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Yassia
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Ketophyllina
Family:
Endophyllidae
Formal Genus Name and Reference:
Yassia JONES, 1930, p. 36
Type Species:
Spongophyllum enorme ETHERIDGE, 1913, p. 35; 00; tF85n, AM, Sydney; lectotype by HILL, 1940c, p. 409]
Images
(Click to enlarge in a new window)
Fig. 142,la,b. *Y. enormis (ETHERIDGE), syntypes, Bowspring Ls., New S. Wales, escarpment NE. of Boonoo Ponds Cr., near Yass; a,b, transv., long. sees., X1 (McLean, 1974b; photographs courtesy R. A. McLean).
Synonyms
Crinophyllum
Geographic Distribution
Asia(Sib.Platf.); U.Sil.(low.Ludlov.), Australia(New S.Wales); V.Sil.( Pridol.), N.Am.(Yukon)
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.
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Cerioid, corallites very large with septa developed only as weak crests on dissepiments and tabulae, but traces of their bases contiguous and naotic; tabularium wide, tabulae complete, very shallowly concave; dissepiments very large, steeply inclined near tabularium; cardinal fossula indistinct [see also McLEAN, 1974b, p. 665; PEDDER, 1976a, p. 286].
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Ketophyllina
Family:
Endophyllidae
Formal Genus Name and Reference:
Yassia JONES, 1930, p. 36
Type Species:
Spongophyllum enorme ETHERIDGE, 1913, p. 35; 00; tF85n, AM, Sydney; lectotype by HILL, 1940c, p. 409]
Images
(Click to enlarge in a new window)
Fig. 142,la,b. *Y. enormis (ETHERIDGE), syntypes, Bowspring Ls., New S. Wales, escarpment NE. of Boonoo Ponds Cr., near Yass; a,b, transv., long. sees., X1 (McLean, 1974b; photographs courtesy R. A. McLean).
Synonyms
Crinophyllum
Geographic Distribution
Asia(Sib.Platf.); U.Sil.(low.Ludlov.), Australia(New S.Wales); V.Sil.( Pridol.), N.Am.(Yukon)
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.
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Cerioid, corallites very large with septa developed only as weak crests on dissepiments and tabulae, but traces of their bases contiguous and naotic; tabularium wide, tabulae complete, very shallowly concave; dissepiments very large, steeply inclined near tabularium; cardinal fossula indistinct [see also McLEAN, 1974b, p. 665; PEDDER, 1976a, p. 286].