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Vertexia
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Vertexioidea
Family:
Vertexiidae
Formal Genus Name and Reference:
Vertexia LYUTKEVICH, 1941
Type Species:
*V. tauricornis, OD
Images
(Click to enlarge in a new window)
Fig. 57,1. *V. tauricornis, Fileyskoe beds, N.Dvina Valley, 1a, lat. view, X21, 16 , lat. view with two spines, X10, 1c , umbonal view, X11 (80)
Synonyms
Geographic Distribution
N.Dvina Valley, Fileyskoe beds
Age Range
Beginning Stage in Treatise Usage:
U.Perm.(Tatar.)
Beginning International Stage:
Wordian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.(Tatar.)
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
40
Ending Date:
257.43
Description
Carapace subovate, beak (of larval valve) developed as hollow spine with broad base, spinous apophyses terminate extremities of growth bands, last apophysis a broad-based spine, Sculpture punctate
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Branchiopoda
Subclass:
Diplostraca
Order:
Conchostraca
Suborder:
Spinicaudata
Superfamily:
Vertexioidea
Family:
Vertexiidae
Formal Genus Name and Reference:
Vertexia LYUTKEVICH, 1941
Type Species:
*V. tauricornis, OD
Images
(Click to enlarge in a new window)
Fig. 57,1. *V. tauricornis, Fileyskoe beds, N.Dvina Valley, 1a, lat. view, X21, 16 , lat. view with two spines, X10, 1c , umbonal view, X11 (80)
Synonyms
Geographic Distribution
N.Dvina Valley, Fileyskoe beds
Age Range
Beginning Stage in Treatise Usage:
U.Perm.(Tatar.)
Beginning International Stage:
Wordian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.(Tatar.)
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
40
Ending Date:
257.43
Description
Carapace subovate, beak (of larval valve) developed as hollow spine with broad base, spinous apophyses terminate extremities of growth bands, last apophysis a broad-based spine, Sculpture punctate