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Lyrielasma
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Ptenophyllina
Family:
Ptenophyllidae
Subfamily:
Ptenophyllinae
Formal Genus Name and Reference:
Lyrielasma HILL, 1939a, p. 243
Type Species:
Cyathophyllum subcaespitosum Chapman, 1925, p. 112, OD, †P1731, 14065, 15969-15972, NM, Melbourne, non Cyathophyllum subcaespitosum Meek, 1873, p. 470, and in King, 1877, p. 60, =Lyrielasma chapmani PEDDER, 1967a, p. 5, nom. subst.
Images
(Click to enlarge in a new window)
Fig. 149,1a-d. *L. chapmani, holotype, L.Dev., Lilydale Ls., Viet., Lilydale; a,b, transv., eft, long. sees., approx. X3.5 (Hill, 1939a).
Synonyms
Acmophyllum, ?Salairophyllum
Geographic Distribution
N.Am.(Me.), L.Dev., Australia(Vict.-New S. Wales-Queensl.)-Eu.(Urals-? France-? Carnic Alps)-Asia(Altay-Sayan)-?N.Am.(Me.), M.Dev., Asia (NE.USSR)
Age Range
Beginning Stage in Treatise Usage:
U.Sil.(Pridol.)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
U.Sil.(Pridol.)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Solitary to fasciculate with subcylindrical corallites, increase peripheral, nonparricidal, wide peripheral stereozone of unequal width, septa radially or pinnately arranged, strongly flanged in tabularium in early stages, septal trabeculae more or less horizontal, dissepiments elongate, steeply inclined and rarely lonsdaleoid, rare or absent in early stages, tabular floors axially depressed, tabellae closely spaced and subplanar
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Ptenophyllina
Family:
Ptenophyllidae
Subfamily:
Ptenophyllinae
Formal Genus Name and Reference:
Lyrielasma HILL, 1939a, p. 243
Type Species:
Cyathophyllum subcaespitosum Chapman, 1925, p. 112, OD, †P1731, 14065, 15969-15972, NM, Melbourne, non Cyathophyllum subcaespitosum Meek, 1873, p. 470, and in King, 1877, p. 60, =Lyrielasma chapmani PEDDER, 1967a, p. 5, nom. subst.
Images
(Click to enlarge in a new window)
Fig. 149,1a-d. *L. chapmani, holotype, L.Dev., Lilydale Ls., Viet., Lilydale; a,b, transv., eft, long. sees., approx. X3.5 (Hill, 1939a).
Synonyms
Acmophyllum, ?Salairophyllum
Geographic Distribution
N.Am.(Me.), L.Dev., Australia(Vict.-New S. Wales-Queensl.)-Eu.(Urals-? France-? Carnic Alps)-Asia(Altay-Sayan)-?N.Am.(Me.), M.Dev., Asia (NE.USSR)
Age Range
Beginning Stage in Treatise Usage:
U.Sil.(Pridol.)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
U.Sil.(Pridol.)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
100
Ending Date:
419
Description
Solitary to fasciculate with subcylindrical corallites, increase peripheral, nonparricidal, wide peripheral stereozone of unequal width, septa radially or pinnately arranged, strongly flanged in tabularium in early stages, septal trabeculae more or less horizontal, dissepiments elongate, steeply inclined and rarely lonsdaleoid, rare or absent in early stages, tabular floors axially depressed, tabellae closely spaced and subplanar