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Pseudomera
Classification
Phylum:
Arthropoda
Subphylum:
Trilobitomorpha
Class:
Trilobita
Order:
Phacopida
Suborder:
Cheirurina
Family:
Pliomeridae
Subfamily:
Pliomerinae
Formal Genus Name and Reference:
Pseudomera Holliday, 1942, *Amphion barrandei BILLINGS, 1865
Type Species:
Amphion barrandei BILLINGS, 1865
Images
(Click to enlarge in a new window)
Fig. 345, 3. *P. barrandei (Billings), Newf., 3 a, cran. (holotype), x2, 3b, pyg. (paratype), x1.35 (408*).
Synonyms
Geographic Distribution
Can.(Newf.), Greenl.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Differs from Pliomera in lacking denticulations on anterior cephalic border and in having proparian sutures, anterior ( 3p ) lateral glabellar furrows not reaching anterior border furrow, fixigenae without anterior areas, anterior border furrow with deep mesial pit, eyes moderately large, submedian, long palpebro-ocular ridges. Pygidium with 5 axial rings, long terminal axial piece with lunate furrow, and pleurae ending in long free spines.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Trilobitomorpha
Class:
Trilobita
Order:
Phacopida
Suborder:
Cheirurina
Family:
Pliomeridae
Subfamily:
Pliomerinae
Formal Genus Name and Reference:
Pseudomera Holliday, 1942, *Amphion barrandei BILLINGS, 1865
Type Species:
Amphion barrandei BILLINGS, 1865
Images
(Click to enlarge in a new window)
Fig. 345, 3. *P. barrandei (Billings), Newf., 3 a, cran. (holotype), x2, 3b, pyg. (paratype), x1.35 (408*).
Synonyms
Geographic Distribution
Can.(Newf.), Greenl.
Age Range
Beginning Stage in Treatise Usage:
L.Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Ord.
Ending International Stage:
Floian
Fraction Up In Ending Stage:
100
Ending Date:
471.26
Description
Differs from Pliomera in lacking denticulations on anterior cephalic border and in having proparian sutures, anterior ( 3p ) lateral glabellar furrows not reaching anterior border furrow, fixigenae without anterior areas, anterior border furrow with deep mesial pit, eyes moderately large, submedian, long palpebro-ocular ridges. Pygidium with 5 axial rings, long terminal axial piece with lunate furrow, and pleurae ending in long free spines.