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Paromalomena
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Glyptomenidae
Formal Genus Name and Reference:
Paromalomena RONG, 1984, p. 150
Type Species:
Platymena polonica TEMPLE, 1965, p. 407, OD
Images
(Click to enlarge in a new window)
Fig. 156, 4a-d. $* P$. polonica (Temple), Dalmanitina Beds, Ashgill, Stawy, near Kagow, Holy Cross Mountains, Poland, $a$, ventral external mold, BMNH BB 29216, x3, b$, ventral internal mold, BMNH BB 30010, X3, $c$, holotype, dorsal internal mold, BMNH BB 30009, $X_{3}$, d, latex cast of dorsal internal mold, BMNH BB 29216, X3 (new).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Ordovician (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Relatively wide outline, planoconvex profile, with anterior fold, sulcus, finely costellate ornament, small pseudodeltidium, large chilidium, short, widely divergent dental plates, poorly impressed small ventral muscle field, small, short but widely divergent socket ridges, small, poorly impressed dorsal muscle field with no septa, although pair of short transmuscle ridges sometimes present
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Glyptomenidae
Formal Genus Name and Reference:
Paromalomena RONG, 1984, p. 150
Type Species:
Platymena polonica TEMPLE, 1965, p. 407, OD
Images
(Click to enlarge in a new window)
Fig. 156, 4a-d. $* P$. polonica (Temple), Dalmanitina Beds, Ashgill, Stawy, near Kagow, Holy Cross Mountains, Poland, $a$, ventral external mold, BMNH BB 29216, x3, b$, ventral internal mold, BMNH BB 30010, X3, $c$, holotype, dorsal internal mold, BMNH BB 30009, $X_{3}$, d, latex cast of dorsal internal mold, BMNH BB 29216, X3 (new).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Ordovician (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Relatively wide outline, planoconvex profile, with anterior fold, sulcus, finely costellate ornament, small pseudodeltidium, large chilidium, short, widely divergent dental plates, poorly impressed small ventral muscle field, small, short but widely divergent socket ridges, small, poorly impressed dorsal muscle field with no septa, although pair of short transmuscle ridges sometimes present