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Abathomphalus
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Globotruncanidae
Formal Genus Name and Reference:
Abathomphalus Bolli, Loeblich & TAPPAN, 1957, *164, p. 43
Type Species:
Globotruncana mayaroensis BOLLI, 1951, *158, p. 198, OD
Images
(Click to enlarge in a new window)
Fig. 529,5. °A. mayaroensis (BOLLI), Trinidad; 5a-c, spiral, umbilical, and edge views, X76 (*164)
Synonyms
Geographic Distribution
W.Indies(Trinidad)-Mex.-Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test free, trochospiral, biconvex to concavo-convex, almost nonumbilicate, periphery with single or double keel, sutures depressed, curved, and in some forms beaded on spiral side, depressed and radial on umbilical side, wall calcareous, perforate, radial in structure, commonly ornamented with fine nodes, peripheral keels and sutures may be beaded, primary aperture interiomarginal, extraumbilical, generally covered by continuous umbilical tegillum of irregular outline, with accessory infralaminal apertures situated at suture contacts with tegillum.
References
$\qquad$ Loeblich, A. R., Jr., \& Tappan, Helen, 1957, Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae, and Globotruncanidae: U.S. Natl. Museum, Bull. 215, p. 3-50, pl. 1-11, text-fig. 1-9.
Museum or Author Information
Classification
Phylum:
Protista
Subphylum:
Sarcodina
Class:
Reticularea
Subclass:
Granuloreticulosia
Order:
Foraminiferida
Suborder:
Rotalina
Superfamily:
Globigerinacea
Family:
Globotruncanidae
Formal Genus Name and Reference:
Abathomphalus Bolli, Loeblich & TAPPAN, 1957, *164, p. 43
Type Species:
Globotruncana mayaroensis BOLLI, 1951, *158, p. 198, OD
Images
(Click to enlarge in a new window)
Fig. 529,5. °A. mayaroensis (BOLLI), Trinidad; 5a-c, spiral, umbilical, and edge views, X76 (*164)
Synonyms
Geographic Distribution
W.Indies(Trinidad)-Mex.-Eu.-Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Maastricht.)
Beginning International Stage:
Maastrichtian
Fraction Up In Beginning Stage:
0
Beginning Date:
72.17
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Test free, trochospiral, biconvex to concavo-convex, almost nonumbilicate, periphery with single or double keel, sutures depressed, curved, and in some forms beaded on spiral side, depressed and radial on umbilical side, wall calcareous, perforate, radial in structure, commonly ornamented with fine nodes, peripheral keels and sutures may be beaded, primary aperture interiomarginal, extraumbilical, generally covered by continuous umbilical tegillum of irregular outline, with accessory infralaminal apertures situated at suture contacts with tegillum.
References
$\qquad$ Loeblich, A. R., Jr., \& Tappan, Helen, 1957, Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae, and Globotruncanidae: U.S. Natl. Museum, Bull. 215, p. 3-50, pl. 1-11, text-fig. 1-9.