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Hysterolites
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Hysterolitidae
Formal Genus Name and Reference:
Hysterolites von SCHLOTHEIM, 1820, p. 247
Type Species:
H. hystericus von Schlotheim, 1820, p. 249, SD DALL, 1877a, p. 38
Images
(Click to enlarge in a new window)
Fig. 1213, 2a-c. * H. hystericus hystericus, Pragian, Germany, a, mold of ventral interior, X1.5, b, mold of dorsal interior, X1, c, ventral exterior, X1.5 (Solle, 1963).
Synonyms
Geographic Distribution
Europe, western USA (Nevada)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium size, biconvex, transverse, with acute to rounded cardinal angles, ventral interarea curved, apsacline, fold and sulcus smooth, flanks with simple, rounded plications and U shaped interspaces, growth lines numerous, strong, dental plates strong, tending to recurve medially, with little umbonal callus, ctenophoridium may be elevated, no crural plates.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Hysterolitidae
Formal Genus Name and Reference:
Hysterolites von SCHLOTHEIM, 1820, p. 247
Type Species:
H. hystericus von Schlotheim, 1820, p. 249, SD DALL, 1877a, p. 38
Images
(Click to enlarge in a new window)
Fig. 1213, 2a-c. * H. hystericus hystericus, Pragian, Germany, a, mold of ventral interior, X1.5, b, mold of dorsal interior, X1, c, ventral exterior, X1.5 (Solle, 1963).
Synonyms
Geographic Distribution
Europe, western USA (Nevada)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium size, biconvex, transverse, with acute to rounded cardinal angles, ventral interarea curved, apsacline, fold and sulcus smooth, flanks with simple, rounded plications and U shaped interspaces, growth lines numerous, strong, dental plates strong, tending to recurve medially, with little umbonal callus, ctenophoridium may be elevated, no crural plates.