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Megalodon
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Megalodontacea
Family:
Megalodontidae
Formal Genus Name and Reference:
Megalodon J. de C. SOWERBY, 1827, p. 131
Type Species:
M. cucullatus, M
Images
(Click to enlarge in a new window)
Fig. E215,4. *M. (M.) cucullatus Sowerby, Dev., Paffrath, Ger., LV int., showing dentition, X1 (379)
Synonyms
Megaladon, Megalodonta, Megalodus, Eumegalodon
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Dev.
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Trias. (Rhaet.)
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Shell medium-sized to large, subtrigonal or ovate, gibbose, beaks anterior, strongly prosogyrous, hinge plate very massive, cardinal teeth varying in number, from 1 or 2 in LV and 1 to 3 in RV, owing to suppression or duplication of elements of dentition, posterior adductor scar on slightly raised platform, surface smooth or con centrically rugose (Dechaseaux in Piveteau, 1952, p. 293, 333)
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Megalodontacea
Family:
Megalodontidae
Formal Genus Name and Reference:
Megalodon J. de C. SOWERBY, 1827, p. 131
Type Species:
M. cucullatus, M
Images
(Click to enlarge in a new window)
Fig. E215,4. *M. (M.) cucullatus Sowerby, Dev., Paffrath, Ger., LV int., showing dentition, X1 (379)
Synonyms
Megaladon, Megalodonta, Megalodus, Eumegalodon
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Dev.
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Trias. (Rhaet.)
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Shell medium-sized to large, subtrigonal or ovate, gibbose, beaks anterior, strongly prosogyrous, hinge plate very massive, cardinal teeth varying in number, from 1 or 2 in LV and 1 to 3 in RV, owing to suppression or duplication of elements of dentition, posterior adductor scar on slightly raised platform, surface smooth or con centrically rugose (Dechaseaux in Piveteau, 1952, p. 293, 333)