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Phalacroma
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Uncertain
Family:
Phalacromidae
Formal Genus Name and Reference:
Phalacroma Hawle & CORDA, 1847, p. 43
Type Species:
* Battus bibullatus Barrande, 1846, p. 14, SD Raymond, 1913a, p. 139, lectotype (BarRande, 1852, pl. 49, fig. 6, SD ŠNAJDR, 1958, p. 74), ČC 244, NMP, Prague
Images
(Click to enlarge in a new window)
Fig. 240,1. *P. bibullatum (BARRANDE); Middle Cambrian (E. pusillus Zone), Czech Republic (Tyrovice, Bohemia); lectotype, exoskeleton, NM-CC 244, No. 1027, × 8.7 (Horny & Bastl, 1970, pl. 1, fig. 1).
Synonyms
Platagnostus
Geographic Distribution
Czech Republic, Eccaparadoxides pusillus Zone; France, Paradoxides beds; Russia (Siberia), T. fissus or P. hicksi to upper P. davidis Zones.
Age Range
Beginning Stage in Treatise Usage:
Middle Cambrian
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
Middle Cambrian
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Cephalon almost totally effaced, having barely perceptible border and axial furrows that are defined only posteriorly, basal lobes effaced. Pygidium with very wide (tr.) axis extending to narrow (sag.) posterior border, nonspinose.
References
Hawle, Ignaz, \& A. J. C. Corda. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen Koeniglichen Boehmischen Gesellschaft der Wissenschaften. J. G. Calve. Prague. 176 p., 7 pl .
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Uncertain
Family:
Phalacromidae
Formal Genus Name and Reference:
Phalacroma Hawle & CORDA, 1847, p. 43
Type Species:
* Battus bibullatus Barrande, 1846, p. 14, SD Raymond, 1913a, p. 139, lectotype (BarRande, 1852, pl. 49, fig. 6, SD ŠNAJDR, 1958, p. 74), ČC 244, NMP, Prague
Images
(Click to enlarge in a new window)
Fig. 240,1. *P. bibullatum (BARRANDE); Middle Cambrian (E. pusillus Zone), Czech Republic (Tyrovice, Bohemia); lectotype, exoskeleton, NM-CC 244, No. 1027, × 8.7 (Horny & Bastl, 1970, pl. 1, fig. 1).
Synonyms
Platagnostus
Geographic Distribution
Czech Republic, Eccaparadoxides pusillus Zone; France, Paradoxides beds; Russia (Siberia), T. fissus or P. hicksi to upper P. davidis Zones.
Age Range
Beginning Stage in Treatise Usage:
Middle Cambrian
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
Middle Cambrian
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Cephalon almost totally effaced, having barely perceptible border and axial furrows that are defined only posteriorly, basal lobes effaced. Pygidium with very wide (tr.) axis extending to narrow (sag.) posterior border, nonspinose.
References
Hawle, Ignaz, \& A. J. C. Corda. 1847. Prodrom einer Monographie der böhmischen Trilobiten. Abhandlungen Koeniglichen Boehmischen Gesellschaft der Wissenschaften. J. G. Calve. Prague. 176 p., 7 pl .