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Lacunosella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Pugnacoidea
Family:
Basiliolidae
Formal Genus Name and Reference:
Lacunosella WISNIEWSKA, 1932, p. 30
Type Species:
Rhynchonella arolica Oppel in Oppel & WAAGEN, 1866, p. 294, OD
Images
(Click to enlarge in a new window)
Fig. 823, 2p–z. L. (L.) kolhidaensis (MOISEEV), Barremian, Caucasus, Georgia; p–s, holotype, dorsal, lateral, anterior, ventral views, approximately ×1 (Moiseev, 1939); t–z, transverse serial sections, distances in mm from ventral umbo, 1.7, 4.2, 5.25, 5.65, 6.0, 7.1, 8.0, LGE 3/181 (new; courtesy of S. V. Lobacheva).
Synonyms
Kolhidaella, Kolchidaella, Lagunosella
Geographic Distribution
Europe, Africa, Asia, ?Mexico, ?Argentina
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (Bathonian)
Beginning International Stage:
Bathonian
Fraction Up In Beginning Stage:
0
Beginning Date:
168.17
Ending Stage in Treatise Usage:
Lower Cretaceous (Barremian)
Ending International Stage:
Barremian
Fraction Up In Ending Stage:
100
Ending Date:
121.4
Description
Medium to large, equibiconvex to dorsibiconvex, subtriangular to subpentagonal, trilobate, uniplicate, rarely asymmetrical, with few strong costae commonly bifurcating, dorsal fold little raised, beak small, conjunct deltidial plates. Hinge teeth strong, dental plates reduced, hinge plates long, almost horizontal, crura falciform, dorsal septum and septalium absent.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Pugnacoidea
Family:
Basiliolidae
Formal Genus Name and Reference:
Lacunosella WISNIEWSKA, 1932, p. 30
Type Species:
Rhynchonella arolica Oppel in Oppel & WAAGEN, 1866, p. 294, OD
Images
(Click to enlarge in a new window)
Fig. 823, 2p–z. L. (L.) kolhidaensis (MOISEEV), Barremian, Caucasus, Georgia; p–s, holotype, dorsal, lateral, anterior, ventral views, approximately ×1 (Moiseev, 1939); t–z, transverse serial sections, distances in mm from ventral umbo, 1.7, 4.2, 5.25, 5.65, 6.0, 7.1, 8.0, LGE 3/181 (new; courtesy of S. V. Lobacheva).
Synonyms
Kolhidaella, Kolchidaella, Lagunosella
Geographic Distribution
Europe, Africa, Asia, ?Mexico, ?Argentina
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (Bathonian)
Beginning International Stage:
Bathonian
Fraction Up In Beginning Stage:
0
Beginning Date:
168.17
Ending Stage in Treatise Usage:
Lower Cretaceous (Barremian)
Ending International Stage:
Barremian
Fraction Up In Ending Stage:
100
Ending Date:
121.4
Description
Medium to large, equibiconvex to dorsibiconvex, subtriangular to subpentagonal, trilobate, uniplicate, rarely asymmetrical, with few strong costae commonly bifurcating, dorsal fold little raised, beak small, conjunct deltidial plates. Hinge teeth strong, dental plates reduced, hinge plates long, almost horizontal, crura falciform, dorsal septum and septalium absent.