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Rotundocyathus
Classification
Phylum:
Porifera
Class:
Archaeocyatha
Order:
Ajacicyathida
Superfamily:
Bronchocyathoidea
Family:
Ajacicyathidae
Formal Genus Name and Reference:
Rotundocyathus VOLOGDIN, 1960, p. 422
Type Species:
R. rotaceus, OD; holotype, Vologdin, 1960, fig. 1zh, not located
Images
(Click to enlarge in a new window)
Fig. 535, 3. *R. rotaceus, Verkhneynyrga Formation, Botoman, Lebed' River, Altay Mountains, Altay Sayan, Russia, holotype, transverse section, X1 (Vologdin, 1960)
Synonyms
Geographic Distribution
Siberian Platform, Altay Sayan, Tuva, Mongolia, Transbaikalia, Far East, South China, Morocco, Iberia, France, Sardinia
Age Range
Beginning Stage in Treatise Usage:
lower Cambrian (Atdabanian 2)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
18
Beginning Date:
519.83
Ending Stage in Treatise Usage:
lower Cambrian (Botomian 1)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
90
Ending Date:
515.15
Description
Inner wall with one row of simple pores per intersept, septa completely porous, pectinate tabulae may be present
References
Vologdin, A. G. 1960. O rode Ajacicyathus Bedford et Bedford, 1939 i sem. Ajacicyathidae Bedford et Bedford, 1939 [On the genus Ajacicyathus Bedford et Bedford, 1939 and the fam. Ajacicyathidae Bedford et Bedford, 1939]. Akademiya Nauk SSSR, Doklady 130:421-424, 1 fig.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Archaeocyatha
Order:
Ajacicyathida
Superfamily:
Bronchocyathoidea
Family:
Ajacicyathidae
Formal Genus Name and Reference:
Rotundocyathus VOLOGDIN, 1960, p. 422
Type Species:
R. rotaceus, OD; holotype, Vologdin, 1960, fig. 1zh, not located
Images
(Click to enlarge in a new window)
Fig. 535, 3. *R. rotaceus, Verkhneynyrga Formation, Botoman, Lebed' River, Altay Mountains, Altay Sayan, Russia, holotype, transverse section, X1 (Vologdin, 1960)
Synonyms
Geographic Distribution
Siberian Platform, Altay Sayan, Tuva, Mongolia, Transbaikalia, Far East, South China, Morocco, Iberia, France, Sardinia
Age Range
Beginning Stage in Treatise Usage:
lower Cambrian (Atdabanian 2)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
18
Beginning Date:
519.83
Ending Stage in Treatise Usage:
lower Cambrian (Botomian 1)
Ending International Stage:
Cambrian Stage 3
Fraction Up In Ending Stage:
90
Ending Date:
515.15
Description
Inner wall with one row of simple pores per intersept, septa completely porous, pectinate tabulae may be present
References
Vologdin, A. G. 1960. O rode Ajacicyathus Bedford et Bedford, 1939 i sem. Ajacicyathidae Bedford et Bedford, 1939 [On the genus Ajacicyathus Bedford et Bedford, 1939 and the fam. Ajacicyathidae Bedford et Bedford, 1939]. Akademiya Nauk SSSR, Doklady 130:421-424, 1 fig.