Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Quadrithyrina
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Xenomartiniidae
Formal Genus Name and Reference:
Quadrithyrina HAVLÍČEK, 1959, p. 136
Type Species:
Q. ivanovae, OD
Images
(Click to enlarge in a new window)
Fig. 1239, 1a-e. *Q. ivanovae, upper Emsian, Czech Republic, a-d, dorsal, ventral, anterior, lateral views, X3, e, transverse section, X2 (Havlíček, 1959).
Synonyms
Geographic Distribution
Czech Republic, Turkestan, Australia (New South Wales, Queensland)
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:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Small or medium size, slightly transverse, with rounded cardinal extremities and almost catacline, high ventral interarea, fold and sulcus well developed, smooth, lateral plications lacking, microornament of concentric growth lines and radial capillae, high, narrow, ventral median septum and apical callus, lacking dental plates, crural plates short or obsolescent, ctenophoridium lacking.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Xenomartiniidae
Formal Genus Name and Reference:
Quadrithyrina HAVLÍČEK, 1959, p. 136
Type Species:
Q. ivanovae, OD
Images
(Click to enlarge in a new window)
Fig. 1239, 1a-e. *Q. ivanovae, upper Emsian, Czech Republic, a-d, dorsal, ventral, anterior, lateral views, X3, e, transverse section, X2 (Havlíček, 1959).
Synonyms
Geographic Distribution
Czech Republic, Turkestan, Australia (New South Wales, Queensland)
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:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Small or medium size, slightly transverse, with rounded cardinal extremities and almost catacline, high ventral interarea, fold and sulcus well developed, smooth, lateral plications lacking, microornament of concentric growth lines and radial capillae, high, narrow, ventral median septum and apical callus, lacking dental plates, crural plates short or obsolescent, ctenophoridium lacking.