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Juralina
Classification
Phylum:
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Loboidothyridoidea
Family:
Postepithyrididae
Formal Genus Name and Reference:
Juralina KYANSEP, 1961, p. 29
Type Species:
J. procerus, OD
Images
(Click to enlarge in a new window)
Fig. 1401, 4a-b. * J. procerus, Kimmeridgian, Crimea, dorsal and lateral views of holotype, X1 (Muir-Wood, 1965a).——Fig. 1401, 4c-d. J. cervicula Rollier, Upper Jurassic, Germany, c, dorsal view, d, ventral view of dorsal valve interior, X1 (Cooper, 1983).
Synonyms
Geographic Distribution
Germany, France, Switzerland, Russia, Caucasus, Crimea, Malaysia, ?Morocco
Age Range
Beginning Stage in Treatise Usage:
Upper Jurassic (Oxfordian)
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Upper Jurassic (Kimmeridgian)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
100
Ending Date:
149.24
Description
Large, elongate oval, smooth, planoconvex or biconvex, anterior commissure rectimarginate to gently uniplicate, beak elongate, straight to suberect, foramen large, permesothyrid, symphytium high, exposed (externally homeomorphic with Rectithyris), pedicle collar present, cardinal process prominent, medianly depressed, crural bases ventrally directed from hinge plates, loop triangular, strongly arched, with flattened bridge, 0.4 dorsal valve length
References
Museum or Author Information
Classification
Phylum:
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Loboidothyridoidea
Family:
Postepithyrididae
Formal Genus Name and Reference:
Juralina KYANSEP, 1961, p. 29
Type Species:
J. procerus, OD
Images
(Click to enlarge in a new window)
Fig. 1401, 4a-b. * J. procerus, Kimmeridgian, Crimea, dorsal and lateral views of holotype, X1 (Muir-Wood, 1965a).——Fig. 1401, 4c-d. J. cervicula Rollier, Upper Jurassic, Germany, c, dorsal view, d, ventral view of dorsal valve interior, X1 (Cooper, 1983).
Synonyms
Geographic Distribution
Germany, France, Switzerland, Russia, Caucasus, Crimea, Malaysia, ?Morocco
Age Range
Beginning Stage in Treatise Usage:
Upper Jurassic (Oxfordian)
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Upper Jurassic (Kimmeridgian)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
100
Ending Date:
149.24
Description
Large, elongate oval, smooth, planoconvex or biconvex, anterior commissure rectimarginate to gently uniplicate, beak elongate, straight to suberect, foramen large, permesothyrid, symphytium high, exposed (externally homeomorphic with Rectithyris), pedicle collar present, cardinal process prominent, medianly depressed, crural bases ventrally directed from hinge plates, loop triangular, strongly arched, with flattened bridge, 0.4 dorsal valve length