Abstract
We describe a new species, Provanna urahoroensis sp. nov. from seep carbonates of the lower Oligocene Nuibetsu Formation in eastern Hokkaido, Japan. The new species is the second fossil record of Provanna from Paleogene rocks and resembles a smooth variant of the American Paleogene species, P. antiqua Squires, in having a smooth shell with very weak spiral cords. Based on its association with Bathymodiolus (s. l.), fossil Provanna including the new species possibly grazed preferably on bacteria on the surface of Bathymodiolus (s. l.) and of exposed carbonates.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
