Welcome to the Tracefossils subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Helicodromites
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Helicodromites BERGER, 1957, p. 540
Type Species:
*H. mobilis, M
Images
(Click to enlarge in a new window)
Fig. 41,2. *H. mobilis, X0.7 (Berger, 1957)
Synonyms
Geographic Distribution
Eu.(S.Ger.)
Age Range
Beginning Stage in Treatise Usage:
Oligo.(Rupel.)
Beginning International Stage:
Rupelian
Fraction Up In Beginning Stage:
0
Beginning Date:
33.9
Ending Stage in Treatise Usage:
Oligo.(Rupel.)
Ending International Stage:
Rupelian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Smooth screw-shaped burrows, horizontal, diameter of tunnels about 2 mm; interval between spiral turns about 5 mm. [For discussion of similar Recent traces from marine and terrestrial sediments, see A.H. MULLER (197Ia).]
References
Museum or Author Information
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Helicodromites BERGER, 1957, p. 540
Type Species:
*H. mobilis, M
Images
(Click to enlarge in a new window)
Fig. 41,2. *H. mobilis, X0.7 (Berger, 1957)
Synonyms
Geographic Distribution
Eu.(S.Ger.)
Age Range
Beginning Stage in Treatise Usage:
Oligo.(Rupel.)
Beginning International Stage:
Rupelian
Fraction Up In Beginning Stage:
0
Beginning Date:
33.9
Ending Stage in Treatise Usage:
Oligo.(Rupel.)
Ending International Stage:
Rupelian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Smooth screw-shaped burrows, horizontal, diameter of tunnels about 2 mm; interval between spiral turns about 5 mm. [For discussion of similar Recent traces from marine and terrestrial sediments, see A.H. MULLER (197Ia).]