Anadara

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Anadara
Anadara antiquata

Anadara antiquata

Systematics
Subclass : Autolamellibranchiata
Subclass : Pteriomorphia
Order : Arcida
Superfamily : Arcoidea
Family : Ark clams (Arcidae)
Genre : Anadara
Scientific name
Anadara
Gray , 1847

Anadara is a shell - genus from the family of ark shells (Arcidae).

features

The housings, which are equally or evenly different, are very bulbous, often almost on the same side, are large to medium-sized and have a rather rounded, oblique-egg-shaped, roughly square or roughly trapezoidal shape. The strong, forward-curved vertebrae sit almost in the middle of the housing in relation to the length, or are only slightly shifted to the front end, i.e. H. the rear part of the housing is only slightly extended. In the rear part of the housing there can be a keel running from the vertebra to the transition from the rear edge to the ventral edge. The lock plate is almost straight to only very slightly curved. It has numerous, short, vertical to slightly outwardly diverging, almost identical teeth. The ligament lies in front of and behind the vertebrae. They don't have a constantly gaping opening for the byssus .

The shell is very thick and the cases are quite heavy according to their size. The ornamentation consists of strong radial ribs. The ventral margin is correspondingly strongly notched. The periostracum flakes off easily.

Geographical distribution and habitat

The representatives of the genus Anadara live freely in soft soils or attached with byssus threads to shell fragments , stones, etc. in tropical and subtropical seas.

Taxonomy

The genus was established in 1847 by John Edward Gray . It is the type genus of the subfamily Anadarinae Reinhart, 1935, which, however, is used by only a few authors. MolluscaBase does not use the subfamily structure of the ark shells. The type species of the genus Anadara Gray, 1847 is Arca antiquata Linnaeus, 1758. The following species are currently included in the genus Anadara :

Five subgenera are accepted by some authors: Anadara (Anadara) Gray, 1847, Anadara (Cunearca) Dall, 1898, Anadara (Diluvarca) Woodring, 1925, Anadara (Scapharca) Gray, 1847, and Anadara (Tosarca) Noda, 1965. Other aurors regard the four sub-genera as synonyms. Other synonyms are: Caloosarca Olsson, 1961, Cara Gray, 1857, Cunearca Dall, 1898, Esmerarca Olsson, 1961, Imparilarca Iredale, 1929, † Kikaiarca Noda, 1966, Potiarca Iredale, 1939, Rasia Gray, 1857, Scapharcopsis Nordsieck, 1969 and Sectiarca Olsson, 1961.

supporting documents

literature

  • Eugene V. Coan, Paul Valentich-Scott: Bivalve Seashells of Tropical West America marine Bivalve mollusks from Baja california to Northern Perú. Part 1,598 pp., Santa Barbara Museum of Natural History, Santa Barbara 2012 ISBN 978-0-936494-43-2 (p. 169)
  • Markus Huber: Compendium of Bivalves. Volume 1. 901 S., ConchBooks, Hackenheim 2010
  • Norman D. Newell: Anadara Gray, 1847. In: Raymond Cecil Moore (Ed.): Treatise on invertebrate paleontology. Mollusca, 6, Bivalvia 1. XXXVIII, S.N254, New York, 1969.

Individual evidence

  1. ^ 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. 198)
  2. ↑ a b c d MolluscaBase: Anadara Gray, 1847
  3. ↑ Fossilworks: Anadara Gray 1847 (ark)
  4. ↑ a b c List of trade names for fishery and aquaculture products, taking into account the current Federal Gazette announcements of: a) 83rd amendment to the announcement on trade names from November 15, 2016 b) 94th definition of provisional trade names from March 1 2017 PDF  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Toter Link / www.fischinfo.de  
  5. ^ Theodor CH Cole: Dictionary of Invertebrates / Dictionary of Invertebrates: Latin-German-English. Springer Spektrum, Berlin 2017, ISBN 978-3-662-52869-3 , p. 46. Preview on Google Books

Web links

Commons : Anadara  - collection of images, videos and audio files