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Lazutkinia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Ambocoelioidea
Family:
Lazutkiniidae
Formal Genus Name and Reference:
Lazutkinia RZHONSNITSKAIA, 1952, p. 151
Type Species:
L. mamontovensis Rzhonsnitskaia, 1952, p. 152, OD; = Spirifer (Yavorskiella) mamontoviensis Lazutkin in IAVORSKIL, 1940, p. 44, nom. nud.
Images
(Click to enlarge in a new window)
Fig. 1145, 1ad. * L. mamontovensis, Siberia, ventral, dorsal, anterior, and lateral views, X1 (Rzhonsnitskaia, 1955).
Synonyms
Yavorskiella
Geographic Distribution
Kuznetzk basin, Salair, Siberia
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Ventribiconvex with obtuse cardinal angles, ventral interarea long, curved, apsacline, plications numerous, low, rounded, fold and sulcus indistinct or lacking, microornament of numerous concentric lamellae, dental plates short and thick or lacking, knoblike cardinal process and cruralium sited on low median septum
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Ambocoelioidea
Family:
Lazutkiniidae
Formal Genus Name and Reference:
Lazutkinia RZHONSNITSKAIA, 1952, p. 151
Type Species:
L. mamontovensis Rzhonsnitskaia, 1952, p. 152, OD; = Spirifer (Yavorskiella) mamontoviensis Lazutkin in IAVORSKIL, 1940, p. 44, nom. nud.
Images
(Click to enlarge in a new window)
Fig. 1145, 1ad. * L. mamontovensis, Siberia, ventral, dorsal, anterior, and lateral views, X1 (Rzhonsnitskaia, 1955).
Synonyms
Yavorskiella
Geographic Distribution
Kuznetzk basin, Salair, Siberia
Age Range
Beginning Stage in Treatise Usage:
Middle Devonian (Eifelian)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
Middle Devonian (Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Ventribiconvex with obtuse cardinal angles, ventral interarea long, curved, apsacline, plications numerous, low, rounded, fold and sulcus indistinct or lacking, microornament of numerous concentric lamellae, dental plates short and thick or lacking, knoblike cardinal process and cruralium sited on low median septum