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Laballa
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Suessioidea
Family:
Laballidae
Formal Genus Name and Reference:
Laballa MOISSEEV, 1962, p. 51
Type Species:
Spiriferina suessi WINKLER, 1859, p. 22, OD
Images
(Click to enlarge in a new window)
Fig. 1254, 3 a-j. * L. suessi (Winkler), Rhaetian, eastern Alps, a-b, dorsal and lateral views, × 1 (new), c-g, h-j, transverse sections of 2 specimens, × 2 (Dagys, 1963).
Synonyms
Geographic Distribution
Tethys, northeastern Siberia, New Zealand, New Caledonia
Age Range
Beginning Stage in Treatise Usage:
Upper Triassic
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Upper Triassic
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Medium size, outline subtrigonal to subpentagonal, strongly ventribiconvex, subpyramidal, ventral umbonal region elongated, beak straight or slightly incurved, ventral interarea high, flattened or slightly concave, weakly apsacline to catacline, delthyrum open, fold and sulcus moderately well developed, rounded, smooth, lateral slopes smooth or very gently folded, microornament of short spinules, ventral interior with very high, short median septum bisecting high, shallow, anteriorly free spondylium, dorsal interior with ctenophoridium and long, high, subparallel dorsal adminicula, jugum free, flattened, fimbriate
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Suessioidea
Family:
Laballidae
Formal Genus Name and Reference:
Laballa MOISSEEV, 1962, p. 51
Type Species:
Spiriferina suessi WINKLER, 1859, p. 22, OD
Images
(Click to enlarge in a new window)
Fig. 1254, 3 a-j. * L. suessi (Winkler), Rhaetian, eastern Alps, a-b, dorsal and lateral views, × 1 (new), c-g, h-j, transverse sections of 2 specimens, × 2 (Dagys, 1963).
Synonyms
Geographic Distribution
Tethys, northeastern Siberia, New Zealand, New Caledonia
Age Range
Beginning Stage in Treatise Usage:
Upper Triassic
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Upper Triassic
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Medium size, outline subtrigonal to subpentagonal, strongly ventribiconvex, subpyramidal, ventral umbonal region elongated, beak straight or slightly incurved, ventral interarea high, flattened or slightly concave, weakly apsacline to catacline, delthyrum open, fold and sulcus moderately well developed, rounded, smooth, lateral slopes smooth or very gently folded, microornament of short spinules, ventral interior with very high, short median septum bisecting high, shallow, anteriorly free spondylium, dorsal interior with ctenophoridium and long, high, subparallel dorsal adminicula, jugum free, flattened, fimbriate