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Parallelodon
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Arcoida
Superfamily:
Arcacea
Family:
Parallelodontidae
Subfamily:
Parallelodontinae
Formal Genus Name and Reference:
Parallelodon Meek & WORTHEN, 1866 [pro Macrodon (Lycett) Buckman, 1845 (non Schinz, 1822, nec Müller, 1842)=Macrodus Beushausen 1895 (obj.) (non Gray, 1864)]
Type Species:
Macrodon rugosus BUCKMAN, 1845
Images
(Click to enlarge in a new window)
Fig. C6,1a. *P. rugosus (Buckman), M.Jur., Eng., RV int., X0.4, -- Fig. C6,1b. P. bipartitum (Roemer), U.Jur., Belg., LV ext., X1 (20). [=Glyptarea HICKS, 1873, p. 48 (type, G. primaeva; SO NEWELL, herE1n).]
Synonyms
Prorhynchus, Beushausenia, ?Sufia, ?Mnataia, Palaeocucullaea
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.(Tremadoc.)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
U.Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Shell more than twice as long as high, some species posteriorly alate, umbones approximately 0.25 of shell length behind anterior extremity, smooth or ornamented with radial ribs, ligament areas broad, with several chevron grooves converging toward beaks, with or without anterior myophoric buttress, hinge long and straight
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Arcoida
Superfamily:
Arcacea
Family:
Parallelodontidae
Subfamily:
Parallelodontinae
Formal Genus Name and Reference:
Parallelodon Meek & WORTHEN, 1866 [pro Macrodon (Lycett) Buckman, 1845 (non Schinz, 1822, nec Müller, 1842)=Macrodus Beushausen 1895 (obj.) (non Gray, 1864)]
Type Species:
Macrodon rugosus BUCKMAN, 1845
Images
(Click to enlarge in a new window)
Fig. C6,1a. *P. rugosus (Buckman), M.Jur., Eng., RV int., X0.4, -- Fig. C6,1b. P. bipartitum (Roemer), U.Jur., Belg., LV ext., X1 (20). [=Glyptarea HICKS, 1873, p. 48 (type, G. primaeva; SO NEWELL, herE1n).]
Synonyms
Prorhynchus, Beushausenia, ?Sufia, ?Mnataia, Palaeocucullaea
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.(Tremadoc.)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
U.Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Shell more than twice as long as high, some species posteriorly alate, umbones approximately 0.25 of shell length behind anterior extremity, smooth or ornamented with radial ribs, ligament areas broad, with several chevron grooves converging toward beaks, with or without anterior myophoric buttress, hinge long and straight