Ostrea sp. B

Musavu Moussavou, Benjamin, 2017, Systematics, palaeoecology and taphonomy of Turonian oysters from the northern Gabon Coastal Basin, Geodiversitas 39 (2), pp. 213-224 : 220

publication ID

https://doi.org/ 10.5252/g2017n2a3

publication LSID

lsid:zoobank.org:pub:F4D33955-5823-49E9-BC9A-26DFB03038A7

DOI

https://doi.org/10.5281/zenodo.4536473

persistent identifier

https://treatment.plazi.org/id/03A9D86F-FA7C-FFDF-3EA9-90775C7495E0

treatment provided by

Plazi

scientific name

Ostrea sp. B
status

 

Ostrea sp. B

( Fig. 4 View FIG O-R)

MATERIAL. — 81 specimens (MDG/LBV/Lm-31.1 to Lm-31.81).

OCCURRENCE. — Turonian of Gabon (this study).

Shell is medium to large, inequivalve, inequilateral, elongated, suborbicular to elliptical shape in outline. LV slightly inflated and RV flat. Umbo is small and opisthogyrate. Ligamental area is narrow and small. Anterior margin is curved. Posterior margin is straight or curved. Ventral margin is evenly rounded. Attachment area is medium, depressed occupies the posterodorsal portion of the LV.Its ornamentation consists of numerous radial ribs which are crossing by concentric growth lamellae at irregular intervals. Ribs start at the umbonal area, occasionally carrying small spines near ventral margin. RV ornamented by concentric fine growth squamae.

REMARKS

Ostrea tunetana Munier-Chalmas, 1881 shows some similarity with our material but differs in having longer and more pointed umbo and straight ligamental area.

Kingdom

Animalia

Phylum

Mollusca

Class

Bivalvia

Order

Ostreoida

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