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Liostracina
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Emmrichellacea
Family:
Liostracinidae
Formal Genus Name and Reference:
Liostracina MONKE, 1903
Type Species:
L. krausei
Images
(Click to enlarge in a new window)
Fig. 186, 2. *L. krausei, China, 2 a, cran., x5.5, 2 b, pyg., x7 (433*)
Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Glabella narrow, preglabellar area longer and fixigenae wider than in Liostracinoides. Pygidium short, wide.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Emmrichellacea
Family:
Liostracinidae
Formal Genus Name and Reference:
Liostracina MONKE, 1903
Type Species:
L. krausei
Images
(Click to enlarge in a new window)
Fig. 186, 2. *L. krausei, China, 2 a, cran., x5.5, 2 b, pyg., x7 (433*)
Synonyms
Geographic Distribution
E.Asia
Age Range
Beginning Stage in Treatise Usage:
M.Cam.
Beginning International Stage:
Cambrian Stage 4
Fraction Up In Beginning Stage:
0
Beginning Date:
512.3
Ending Stage in Treatise Usage:
M.Cam.
Ending International Stage:
Guzhangian
Fraction Up In Ending Stage:
0
Ending Date:
498.75
Description
Glabella narrow, preglabellar area longer and fixigenae wider than in Liostracinoides. Pygidium short, wide.