Protocardia, Beyrich, 1845

Moussavou, Benjamin Musavu, 2015, Bivalves (Mollusca) from the Coniacian-Santonian Anguille Formation from Cap Esterias, Northern Gabon, with notes on paleoecology and paleobiogeography, Geodiversitas 37 (3), pp. 315-324 : 318-319

7. Protocardia ? sp.

( Fig. 4E )

DESCRIPTION

Shell medium, equival, inequilateral, diamond-shaped in outline; umbo prosogyrate, valves inflated; anterior margin more rostrate than posterior margin; no ornament preserved.

Familly LIMIDAE Rafinesque, 1815

8. Plagiostoma pseudohoernesi ( Riedel, 1932) ( Fig. 4N )

DESCRIPTION

Shell large, subequivale, suborbicular in outline; umbo prominent; valves slightly inflated; outer surface with ten ribs (five in each part) anterior and posterior margins straight, rounded into ventral margin.

Familly VENERIDAE Rafinesque, 1815

Figures

FIG. 4. — A, Q, Granocardium? sp. 2; B, Acanthocardia cf. denticulata (Baily, 1855); C, Granocardium productum (Sowerby, 1832); D, Granocardium sp. 1; E, Protocardia? sp.; F, H, L, P, Agelasina plenodonta Riedel, 1932; G, J, Protocardia cf. pauli (Coquand, 1862); I, Aphrodina dutrugei (Coquand, 1862); K, Atrina laticostata (Stoliczka,1871); M, Anofia? sp.; N, Plagiostoma pseudohoernesi (Riedel,1932); O, Aphrodina gabonensis Dartevelle & Freneix,1957.Scale bar:2 cm.