Tell clams

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Tell clams
Eurytellina lineata Turton, 1819

Eurytellina lineata Turton, 1819

Systematics
Subclass : Heterodonta
Euheterodonta
Superordinate : Imparidentia
Order : Cardiida
Superfamily : Tellinoidea
Family : Tell clams
Scientific name
Tellinidae
de Blainville , 1814
Tellina radiata Linnaeus, 1758, type species of the genus Tellina Linnaeus, 1758

The tell mussels (Tellinidae), also called flat mussels , are a very large family of mussels from the order Cardiida , which according to Markus Huber contains 550 species. The oldest members of the family come from the Valanginian ( Lower Cretaceous ).

features

The small to medium-sized, often somewhat unevenly folded and compressed (= flat) housings are approximately circular to elongated-elliptical or rounded-triangular in outline. The front end is usually rounded, the rear end is often elongated, e.g. Sometimes even beaked. The left flap is usually slightly more bulbous than the right flap or the housing is bent sideways to the right. The housings are almost equilateral to significantly unequal. The vertebrae are shifted towards the rear end. They are relatively small, mostly prosogyr, less often opisthogyr twisted. Often the cases on the posterior ventral side gape constantly.

The ligament is usually external or internal in a ligament pit. The lock plate is usually narrow with two cardinal teeth in each flap. They are usually of different sizes, the larger lateral tooth is often grooved in the middle and two-pointed. Lateral teeth can be present or absent. The posterior lateral teeth, if any, are further from the cardinal teeth than the anterior lateral teeth. There are two muscle impressions of about the same size, often slightly different in the right and left flaps. The mantle edge is indented very deeply, the mantle bay reaches the anterior sphincter muscle.

The aragonitic shell consists of an outer combined-prismatic layer, a middle one made of cross-lamellas and an inner complex-cross-lamellar or homogeneous layer. The surfaces are almost smooth or with fine concentric lines and pits, rarely very coarse ribs or ornamented with thorns ( Tellidora ). Often a furrow or a back runs from the vertebra to the lower rear corner of the case, often only on the right flap. Many shapes have strong colors (pinks, reds and yellows) and often ray patterns. The periostracum is usually very thin and translucent.

The mussel has two long, separate siphons . The foot is large and strong, and narrowed at the sides.

Geographical distribution, habitat and way of life

The family is spread around the world. However, the focus of diversity is in the temperate and warmer seas.

The tell mussels usually live more or less deeply buried in sandy, but also muddy and muddy-sandy soils. They are stuck on their side or vertically in the sediment and only stretch the siphons to the surface of the sediment. The siphons suck the sediment surface for food particles. Other types are filter feeders only.

The sediment surface is virtually pipetted off with the long inflow siphon. The housings are often not stuck vertically or horizontally in the sediment, but lie laterally on the left flap, the rear end, which is slightly bent to the right, points upwards.

To use the Tell mussels, the seabed is plowed through with net-like devices; In the net there are bigger and smaller mussels and crabs, but also stones or similar. The smaller ones should be given back into the sea. The larger ones can be prepared for consumption.

Taxonomy

The taxon was founded in 1814 by Henri Marie Ducrotay de Blainville as tellinacées . The taxon was also ascribed to de Blainville after the Latinization, so that de Blainville is considered the author of the taxon even according to today's nomenclature rules. The MolluscaBase accepts the taxon as valid.

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. 255)
  • Markus Huber: Compendium of bivalves 2. A full-color guide to the remaining seven families . 907 S., Hackenheim, ConchBooks 2015. ISBN 978-3-939767-63-3 (p. 705)
  • Rudolf Kilias: Lexicon marine mussels and snails. 2nd edition, 340 pp., Verlag Eugen Ulmer, Stuttgart 1997 ISBN 3-8001-7332-8 (p. 303)
  • Raymond Cecil Moore (Ed.): Treatise on invertebrate paleontology. Part N. Mollusca, 6, Bivalvia 2. XXXVIII, S.N490-N951., New York, 1969 (S.N613).
  • 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. 109)
  • Markus Huber: Compendium of Bivalves 2. A full-color guide to the remaining seven families. A systematic listing of 8,500 bivalve species and 10,500 synonyms. 907 S., Hackenheim, ConchBooks 2015, ISBN 978-3939767633 (pp. 564-746).

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. ↑ https://www.youtube.com/watch?v=8bnLFaEqSeA&pbjreload=10
  3. ^ Henri Marie Ducrotay de Blainville; Mémoire sur la classification méthodique des animaux mollusques, et établissement d # une nouvelle considération pour y parvenir. Bulletin des Sciences par la Société Philomatique de Paris, 1: 175-180, Paris 1814 Online at www.biodiversitylibrary.org (p. 179)
  4. ↑ MolluscaBase: Tellinidae Blainville, 1814
  5. ↑ Nomenclator Zoologicus: Sylvanus ( Memento of the original from April 28, 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. @1@ 2Template: Webachiv / IABot / uio.mbl.edu