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Amplexiphyllum
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stereolasmatina
Family:
Stereolasmatidae
Formal Genus Name and Reference:
Amplexiphyllum STUMM, 1949, p. 9
Type Species:
Amplexus hamiltoniae HALL, 1876, explanation to pI. 19, fig. 20-23; 00; syntypes, 4973/1-3, AMNH, New York
Images
(Click to enlarge in a new window)
Fig. 202,4. *A. hamiltoniae (HALL), syntype, Hamilton Gr., N.Y.; long. sec., X 1.0 (Hal1, 1876).
Synonyms
Geographic Distribution
N.Am.(N.Y.)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.( Givet.)
Beginning International Stage:
Givetian
Fraction Up In Beginning Stage:
0
Beginning Date:
385.3
Ending Stage in Treatise Usage:
M.Dev.( Givet.)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Solitary, ceratoid to cylindrical, or irregularly contorted, not large; major septa thick and extending to axis in young stages, thinning and retreating from axis in later stages; cardinal fossula distinguished by short cardinal septum; minor septa very short, no dissepiments; tabulae complete or incomplete, typically horizontal axially and becoming deflected proximal1y as they approach periphery [see STUMM & WATKINS, 1961, p. 446].
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Stereolasmatina
Family:
Stereolasmatidae
Formal Genus Name and Reference:
Amplexiphyllum STUMM, 1949, p. 9
Type Species:
Amplexus hamiltoniae HALL, 1876, explanation to pI. 19, fig. 20-23; 00; syntypes, 4973/1-3, AMNH, New York
Images
(Click to enlarge in a new window)
Fig. 202,4. *A. hamiltoniae (HALL), syntype, Hamilton Gr., N.Y.; long. sec., X 1.0 (Hal1, 1876).
Synonyms
Geographic Distribution
N.Am.(N.Y.)
Age Range
Beginning Stage in Treatise Usage:
M.Dev.( Givet.)
Beginning International Stage:
Givetian
Fraction Up In Beginning Stage:
0
Beginning Date:
385.3
Ending Stage in Treatise Usage:
M.Dev.( Givet.)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
100
Ending Date:
378.9
Description
Solitary, ceratoid to cylindrical, or irregularly contorted, not large; major septa thick and extending to axis in young stages, thinning and retreating from axis in later stages; cardinal fossula distinguished by short cardinal septum; minor septa very short, no dissepiments; tabulae complete or incomplete, typically horizontal axially and becoming deflected proximal1y as they approach periphery [see STUMM & WATKINS, 1961, p. 446].