Abstract
A NEW SPECIES OF RETISPIRA KNIGHT (GASTROPODA, BELLEROPHONTOIDEA) FROM THE LOWER PERMIAN OF CHUBUT PROVINCE, ARGENTINA. A new species of Retispira Knight (Gastropoda, Bellerophontoidea) from the lower Permian of the Tepuel-Genoa Basin, Chubut Province, Argentina, is described. The specimens come from the Cisuralian Euphemites chubutensis - Palaeoneilo aff. concentrica Zone. Retispira patagoniensis sp. nov. is a small, subglobose, phaneronphalus bellerophontid characterized by having a broad selenizone with fine lunulae and spiral lirae. Spiral and colabral elements generate a reticulate pattern. The new species developed in both shallow marine and deltaic facies and its distribution was mainly affected by water turbidity, depth and temperature. Its feeding habit may have been herbivorous, probably as an algal foliage dweller.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.