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Cassidella
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Caucasinidae
Subfamily:
Fursenkoininae
Formal Genus Name and Reference:
Cassidella HOFKER, 1951, *928c, p. 264
Type Species:
Virgulina tegulata Reuss, 1846, *1538, p. 40, OD
Images
(Click to enlarge in a new window)
Fig. 600,5-7. *C. tegulata (Rfuss), U.Cret., USA (Ark.) (5), Neth. (6,7); 5a,b, side, apert. views, X93 (*2117); 6, final chamber dissected to show tooth plate, X103 (*928c); 7, diagram showing tooth plate in relation to penultimate foramen below and at right, aperture in foreground, X103 (*928c).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, narrow, elongate, triserial in early stage, later biserial, very slightly twisted, chambers broad, low, sutures distinct, depressed, wall calcareous, finely perforate, granular in structure, surface smooth, aperture a long narrow slit, extending up face from base of final chamber, tooth plate simple, with folded or U-shaped section, arising at upper border of penultimate foramen, extending along basal wall of chamber to aperture where it becomes attached along lower apertural border.
References
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Cassidulinacea
Family:
Caucasinidae
Subfamily:
Fursenkoininae
Formal Genus Name and Reference:
Cassidella HOFKER, 1951, *928c, p. 264
Type Species:
Virgulina tegulata Reuss, 1846, *1538, p. 40, OD
Images
(Click to enlarge in a new window)
Fig. 600,5-7. *C. tegulata (Rfuss), U.Cret., USA (Ark.) (5), Neth. (6,7); 5a,b, side, apert. views, X93 (*2117); 6, final chamber dissected to show tooth plate, X103 (*928c); 7, diagram showing tooth plate in relation to penultimate foramen below and at right, aperture in foreground, X103 (*928c).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.
Beginning International Stage:
Cenomanian
Fraction Up In Beginning Stage:
0
Beginning Date:
100.5
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Test free, narrow, elongate, triserial in early stage, later biserial, very slightly twisted, chambers broad, low, sutures distinct, depressed, wall calcareous, finely perforate, granular in structure, surface smooth, aperture a long narrow slit, extending up face from base of final chamber, tooth plate simple, with folded or U-shaped section, arising at upper border of penultimate foramen, extending along basal wall of chamber to aperture where it becomes attached along lower apertural border.