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Buttsia
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Solenopleuracea
Family:
Catillicephalidae
Formal Genus Name and Reference:
Buttsia J. L. WILSON, 1951
Type Species:
B. drabensis
Images
(Click to enlarge in a new window)
Fig. 210, 1. *B. drabensis, Pa., 1a, b, cran., dorsal, lateral, x2, 1c, pyg., x3 (363)"
Synonyms
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Francon.)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
73.3
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Upper Cambrian(Francon.)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
87.5
Ending Date:
491.4
Description
Differs from Catillicephala in having bandlike border in front of glabella, opisthoparian sutures, pygidium with shorter axis, downsloping pleural lobes, no down-rolled margin.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Solenopleuracea
Family:
Catillicephalidae
Formal Genus Name and Reference:
Buttsia J. L. WILSON, 1951
Type Species:
B. drabensis
Images
(Click to enlarge in a new window)
Fig. 210, 1. *B. drabensis, Pa., 1a, b, cran., dorsal, lateral, x2, 1c, pyg., x3 (363)"
Synonyms
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian(Francon.)
Beginning International Stage:
Paibian
Fraction Up In Beginning Stage:
73.3
Beginning Date:
494.95
Ending Stage in Treatise Usage:
Upper Cambrian(Francon.)
Ending International Stage:
Jiangshanian
Fraction Up In Ending Stage:
87.5
Ending Date:
491.4
Description
Differs from Catillicephala in having bandlike border in front of glabella, opisthoparian sutures, pygidium with shorter axis, downsloping pleural lobes, no down-rolled margin.