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Yokoyamaella
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Lonsdaleiina
Family:
Waagenophyllidae
Subfamily:
Waagenophyllinae
Formal Genus Name and Reference:
Yokoyamaella Minato & KATO, 1965a, p. 135
Type Species:
Lonsdaleia (?Waagenophyllum) yokoyamai Ozawa, 1925, p. 72, OD, †III, 64, Ozawa Coll., UT, Tokyo, lectotype by Minato & KATO, 1965a, p. 136
Images
(Click to enlarge in a new window)
Synonyms
Geographic Distribution
Asia(Japan)-N.Z.-Eu.(Yugo.-Carnic Alps).
Age Range
Beginning Stage in Treatise Usage:
Perm.(Pseudoschwagerina)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.(Yabeina Z.)
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Cerioid or in part thamnasterioid, septal bases dilated to form peripheral stereozone, axial column with medial plate, few radial lamellae, and numerous conical axial tabellae, tabulae with narrow transverse annuli against the columnella, and wide peripheral clintabellae, dissepimentarium normal and moderately wide, septa rather thin except at peripheral stereozone, lonsdaleoid dissepiments may develop in angles of corallites prior to appearance of peripheral, nonparricidal offsets.
References
Museum or Author Information
Classification
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Rugosa
Order:
Stauriida
Suborder:
Lonsdaleiina
Family:
Waagenophyllidae
Subfamily:
Waagenophyllinae
Formal Genus Name and Reference:
Yokoyamaella Minato & KATO, 1965a, p. 135
Type Species:
Lonsdaleia (?Waagenophyllum) yokoyamai Ozawa, 1925, p. 72, OD, †III, 64, Ozawa Coll., UT, Tokyo, lectotype by Minato & KATO, 1965a, p. 136
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
Asia(Japan)-N.Z.-Eu.(Yugo.-Carnic Alps).
Age Range
Beginning Stage in Treatise Usage:
Perm.(Pseudoschwagerina)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.(Yabeina Z.)
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Cerioid or in part thamnasterioid, septal bases dilated to form peripheral stereozone, axial column with medial plate, few radial lamellae, and numerous conical axial tabellae, tabulae with narrow transverse annuli against the columnella, and wide peripheral clintabellae, dissepimentarium normal and moderately wide, septa rather thin except at peripheral stereozone, lonsdaleoid dissepiments may develop in angles of corallites prior to appearance of peripheral, nonparricidal offsets.