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Billingsaria
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Tabulata
Order:
Sarcinulida
Family:
Billingsariidae
Subfamily:
Billingsariinae
Formal Genus Name and Reference:
Billingsaria OKULITCH, 1936a, p. 60
Type Species:
Columnaria parva BILLINGS, 1859a, p. 428, OD, syntype, 1003, Natl. Type Coll., GSC, Ottawa
Images
(Click to enlarge in a new window)
Fig. 340,1a,b. *B. parva (Billings), M. Ord.(Chazy.), N.Y., Valcour. I., a, b, long., transv. secs., X4.8, X6.7 (Okulitch, 1936a)
Synonyms
Geographic Distribution
N.Am.(Que.-N.Y.-Tenn.)Asia (Sib. Platf.-Altay)-Australia (Tasm.-New S. Wales)-Eu.(Ayrshire,U.K.), low.U.Ord., Asia(Al-tay)
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Corallum cerioid (or astreoid), hemispherical or encrusting, corallites with commonly 16 short septa, in some alternating in size, septal trabeculae coarse, dilated wedgewise to form thick wall, vertical trabeculae may develop at axes of corallites, mural pores absent, common tissue between tabularia absent or stout vertical trabeculae only, tabulae complete, horizontal, but may be drawn upward at axial trabeculae.
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Tabulata
Order:
Sarcinulida
Family:
Billingsariidae
Subfamily:
Billingsariinae
Formal Genus Name and Reference:
Billingsaria OKULITCH, 1936a, p. 60
Type Species:
Columnaria parva BILLINGS, 1859a, p. 428, OD, syntype, 1003, Natl. Type Coll., GSC, Ottawa
Images
(Click to enlarge in a new window)
Fig. 340,1a,b. *B. parva (Billings), M. Ord.(Chazy.), N.Y., Valcour. I., a, b, long., transv. secs., X4.8, X6.7 (Okulitch, 1936a)
Synonyms
Geographic Distribution
N.Am.(Que.-N.Y.-Tenn.)Asia (Sib. Platf.-Altay)-Australia (Tasm.-New S. Wales)-Eu.(Ayrshire,U.K.), low.U.Ord., Asia(Al-tay)
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Corallum cerioid (or astreoid), hemispherical or encrusting, corallites with commonly 16 short septa, in some alternating in size, septal trabeculae coarse, dilated wedgewise to form thick wall, vertical trabeculae may develop at axes of corallites, mural pores absent, common tissue between tabularia absent or stout vertical trabeculae only, tabulae complete, horizontal, but may be drawn upward at axial trabeculae.