Cenozoic pedunculate barnacles (Cirripedia: Thoracica) deposited in the Mizunami Fossil Museum, Japan

Abstract

Cenozoic pedunculate barnacles (Cirripedia, Thoracica) deposited in the paleontological collection of the Mizunami Fossil Museum, Japan, are clarified. Two new species of the scalpellid genus Arcoscalpellum Hoek are described: Arcoscalpellum s.l. isaonishikawai from the Miocene Bihoku Group and Arcoscalpellum s.l. joei from the Miocene Yotsuyaku Formation. Lepas azuminoensis Kawase, Koike, and Tanaka is moved to another lepadid genus, Dosima Gray. Smilium scorpio (Aurivillius) (Calanticidae), Lepas pectinata Spengler (Lepadidae), and Octolasmis orthogonia (Darwin) (Poecilasmatidae) from the Pleistocene of Japan are first reported in the fossil records. The new records of fossil pedunculate barnacles are as follows: Calantica sp. (Calanticidae) from the Pleistocene Ryukyu Group; Lepas sp. from the Miocene Katsuta Group; Oxynaspis sp. (Oxynaspididae) from the Pleistocene Atsumi and Shimosa Groups; and Capitulum sp. (Pollicipidae) from the Miocene Mizunami Group.