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Ajacicyathus
Classification
Phylum:
Porifera
Class:
Archaeocyatha
Order:
Ajacicyathida
Suborder:
Ajacicyathina
Superfamily:
Bronchocyathoidea
Family:
Ajacicyathidae
Formal Genus Name and Reference:
Ajacicyathus R. Bedford & J. BEDFORD, 1939, p. 73
Type Species:
*Archaeocyathus ajax TAYLOR, 1910, p. 118, OD, lectotype, TAYLOR, 1910, pl. 1, photo 1a, pl. 7, photo 39 (lower part), Hill, 1965, pl. 1, 6, DEBRENNE, 1974b, pl. 21, 2-4, SD DEBRENNE, 1970a, p. 27, SAM T1550A, Adelaide
Images
(Click to enlarge in a new window)
Fig. 533, 1 a-b. *A. ajax (Taylor), Ajax Limestone, Botoman, Ajax Mine, South Australia, Australia, lectotype, SAM T1550A, a, oblique longitudinal view, X1 (Taylor, 1910), b, detail of septum and inner wall in longitudinal view (outer wall to right), X10 (Debrenne, 1974b).
Synonyms
Loculicyathellus, Ajacicyathus, Ambistapis
Geographic Distribution
Siberian Platform, Altay Sayan, Tuva, Mongolia, Far East, Australia, Antarctica, Sardinia, France, Canada
Age Range
Beginning Stage in Treatise Usage:
lower Cambrian (Atdabanian 1)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
521
Ending Stage in Treatise Usage:
lower Cambrian (Toyonian 2)
Ending International Stage:
Cambrian Stage 4
Fraction Up In Ending Stage:
58
Ending Date:
511.31
Description
Inner wall with several rows of simple pores per intersept, stirrup pores may be present, septa aporose to sparsely porous
References
Bedford, R., & J. Bedford. 1939. Development and classification of Archaeos (Pleospongia). Kyancutta Museum, Memoirs 6:67-82, fig. 160-212, pl. 42-52.
Museum or Author Information
Classification
Phylum:
Porifera
Class:
Archaeocyatha
Order:
Ajacicyathida
Suborder:
Ajacicyathina
Superfamily:
Bronchocyathoidea
Family:
Ajacicyathidae
Formal Genus Name and Reference:
Ajacicyathus R. Bedford & J. BEDFORD, 1939, p. 73
Type Species:
*Archaeocyathus ajax TAYLOR, 1910, p. 118, OD, lectotype, TAYLOR, 1910, pl. 1, photo 1a, pl. 7, photo 39 (lower part), Hill, 1965, pl. 1, 6, DEBRENNE, 1974b, pl. 21, 2-4, SD DEBRENNE, 1970a, p. 27, SAM T1550A, Adelaide
Images
(Click to enlarge in a new window)
Fig. 533, 1 a-b. *A. ajax (Taylor), Ajax Limestone, Botoman, Ajax Mine, South Australia, Australia, lectotype, SAM T1550A, a, oblique longitudinal view, X1 (Taylor, 1910), b, detail of septum and inner wall in longitudinal view (outer wall to right), X10 (Debrenne, 1974b).
Synonyms
Loculicyathellus, Ajacicyathus, Ambistapis
Geographic Distribution
Siberian Platform, Altay Sayan, Tuva, Mongolia, Far East, Australia, Antarctica, Sardinia, France, Canada
Age Range
Beginning Stage in Treatise Usage:
lower Cambrian (Atdabanian 1)
Beginning International Stage:
Cambrian Stage 3
Fraction Up In Beginning Stage:
0
Beginning Date:
521
Ending Stage in Treatise Usage:
lower Cambrian (Toyonian 2)
Ending International Stage:
Cambrian Stage 4
Fraction Up In Ending Stage:
58
Ending Date:
511.31
Description
Inner wall with several rows of simple pores per intersept, stirrup pores may be present, septa aporose to sparsely porous
References
Bedford, R., & J. Bedford. 1939. Development and classification of Archaeos (Pleospongia). Kyancutta Museum, Memoirs 6:67-82, fig. 160-212, pl. 42-52.