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Ligonodina
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Conodontophorida - SuperFamily Unknown
Family:
SuperFamily Unknown - Family Unknown
Formal Genus Name and Reference:
Ligonodina BASSLER, 1925, p. 218
Type Species:
L. pectinata, OD
Images
(Click to enlarge in a new window)
Fig. 119, 6. *L. pectinata, lectotype, Rhinestreet Sh., USA (N.Y.), Sc element, lat. view, X20 (Huddle, 1968).
Synonyms
Geographic Distribution
N.Am. (N.Y.)
Age Range
Beginning Stage in Treatise Usage:
U.Dev. (Frasn.)
Beginning International Stage:
Frasnian
Fraction Up In Beginning Stage:
0
Beginning Date:
378.9
Ending Stage in Treatise Usage:
U.Dev. (Frasn.)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Sc element bipennate, with anterolateral process and its denticles flexed posteriorly, denticles discrete.
References
Bassler, R. S., 1925, Classification and stratigraphic use of the conodonts: Geol. Soc. Am. Bull., v. 36, p. 218-220.
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Conodontophorida - SuperFamily Unknown
Family:
SuperFamily Unknown - Family Unknown
Formal Genus Name and Reference:
Ligonodina BASSLER, 1925, p. 218
Type Species:
L. pectinata, OD
Images
(Click to enlarge in a new window)
Fig. 119, 6. *L. pectinata, lectotype, Rhinestreet Sh., USA (N.Y.), Sc element, lat. view, X20 (Huddle, 1968).
Synonyms
Geographic Distribution
N.Am. (N.Y.)
Age Range
Beginning Stage in Treatise Usage:
U.Dev. (Frasn.)
Beginning International Stage:
Frasnian
Fraction Up In Beginning Stage:
0
Beginning Date:
378.9
Ending Stage in Treatise Usage:
U.Dev. (Frasn.)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Sc element bipennate, with anterolateral process and its denticles flexed posteriorly, denticles discrete.
References
Bassler, R. S., 1925, Classification and stratigraphic use of the conodonts: Geol. Soc. Am. Bull., v. 36, p. 218-220.