Open AccessCentrichnus, new ichnogenus for centrically pattemed attachment scars on skeletal substrates
Author(s) -
Richard G. Bromley,
J. Martinell
Publication year - 1991
Publication title -
bulletin of the geological society of denmark
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.674
H-Index - 28
eISSN - 2245-7070
pISSN - 0011-6297
DOI - 10.37570/bgsd-1990-38-21
Subject(s) - byssus , scars , substrate (aquarium) , geology , paleontology , trace fossil , mytilus , oceanography , medicine , surgery
Two characteristic and common trace fossils, lightly etched into the surfaces of skeletal substrates in marine environments, are named Centrichnus eccentricus igen. et isp. nov., and C. concentricus isp. nov. respectively. Tue first is new, not having been described in recent or fossil material before. It corresponds to the attachment scars produced by anomiid bivalves where they anchor their unique calcified byssus to the substrate. C. concentricus, on the other hand, is well known but hitherto has not been named. It corresponds to the etching scars produced beneath verrucid cirripedes on calcareous substrates.