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Bittersweet Clams

Glycymeris da Costa 1778

Glycymeris

provided by wikipedia EN

Glycymeris, common name the bittersweet clams, is a genus of saltwater clams, marine bivalve molluscs in the family Glycymerididae.

Etymology

The genus name comes from the Ancient Greek word glykymaris (perhaps from Glykys (sweet) and Meris (part)), a word which is only recorded once in Greek literature.

Fossil records

These clams are very common as fossils, from the Cretaceous period in the Valanginian age (between 140.2 ± 3.0 mya and 136.4 ± 2.0 mya). Fossil shells of these molluscs can be found all over the world. Genus Glycymeris includes about 100 extinct species.[1][2]

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Fossil valve of Glycymeris inflata from the Pliocene of Italy

Description

The shells are generally biconvex, with equal valves round in outline, and slightly longer than wide. Their size varies from medium to large. The external ligament lacks transverse striations. These clams are a facultatively mobile infaunal suspension feeders.

Habitat

They are widespread on shallow seabeds that consist of heterogeneous-grained sediments.

Species

Species within this genus include:[3]

Gallery

See also

References

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Glycymeris: Brief Summary

provided by wikipedia EN

Glycymeris, common name the bittersweet clams, is a genus of saltwater clams, marine bivalve molluscs in the family Glycymerididae.

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Habitat

provided by World Register of Marine Species
Known from seamounts and knolls
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bibliographic citation
Vaught, K.C.; Tucker Abbott, R.; Boss, K.J. (1989). A classification of the living Mollusca. American Malacologists: Melbourne. ISBN 0-915826-22-4. XII, 195 pp. Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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