[BPT05-P04] New species of the Jurassic to Cretaceous seep-restricted bivalve Caspiconcha from Japan, Spain and New Zealand
Keywords:Bivalve, Cold-seep, Taxonomy
We report four new species of the Mesozoic methane seep-restricted bivalve genus Caspiconcha. One is from the late Albian of northern Spain. Two new species are from the late Albian of Yubari City, Hokkaido, and from the Campanian of Nakagawa Town, Hokkaido, respectively. The other is from the late Albian to mid-Cenomanian of New Zealand. The oldest confirmed record of the genus is known from the latest Jurassic, it reached its maximum diversity in the Albian, and declined in diversity and abundance through the Late Cretaceous.