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Urushtenoidea
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Urushtenoidea Jing Yu-gan & Hu SHI-ZHONG, 1978, p. 116
Type Species:
Urushtenia chaoi Ching YU-GAN, 1963, OD
Images
(Click to enlarge in a new window)
Fig. 422, 2a–c. *U. chaoi (CHING), ?Roadian, Hsiaojiangbian Formation, Jiangxi; a,b, specimen viewed anteriorly, laterally, ×1; c, specimen viewed anteriorly showing commissural spines, × 1 (new).——Fig. 422, 2d. U. chenanensis (CHAN ), Kuhfeng Formation, Shangxi; ventral valve exterior, ×1.5 (Jing & Hu, 1978).
Synonyms
Uncisteges
Geographic Distribution
southern China
Age Range
Beginning Stage in Treatise Usage:
Upper Lower Permian
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
Upper Lower Permian
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
100
Ending Date:
254.24
Description
Small, planoconvex corpus, geniculated to trails, ribbing originates on disks, prominent on trails, rugae impersistent, more prominent on ventral disk, spines erect on ribs, trail margins extending as interlocking spines similar to Chonosteges, cardinal process with basal pit, adductor field may be elevated, marginal ridge with row of spines
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Urushtenoidea Jing Yu-gan & Hu SHI-ZHONG, 1978, p. 116
Type Species:
Urushtenia chaoi Ching YU-GAN, 1963, OD
Images
(Click to enlarge in a new window)
Fig. 422, 2a–c. *U. chaoi (CHING), ?Roadian, Hsiaojiangbian Formation, Jiangxi; a,b, specimen viewed anteriorly, laterally, ×1; c, specimen viewed anteriorly showing commissural spines, × 1 (new).——Fig. 422, 2d. U. chenanensis (CHAN ), Kuhfeng Formation, Shangxi; ventral valve exterior, ×1.5 (Jing & Hu, 1978).
Synonyms
Uncisteges
Geographic Distribution
southern China
Age Range
Beginning Stage in Treatise Usage:
Upper Lower Permian
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
Upper Lower Permian
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
100
Ending Date:
254.24
Description
Small, planoconvex corpus, geniculated to trails, ribbing originates on disks, prominent on trails, rugae impersistent, more prominent on ventral disk, spines erect on ribs, trail margins extending as interlocking spines similar to Chonosteges, cardinal process with basal pit, adductor field may be elevated, marginal ridge with row of spines