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Polylophodonta
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Polygnathidae
Formal Genus Name and Reference:
Polylophodonta Branson & MEHL, 1934a, p. 242
Type Species:
Polygnathus gyratilineatus Holmes, 1928, p. 31, OD, =Polygnathus pergyratus Holmes in BUTTS, 1926, p. 160
Images
(Click to enlarge in a new window)
Fic. 113, 3. P. confluens (Ulrich & Bassler), L. Palmatolepis marginifera Z. (Virgin Hills F.), Australia (W.Australia), Pa element, upper view, × 30 (Glenister & Klapper, 1966).
Synonyms
Polygnathus pergyratus
Geographic Distribution
Eu.-N.Am.-Australia
Age Range
Beginning Stage in Treatise Usage:
U.Dev. (Famenn.)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
U.Dev. (Famenn.)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Pa element like that of Polygnathus (especially P. nodocostatus group) but platform upper surface with strong concentric arrangement of ridges or rows of nodes. [Only Pa element is recognized.]
References
Museum or Author Information
Classification
Phylum:
Conodonta
Class:
Conodonta
Order:
Conodontophorida
Superfamily:
Polygnathacea
Family:
Polygnathidae
Formal Genus Name and Reference:
Polylophodonta Branson & MEHL, 1934a, p. 242
Type Species:
Polygnathus gyratilineatus Holmes, 1928, p. 31, OD, =Polygnathus pergyratus Holmes in BUTTS, 1926, p. 160
Images
(Click to enlarge in a new window)
Fic. 113, 3. P. confluens (Ulrich & Bassler), L. Palmatolepis marginifera Z. (Virgin Hills F.), Australia (W.Australia), Pa element, upper view, × 30 (Glenister & Klapper, 1966).
Synonyms
Polygnathus pergyratus
Geographic Distribution
Eu.-N.Am.-Australia
Age Range
Beginning Stage in Treatise Usage:
U.Dev. (Famenn.)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
U.Dev. (Famenn.)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Pa element like that of Polygnathus (especially P. nodocostatus group) but platform upper surface with strong concentric arrangement of ridges or rows of nodes. [Only Pa element is recognized.]