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Fraena
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Fraena ROUAULT, 1850, p. 729
Type Species:
*F. Sancti-Hilairei, SD PÉNEAU, 1946, p. 77
Images
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Synonyms
Geographic Distribution
Eu.(France)
Age Range
Beginning Stage in Treatise Usage:
Ord
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
Ord
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Rarely used name for simple trails, unilobate as well as particularly bilobate, some smooth, some striated longitudinally or transversely.. [ROUAULT combined in "genus" seven "species" which were subsequendy placed in Cruziana, Rouaultia (type species, Fraena lyelli), and Rusophycus; DE TROMELIN & LEBESCONTE (1876, p. 627), MATTHEW (1891, p. 158), PENEAU (1946, p. 77), and other authors recommended restricting name Fraena to simple smooth unilobate trails of type of first "species" described by ROUAULT, F. sanctihilairei; see also Palaeotenia guilleri CRIE, 1883.]
References
Museum or Author Information
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Fraena ROUAULT, 1850, p. 729
Type Species:
*F. Sancti-Hilairei, SD PÉNEAU, 1946, p. 77
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
Eu.(France)
Age Range
Beginning Stage in Treatise Usage:
Ord
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
Ord
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Rarely used name for simple trails, unilobate as well as particularly bilobate, some smooth, some striated longitudinally or transversely.. [ROUAULT combined in "genus" seven "species" which were subsequendy placed in Cruziana, Rouaultia (type species, Fraena lyelli), and Rusophycus; DE TROMELIN & LEBESCONTE (1876, p. 627), MATTHEW (1891, p. 158), PENEAU (1946, p. 77), and other authors recommended restricting name Fraena to simple smooth unilobate trails of type of first "species" described by ROUAULT, F. sanctihilairei; see also Palaeotenia guilleri CRIE, 1883.]