Glycymeris yessoensis
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| Glycymeris yessoensis | |
|---|---|
 | |
| Interior and exterior of shell | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Arcida |
| Family: | Glycymerididae |
| Genus: | Glycymeris |
| Species: | G. yessoensis |
| Binomial name | |
| Glycymeris yessoensis (Sowerby III, 1889)[1] | |
Glycymeris yessoensis is a species of bivalve mollusc in the family Glycymerididae. It can be found burrowing in soft sediment in shallow water in the Pacific Ocean around the coasts of China and Japan.[1] It is often associated with a polychaete worm with which it forms a commensal relationship.
This species was first described by the British malacologist George Brettingham Sowerby III in 1889 (or 1888). It has a long fossil record, having been found in formations in southwestern Sakhalin dating back to the lower middle Miocene, with numerous occurrences in the Neogene and Quaternary periods in northern Japan. In the fossils it is possible to observe changing patterns of drilling predation over the aeons, with the sites of drill holes varying with time, perhaps due to a change in the principle predators, from Glossaulax to Cryptonatica.[2] Almost unispecific beds of fossils of Glycymeris yessoensis are found in the Onma Formation in central Japan.[3]