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Palmichnium
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Palmichnium RICHTER, 1954, p. 267
Type Species:
*P. palmatum, OD
Images
(Click to enlarge in a new window)
Fig. 57,5. *P. palmatum, L.Dev., Ger., ca. X0.2 (Richter, 1954)
Synonyms
Geographic Distribution
L.Dev., Eu.(Ger.), ?L.Carb.(Kulm), Eu.(Ger.)
Age Range
Beginning Stage in Treatise Usage:
L.Dev., ?L.Carb.(Kulm)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Dev., ?L.Carb.(Kulm)
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Large, plantlike track, about 11 cm wide, opposed symmetrical rows of leg impressions; median keel, divided at regular intervals, bordered by longitudinally directed club-shaped impressions distinctly set off toward interior, but indistinctly toward exterior. [Crawling track; made by arthropod, probably eurypterid; a similar track from Devonian of Antarctica is Beaconichnus antarcticus GEVERS, 1971 (see GEVERS et al., 1971, p. 87, 93).]
References
Museum or Author Information
Classification
Phylum:
Trace Fossils and Problematica
Class:
Trace Fossils
Formal Genus Name and Reference:
Palmichnium RICHTER, 1954, p. 267
Type Species:
*P. palmatum, OD
Images
(Click to enlarge in a new window)
Fig. 57,5. *P. palmatum, L.Dev., Ger., ca. X0.2 (Richter, 1954)
Synonyms
Geographic Distribution
L.Dev., Eu.(Ger.), ?L.Carb.(Kulm), Eu.(Ger.)
Age Range
Beginning Stage in Treatise Usage:
L.Dev., ?L.Carb.(Kulm)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
L.Dev., ?L.Carb.(Kulm)
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
100
Ending Date:
323.4
Description
Large, plantlike track, about 11 cm wide, opposed symmetrical rows of leg impressions; median keel, divided at regular intervals, bordered by longitudinally directed club-shaped impressions distinctly set off toward interior, but indistinctly toward exterior. [Crawling track; made by arthropod, probably eurypterid; a similar track from Devonian of Antarctica is Beaconichnus antarcticus GEVERS, 1971 (see GEVERS et al., 1971, p. 87, 93).]