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Sweetognathus
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Anchignathodontidae
Formal Genus Name and Reference:
Sweetognathus CLARK, 1972a, p. 155
Type Species:
* Spathognathodus whitei RHODES, 1963, p. 404; 00)
Images
(Click to enlarge in a new window)
Fig. 114, 3. *S. whitei (RHODES), L.Perm., USA (Nev.); upper view, X65 (Clark, n).
Synonyms
Geographic Distribution
N.Am.-S.Am.-Asia.
Age Range
Beginning Stage in Treatise Usage:
L.Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Apparatus probably unimembrate; pectiniform element scaphate with short free anterior blade in young forms; blade approaching length of total unit in older forms. Faint rostrum in juveniles, developing to heavy rostrum and carina at maturity.
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Anchignathodontidae
Formal Genus Name and Reference:
Sweetognathus CLARK, 1972a, p. 155
Type Species:
* Spathognathodus whitei RHODES, 1963, p. 404; 00)
Images
(Click to enlarge in a new window)
Fig. 114, 3. *S. whitei (RHODES), L.Perm., USA (Nev.); upper view, X65 (Clark, n).
Synonyms
Geographic Distribution
N.Am.-S.Am.-Asia.
Age Range
Beginning Stage in Treatise Usage:
L.Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Apparatus probably unimembrate; pectiniform element scaphate with short free anterior blade in young forms; blade approaching length of total unit in older forms. Faint rostrum in juveniles, developing to heavy rostrum and carina at maturity.