The lobster Linuparus preserved as an attachment scar on the oyster
Exogyra costata, Ripley formation (Late Cretaceous), Union County, Mississippi.
Observaciones.--Segun, Coan & Valentich-Scott 2014 esta especie ha sido confundido con la especie intermareal Chama
exogyra Conrad, 1837, pero C.
The invertebrate macrofauna is of moderate diversity, with a dominance of pectinid (Neithea) and gryphaeid bivalves (
Exogyra and Ceratostreon), and moulds of heterodontid bivalves tentatively assigned to Anisocardia, Protocardia, Fimbria, and Proveniella.
The ecology of Mesozoic Gryphaea,
Exogyra, and Ilymatogyra (Bivalvia: Mollusca) in a modern ocean.
Faunal elements within this stratigraphic interval (upper part) include abundant
Exogyra cancellata, a large oyster with a distinctly cancellated shell (Adkins, 1978).
Small (Protocardia striatula) Protocardia dyonisea protocardiids Fursich and Werner (1986) Region Lusitanian Basin (Portugal) Age Kimmeridgian Faunal community Mesosacella dammarensis--Corbulomima suprajurensis--association Free-reclining (
Exogyra sp.) oysters Semi-infaunal Inoperna perplicata mud-stickers Small corbulids Corbulomima suprajurensis Small astartids Nicaniella sp.
275) record the presence of abundant
Exogyra in these sediments, while Callapez (1998) records an ammonite fauna that contains Vascoceras gamai and Euomphaloceras septemseriatum that indicate an equivalence with the Western European zone of Metoicoceras geslinianum.