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Altaja
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Arachinophyllina
Family:
Entelophyllidae
Formal Genus Name and Reference:
Altaja Zheltonogova in MARKOVSKIY, 1960, p. 226
Type Species:
A. silurica, OD, +3692, coIl. 1508, ZSGUp, Novokuznetsk
Images
(Click to enlarge in a new window)
Fig. 128,2a,b. *A. silurica, holotype, Yurman suite, SW. Salair, long., transv. secs., X3.8 (Markovskiy, 1960).
Synonyms
Geographic Distribution
Asia (Salair-Altay), ?N.Am.(Alaska)
Age Range
Beginning Stage in Treatise Usage:
L.Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
M.Sil.(Wenlock.)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Small, cerioid or fasciculate with lateral increase; each calice with flat marginarium and tall columella in center of calical pit; major septa thin in tabularium, connected to columella, tabularium sharply bounded from dissepimentarium, tabellae numerous, convex, in conical floors, dissepiments small, horizontally disposed at outer wall, but vertically declined at boundary with tabularium, rodlike columella present from early stages, oval in transverse section and appearing to be thickened end of long cardinal septum [homeomorph of Carboniferous Lithostrotion FLEMING, 1828].
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Arachinophyllina
Family:
Entelophyllidae
Formal Genus Name and Reference:
Altaja Zheltonogova in MARKOVSKIY, 1960, p. 226
Type Species:
A. silurica, OD, +3692, coIl. 1508, ZSGUp, Novokuznetsk
Images
(Click to enlarge in a new window)
Fig. 128,2a,b. *A. silurica, holotype, Yurman suite, SW. Salair, long., transv. secs., X3.8 (Markovskiy, 1960).
Synonyms
Geographic Distribution
Asia (Salair-Altay), ?N.Am.(Alaska)
Age Range
Beginning Stage in Treatise Usage:
L.Sil.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
M.Sil.(Wenlock.)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Small, cerioid or fasciculate with lateral increase; each calice with flat marginarium and tall columella in center of calical pit; major septa thin in tabularium, connected to columella, tabularium sharply bounded from dissepimentarium, tabellae numerous, convex, in conical floors, dissepiments small, horizontally disposed at outer wall, but vertically declined at boundary with tabularium, rodlike columella present from early stages, oval in transverse section and appearing to be thickened end of long cardinal septum [homeomorph of Carboniferous Lithostrotion FLEMING, 1828].