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Cotalagnostus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Spinagnostidae
Formal Genus Name and Reference:
Cotalagnostus WHITEHOUSE, 1936, p. 92
Type Species:
Agnostus lens Grönwall, 1902, p. 65, OD, syntypes (GRÖNWALL, 1902, pl. 1, fig. 8-9), 149, 150, MGUH, Copenhagen
Images
(Click to enlarge in a new window)
Fig. 226,1a,b. *C. lens (G RÖNWALL ), Middle Cambrian (Hypagnostus parvifrons Zone), Denmark (Borregaard, Øle Aa, Bornholm); a, syntype, cephalon, MGUH 149, × 10; b, syntype, pygidium, MGUH 150, × 12 (new).
Synonyms
Geographic Distribution
Argentina; China (Hunan, Guizhou); Sweden, P. atavus to P. forchhammeri Zones; Denmark, P. davidis Zone; Norway, P. paradoxissimus to P. forchhammeri Zones; England, Wales, H. parvifrons to P. punctuosus Zones; Canada (Newfoundland, Nova Scotia), late P. hicksi to early P. davidis Zones; USA (Utah, Alaska), B. contracta Subzone; Australia (Queensland), D. notalibrae Zone; Russia (southeastern Siberia), T. fissus or P. hicksi to late P. davidis Zones, (Kemerov), P. forchhammeri Zone.
Age Range
Beginning Stage in Treatise Usage:
Middle Cambrian
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
Middle Cambrian
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Like Hypagnostus but with glabellar F3 effaced and commonly with axial furrows surrounding posterior lobe of pygidial axis effaced.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Spinagnostidae
Formal Genus Name and Reference:
Cotalagnostus WHITEHOUSE, 1936, p. 92
Type Species:
Agnostus lens Grönwall, 1902, p. 65, OD, syntypes (GRÖNWALL, 1902, pl. 1, fig. 8-9), 149, 150, MGUH, Copenhagen
Images
(Click to enlarge in a new window)
Fig. 226,1a,b. *C. lens (G RÖNWALL ), Middle Cambrian (Hypagnostus parvifrons Zone), Denmark (Borregaard, Øle Aa, Bornholm); a, syntype, cephalon, MGUH 149, × 10; b, syntype, pygidium, MGUH 150, × 12 (new).
Synonyms
Geographic Distribution
Argentina; China (Hunan, Guizhou); Sweden, P. atavus to P. forchhammeri Zones; Denmark, P. davidis Zone; Norway, P. paradoxissimus to P. forchhammeri Zones; England, Wales, H. parvifrons to P. punctuosus Zones; Canada (Newfoundland, Nova Scotia), late P. hicksi to early P. davidis Zones; USA (Utah, Alaska), B. contracta Subzone; Australia (Queensland), D. notalibrae Zone; Russia (southeastern Siberia), T. fissus or P. hicksi to late P. davidis Zones, (Kemerov), P. forchhammeri Zone.
Age Range
Beginning Stage in Treatise Usage:
Middle Cambrian
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
Middle Cambrian
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Like Hypagnostus but with glabellar F3 effaced and commonly with axial furrows surrounding posterior lobe of pygidial axis effaced.