Sand shells

from Wikipedia, the free encyclopedia
Sand shells
Sanguinolaria tellinoides

Sanguinolaria tellinoides

Systematics
Subclass : Heterodonta
Euheterodonta
Superordinate : Imparidentia
Order : Cardiida
Superfamily : Tellinoidea
Family : Sand shells
Scientific name
Psammobiidae
Fleming , 1828

The sand clams (Psammobiidae) are a family of clams from the order Cardiida . The oldest members of the family come from the Danium ( Palaeogene ).

features

The moderately bulbous to narrow, slightly unequal to equal-valve, small to large cases are elongated-ovoid, elongated-elliptical, elongated-rhomboidal or elongated-triangular in outline. They are unequal, the vertebrae are usually located well in front of the center line in relation to the length of the case, and more rarely behind the center line. The bodies of most species have a slight gap at the rear and occasionally at the front. Occasionally a keel is formed at the rear end. The lock has one to three main teeth in each flap, side teeth are missing or are only very weakly developed. The jacket bay is deep to shallow and falls z. T. together with the surface line. The byssus gland is reduced early.

The shells are usually thin-walled, but firm. The ornamentation usually consists of concentric growth strips and fine lines, but also of radial elements; there are also almost completely smooth shapes.

Geographical distribution and habitat

The family is common in all seas around the world, but the focus of diversity is in the warmer seas. Only one species occurs in the southern North Sea.

Taxonomy

The family group taxon was proposed by John Fleming in 1828 . More recent synonyms are: Asaphidae Winckworth, 1932, Garidae Stoliczka, 1870 and Sanguinolariidae M. Smith, 1937. The MolluscaBase currently (2016) provides the following genera to the family Psammobiidae:

The type genus of the family Psammobiidae, the genus Psammobia Lamarck, 1818 is a more recent synonym by Gari Schumacher, 1817.

supporting documents

literature

  • 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. 261)
  • Markus Huber: Compendium of Bivalves. A full-color guide to 3,300 of the world's marine bivalves. A status on Bivalvia after 250 years of research. 901 p., 1 CD-ROM, Hackenheim, ConchBooks, 2010 (p. 694)
  • Rudolf Kilias: Lexicon marine mussels and snails. 2nd edition, 340 p., Verlag Eugen Ulmer, Stuttgart 1997 ISBN 3-8001-7332-8 (p. 260)
  • Raymond Cecil Moore (Ed.): Treatise on invertebrate paleontology. Part N. Mollusca, 6, Bivalvia 2. XXXVIII, S.N490-N951., New York, 1969 (S.N629).
  • Guido Poppe and Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 pp., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 114)

Individual evidence

  1. ↑ Yasuo Kondo and 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
  2. ↑ John Fleming: A history of British animals, exhibiting the descriptive characters and systematic arrangement of the genera and species of quadrupeds, birds, reptiles, fishes, Mollusca, and Radiata of the United Kingdom; including the indigenous, extirpated, and extinct kinds, together with periodical and occasional visitants. Pp. I-XXXII, 1-565, Edinburgh, Bell & Bradfute, 1828 Online at www.biodiversitylibrary.org (p. 437).
  3. ↑ a b MolluscaBase: Psammobiidae Fleming, 1828

Web links

Commons : Sand Clams (Psammobiidae)  - Collection of images, videos and audio files