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Pseudomyalina
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Ambonychiacea
Family:
Myalinidae
Subfamily:
Marine types
Formal Genus Name and Reference:
Pseudomyalina DICKINS, 1956
Type Species:
P. obliqua, OD
Images
(Click to enlarge in a new window)
Fig. C29,6. *P. obliqua, LV ext., X0.5 (Dickins, 1956)
Synonyms
Geographic Distribution
W.Australia
Age Range
Beginning Stage in Treatise Usage:
L.Perm.(Coolkilya)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
L.Perm.(Coolkilya)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Large shells, similar in form to Septimyalina but with weak radial costae and lacking umbonal septum, outer prismatic ostracum very much thicker than inner lamellar ostracum in both valves
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Ambonychiacea
Family:
Myalinidae
Subfamily:
Marine types
Formal Genus Name and Reference:
Pseudomyalina DICKINS, 1956
Type Species:
P. obliqua, OD
Images
(Click to enlarge in a new window)
Fig. C29,6. *P. obliqua, LV ext., X0.5 (Dickins, 1956)
Synonyms
Geographic Distribution
W.Australia
Age Range
Beginning Stage in Treatise Usage:
L.Perm.(Coolkilya)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
L.Perm.(Coolkilya)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Large shells, similar in form to Septimyalina but with weak radial costae and lacking umbonal septum, outer prismatic ostracum very much thicker than inner lamellar ostracum in both valves