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Fromea amphora
Fromea amphora Cookson and Eisenack, 1958
Tax. sr. synonym of Fromea warlinghamensis Gitmez and Sarjeant, 1972, according to Riley, 1979. Jansonius, 1989, retained Fromea warlinghamensis as a separate species.
Holotype:Cookson and Eisenack 1958, pl.5, fig.10
Locus typicus: Perth Basin, Western Australia
Stratum typicum: Albian-Cenomanian
Original descrpition: Cookson and Eisenack, 1958, p. 56
Shell ellipsoidal, flattened, concave in the apertural region; wall c. 3 Ám slightly thicker around the aperture. Equatorial "girdle" strongly indicated in the type, less so in other examples.
Supplemental description: Davey, 1969, p. 140
The shell is ovoidal, thick-walled (2-3 Ám) and typically possesses an apical archaepoyle with a rounded margin. In one specimen (Pl.3, fig.3) the apical region is still attached and may be seen to be perfectly rounded. A cingulum was not observed in any of the specimens.
Tax. sr. synonym of Fromea warlinghamensis Gitmez and Sarjeant, 1972, according to Riley, 1979. Jansonius, 1989, retained Fromea warlinghamensis as a separate species.
Holotype:Cookson and Eisenack 1958, pl.5, fig.10
Locus typicus: Perth Basin, Western Australia
Stratum typicum: Albian-Cenomanian
Original descrpition: Cookson and Eisenack, 1958, p. 56
Shell ellipsoidal, flattened, concave in the apertural region; wall c. 3 Ám slightly thicker around the aperture. Equatorial "girdle" strongly indicated in the type, less so in other examples.
Supplemental description: Davey, 1969, p. 140
The shell is ovoidal, thick-walled (2-3 Ám) and typically possesses an apical archaepoyle with a rounded margin. In one specimen (Pl.3, fig.3) the apical region is still attached and may be seen to be perfectly rounded. A cingulum was not observed in any of the specimens.