Buchia Rouillier, 1845

Hryniewicz, Krzysztof, Little, Crispin T. S. & Nakrem, Hans Arne, 2014, Bivalves from the latest Jurassic-earliest Cretaceous hydrocarbon seep carbonates from central Spitsbergen, Svalbard, Zootaxa 3859 (1), pp. 1-66 : 22-23

Genus Buchia Rouillier, 1845

Type species. Avicula mosquensis von Buch, 1844

Buchia spp.

2011 Buchia sp. —Hammer et al., fig. 7i, tab. 2.

Material examined. 156 specimens. See Appendix 1 for the list of specimens.

Remarks. Species of the genus Buchia are considered valuable index fossils in Oxfordian to Hauterivian strata and are used for biostratigraphic subdivisions (e.g. Jeletzky 1966; Kauffman 1973; Zakharov 1981; Surlyk & Zakharov 1982). The Svalbard seep buchiids probably represent Buchia okensis (Pavlow, 1907) , Buchia volgensis ( Lahusen, 1888) and Buchia cf. inflata ( Lahusen, 1888) . A separate paper is planned to formally describe them, and their stratigraphic significance in relation to the ammonite stratigraphy of Wierzbowski et al. (2011).

Palaeoecology. Buchia species were epifaunal byssally attached suspension-feeders (e.g. Wignall & Pickering 1993, fig. 7), often clustering around hard structures (e.g. shells, rocks) providing a substrate for byssal attachment ( Fürsich 1982). The species of the genus had a broad ecological tolerance and were present in a variety of shallow to deep marine facies (e.g. Sokolov & Bodylevsky 1931; Håkansson et al. 1981; Fürsich 1982; 1984; Oschmann 1988; Kelly 1984; Wignall & Pickering 1993) and are suggested to have been opportunists ( Fürsich 1984; Wignall 1990).