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Astroproetus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Proetacea
Family:
Proetidae
Formal Genus Name and Reference:
Astroproetus BEGG, 1939
Type Species:
Astroproetus reedi
Images
(Click to enlarge in a new window)
Fig. 301, 4. *A. reedi, Scot.(Girvan), exoskel., x1.5 (375).
Synonyms
Geographic Distribution
G.Brit.
Age Range
Beginning Stage in Treatise Usage:
U.Ord.(Ashgill.)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
447.72
Ending Stage in Treatise Usage:
U.Ord.(Ashgill.)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Cephalon with preglabellar field scarcely 0.7 of length of glabella, glabella trapezoidal, gently tapering, eyes long, strongly arcuate. Thorax with 10 segments (length 16 mm). Pygidium with axis having 10 rings, pleural fields with about 6 ribs curved backward.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Proetacea
Family:
Proetidae
Formal Genus Name and Reference:
Astroproetus BEGG, 1939
Type Species:
Astroproetus reedi
Images
(Click to enlarge in a new window)
Fig. 301, 4. *A. reedi, Scot.(Girvan), exoskel., x1.5 (375).
Synonyms
Geographic Distribution
G.Brit.
Age Range
Beginning Stage in Treatise Usage:
U.Ord.(Ashgill.)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
447.72
Ending Stage in Treatise Usage:
U.Ord.(Ashgill.)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Cephalon with preglabellar field scarcely 0.7 of length of glabella, glabella trapezoidal, gently tapering, eyes long, strongly arcuate. Thorax with 10 segments (length 16 mm). Pygidium with axis having 10 rings, pleural fields with about 6 ribs curved backward.