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Metorthis
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Orthida
Suborder:
Orthidina
Superfamily:
Orthoidea
Family:
Plaesiomyidae
Subfamily:
Metorthiinae
Formal Genus Name and Reference:
Metorthis WANG, 1955b, p. 333
Type Species:
M. alata, OD
Images
(Click to enlarge in a new window)
Fig. 542,2a–d. *M. alata, Arenig, southern China; a,b, dorsal, posterior views of conjoined valves, ×2.5; c, ventral interior, × 2.5; d, dorsal interior, ×2.5 (Wang, 1955b).
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Lower Ordovician (Arenig)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Subquadrate with variable cardinal extremities, ramicostellate, quadripartite dorsal adductor scars subequal.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Orthida
Suborder:
Orthidina
Superfamily:
Orthoidea
Family:
Plaesiomyidae
Subfamily:
Metorthiinae
Formal Genus Name and Reference:
Metorthis WANG, 1955b, p. 333
Type Species:
M. alata, OD
Images
(Click to enlarge in a new window)
Fig. 542,2a–d. *M. alata, Arenig, southern China; a,b, dorsal, posterior views of conjoined valves, ×2.5; c, ventral interior, × 2.5; d, dorsal interior, ×2.5 (Wang, 1955b).
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Lower Ordovician (Arenig)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Subquadrate with variable cardinal extremities, ramicostellate, quadripartite dorsal adductor scars subequal.