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Rosselia
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Rosselia DAHMER, 1937, p. 532
Type Species:
*R. socialis, M
Images
(Click to enlarge in a new window)
Fig. 63,2. *R. socialis, L.Dev.(low. Taunus Quartzite), Ger., 2a, opening, ×0.5, 2b, upper end of dwelling burrow with opening, ×0.5 (Dahmer, 1937)
Synonyms
Geographic Distribution
L.Cam., Asia(Pak.), L.Dev., Eu.(Ger.), ?Penn., USA(Okla.), ?Jur., Eu.(Ger.), U.Cret., N.Am.(USA, Utah)
Age Range
Beginning Stage in Treatise Usage:
L.Cam., L.Dev.
Beginning International Stage:
Fortunian
Fraction Up In Beginning Stage:
0
Beginning Date:
538.8
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Cylindrical pencil-thick burrows, commonly oblique (30° or more) to bedding, lower end not observed, opening expanded and filled with concentric layers of matrix which as a rule are strongly weathered. [According to DAHMER (1937, p. 533), dwelling burrow; interpreted by SEILACHER (1955, p. 389) as feeding burrow, recently regarded by him (1969, p. 122) as a junior synonym of Asterosoma VON OTTO, 1854 (see Fig. 25,1).]
References
Museum or Author Information
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Rosselia DAHMER, 1937, p. 532
Type Species:
*R. socialis, M
Images
(Click to enlarge in a new window)
Fig. 63,2. *R. socialis, L.Dev.(low. Taunus Quartzite), Ger., 2a, opening, ×0.5, 2b, upper end of dwelling burrow with opening, ×0.5 (Dahmer, 1937)
Synonyms
Geographic Distribution
L.Cam., Asia(Pak.), L.Dev., Eu.(Ger.), ?Penn., USA(Okla.), ?Jur., Eu.(Ger.), U.Cret., N.Am.(USA, Utah)
Age Range
Beginning Stage in Treatise Usage:
L.Cam., L.Dev.
Beginning International Stage:
Fortunian
Fraction Up In Beginning Stage:
0
Beginning Date:
538.8
Ending Stage in Treatise Usage:
U.Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Cylindrical pencil-thick burrows, commonly oblique (30° or more) to bedding, lower end not observed, opening expanded and filled with concentric layers of matrix which as a rule are strongly weathered. [According to DAHMER (1937, p. 533), dwelling burrow; interpreted by SEILACHER (1955, p. 389) as feeding burrow, recently regarded by him (1969, p. 122) as a junior synonym of Asterosoma VON OTTO, 1854 (see Fig. 25,1).]