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Pseudovermiporella
Classification
Phylum:
Trace Fossils and Problematica
Class:
Microproblematica
Formal Genus Name and Reference:
Pseudovermiporella ELLIOTT, 1958, p. 419
Type Species:
*P. sodalica, OD
Images
(Click to enlarge in a new window)
Fig. 99,9. *P. sodalica, Arabia, transv. sec. of small individual, X50 (Elliott, 1958)
Synonyms
Geographic Distribution
Sil., Perm., Eu. (Yugosl.-USSR)-Asia (Arabra-N.Iraq-?Japan)-?N. Afr.('Tunisia)
Age Range
Beginning Stage in Treatise Usage:
Sil., Perm.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil., Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Small calcitic tubes, diameter up to 1.4 mm, meandriform, forming tangled coils or loops; tubes consisting of an innermost, thin, dark compact-walled tube and an outer tubular layer pierced by numerous radial pores 0.03 to 0.04 mm in diameter; pores approximately at right angles to surface and forming distinct regular mesh, which has a dark calcareous layer on its inner surface, tubes showing creeping habit, occurring free or attached to other ones or to shell fragments. [Tentatively considered as unusual primitive dasyclad alga.]
References
Museum or Author Information
Classification
Phylum:
Trace Fossils and Problematica
Class:
Microproblematica
Formal Genus Name and Reference:
Pseudovermiporella ELLIOTT, 1958, p. 419
Type Species:
*P. sodalica, OD
Images
(Click to enlarge in a new window)
Fig. 99,9. *P. sodalica, Arabia, transv. sec. of small individual, X50 (Elliott, 1958)
Synonyms
Geographic Distribution
Sil., Perm., Eu. (Yugosl.-USSR)-Asia (Arabra-N.Iraq-?Japan)-?N. Afr.('Tunisia)
Age Range
Beginning Stage in Treatise Usage:
Sil., Perm.
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Sil., Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Small calcitic tubes, diameter up to 1.4 mm, meandriform, forming tangled coils or loops; tubes consisting of an innermost, thin, dark compact-walled tube and an outer tubular layer pierced by numerous radial pores 0.03 to 0.04 mm in diameter; pores approximately at right angles to surface and forming distinct regular mesh, which has a dark calcareous layer on its inner surface, tubes showing creeping habit, occurring free or attached to other ones or to shell fragments. [Tentatively considered as unusual primitive dasyclad alga.]