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Heterophrentis
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stauriina
Family:
Amplexidae
Formal Genus Name and Reference:
Heterophrentis BILLINGS, 1875, p. 235
Type Species:
H. spatiosa, SD Miller, 1889, p. 193 (=Zaphrentis spatiosa Billings, 1858, p. 178, syntype, 3451a, GSC, Ottawa, not sectioned or illustrated and calice filled with matrix, M.Dev., Rama's Farm, Pt. Colborne, Ont., assumed to =Zaphrentis prolifica Billings, 1858, p. 176, +3449h, GSC, Ottawa, same loc., by O'CONNELL, 1914, p. 183)
Images
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Synonyms
Geographic Distribution
M.Dev.(Couvin.), N.Am.(Ind.-Ky.-Ont.-?Ohio)-?S.Am.(Venez.)-Eu.(Spain)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.(Couvin.)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev.(Couvin.)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Solitary, large, ceratoid to trochoid, cardinal fossula prominent on convex side of corallum, alar fossulae may be prominent also, major septa thick, amplexoid, thinning toward axis, axial lobes present, cardinal septum very short, minor septa short, tabular floors horizontal in wide axial region, distally arched in periaxial region and bending abruptly downward peripherally, no dissepiments. [Diagnosis based on H. proliica (BILLINGS), sellsu STUMM, 1949, pI. 5, fig. 10. BILLINGS' type material must be restudied before generic name can be safely used.]
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stauriina
Family:
Amplexidae
Formal Genus Name and Reference:
Heterophrentis BILLINGS, 1875, p. 235
Type Species:
H. spatiosa, SD Miller, 1889, p. 193 (=Zaphrentis spatiosa Billings, 1858, p. 178, syntype, 3451a, GSC, Ottawa, not sectioned or illustrated and calice filled with matrix, M.Dev., Rama's Farm, Pt. Colborne, Ont., assumed to =Zaphrentis prolifica Billings, 1858, p. 176, +3449h, GSC, Ottawa, same loc., by O'CONNELL, 1914, p. 183)
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
M.Dev.(Couvin.), N.Am.(Ind.-Ky.-Ont.-?Ohio)-?S.Am.(Venez.)-Eu.(Spain)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.(Couvin.)
Beginning International Stage:
Eifelian
Fraction Up In Beginning Stage:
0
Beginning Date:
394.3
Ending Stage in Treatise Usage:
M.Dev.(Couvin.)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Solitary, large, ceratoid to trochoid, cardinal fossula prominent on convex side of corallum, alar fossulae may be prominent also, major septa thick, amplexoid, thinning toward axis, axial lobes present, cardinal septum very short, minor septa short, tabular floors horizontal in wide axial region, distally arched in periaxial region and bending abruptly downward peripherally, no dissepiments. [Diagnosis based on H. proliica (BILLINGS), sellsu STUMM, 1949, pI. 5, fig. 10. BILLINGS' type material must be restudied before generic name can be safely used.]