A new genus and two new species of Thyasiridae are described from deep-water chemosynthetic communities in the Atlantic Ocean. Spinaxinus sentosus n. gen., n. sp. is distinguished by both shell shape and periostracal characters and bears little resemblance

The Thyasiridae is the most species-rich family of bivalves in the abyssal and hadal zones of the northwestern Pacific Ocean. In recent years, with at least 14 thyasirid species found in that region at depths exceeding 3,000 m. Some of them are the

The Thyasiridae is one of the species-richest families in the abyssal and hadal zones of the northwestern Pacific Ocean. Many thyasirid species dominate benthic communities in terms of abundance and play an important role in the functioning of deep-sea

A new thyasirid bivalve, Thyasira inadai n. sp., is described from the Japan Sea. This species lives in the Japan Sea and Yellow Sea and can be separated from the relatively shallower-water dwelling T. tokunagai Kuroda & Habe, 1951 by having a larger

Thyasiridae are one of the less studied groups of chemosymbiotic bivalves. Here, we investigated symbioses in three different thyasirid species collected at three cold seeps from the Atlantic and Mediterranean. Phylogenetic analysis of bacterial 16S