong.
Geographical distribution, habitat and way of life
The Arcida are exclusively marine mussels that are mostly attached to the substrate with the help of organic byssus . They usually live on or only half buried in the sediment.
Taxonomy
According to MolluscaBase, the Arcida contain three superfamilies:
- Superfamily Arcoidea Lamarck, 1809
- Family ark mussels (Arcidae Lamarck, 1809)
- Family Catamarcaiidae Cope, 2000 †
- Stewart family Cucullaeidae , 1930
- Family Frejidae Ratter & Cope, 1998 †
- Family Glycymerididae Dall, 1908 (1847)
- Family Noetiidae Stewart, 1930
- Family Parallelodontidae Dall, 1898
- Superfamily Glyptarcoidea Cope, 1996 †
- Glyptarcidae Cope family , 1996 †
- Family Pucamyidae Sánchez & Benedetto, 2007 †
- Superfamily Limopsoidea Dall, 1895
- Family Limopsidae Dall, 1895
- Family Philobryidae F. Bernard, 1897
supporting documents
literature
- Michael Amler, Rudolf Fischer & Nicole Rogalla: Mussels . Haeckel library, volume 5. Enke Verlag, Stuttgart 2000 ISBN 3-13-118391-8 .
- Rüdiger Bieler & Paula M. Mikkelsen: Bivalvia - a look at the branches . Zoological Journal of the Linnean Society, 148: 223-235, London 2006.