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Ancyrodella
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Polygnathidae
Formal Genus Name and Reference:
Ancyrodella Ulrich & BASSLER, 1926, p. 48
Type Species:
A. nodosa, OD
Images
(Click to enlarge in a new window)
Fig. 111, 2. A. rotundiloba alata Glenister & Klapper, U.Dev. (L. Mesotaxis asymmetrica Z., Snyder Creek Sh.), USA (Mo.), Pa element, upper view, X27 (Klapper, n).
Synonyms
Ancyropenta
Geographic Distribution
Eu.-N.Afr.-Asia-N.Am.-Australia
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
Pa element modified stelliplanate with posterior lobe and two anteriorly directed lobes, Sa element alate with denticulate posterior process. [Reconstruction: KLAPPER & PHILIP, 1972.]
References
Ulrich, E. O., , & Bassler, R. S., 1926, A classification of the toothlike fossils, conodonts, with descriptions of American Devonian and Mississippian species: U.S. Nat. Mus. Proc., v. 68, art. 12, 63 p., 5 text-fig., 11 pl .
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Polygnathidae
Formal Genus Name and Reference:
Ancyrodella Ulrich & BASSLER, 1926, p. 48
Type Species:
A. nodosa, OD
Images
(Click to enlarge in a new window)
Fig. 111, 2. A. rotundiloba alata Glenister & Klapper, U.Dev. (L. Mesotaxis asymmetrica Z., Snyder Creek Sh.), USA (Mo.), Pa element, upper view, X27 (Klapper, n).
Synonyms
Ancyropenta
Geographic Distribution
Eu.-N.Afr.-Asia-N.Am.-Australia
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
Pa element modified stelliplanate with posterior lobe and two anteriorly directed lobes, Sa element alate with denticulate posterior process. [Reconstruction: KLAPPER & PHILIP, 1972.]
References
Ulrich, E. O., , & Bassler, R. S., 1926, A classification of the toothlike fossils, conodonts, with descriptions of American Devonian and Mississippian species: U.S. Nat. Mus. Proc., v. 68, art. 12, 63 p., 5 text-fig., 11 pl .