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Trinucleus
Classification
Phylum:
Arthropoda
Subphylum:
Trilobitomorpha
Class:
Trilobita
Order:
Ptychopariida
Suborder:
Trinucleina
Family:
Trinucleidae
Subfamily:
Trinucleinae
Formal Genus Name and Reference:
Trinucleus Murchison, 1839 [non Link, 1807 (ICZN Op. 505)]
Type Species:
T. fimbriatus, SD VOGDES, 1890
Images
(Click to enlarge in a new window)
Fig. 323, 5. *T. fimbriatus, M.Ord., Wales, exoskel., x2.7 (496n).
Synonyms
Edgellia, Botrioides
Geographic Distribution
Br.I.-Norway-Swed.
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:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Median and posterior glabellar furrows deepest and longest, Pygidium strongly transverse, with breadth 3 or 4 times length (sag.)
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Trilobitomorpha
Class:
Trilobita
Order:
Ptychopariida
Suborder:
Trinucleina
Family:
Trinucleidae
Subfamily:
Trinucleinae
Formal Genus Name and Reference:
Trinucleus Murchison, 1839 [non Link, 1807 (ICZN Op. 505)]
Type Species:
T. fimbriatus, SD VOGDES, 1890
Images
(Click to enlarge in a new window)
Fig. 323, 5. *T. fimbriatus, M.Ord., Wales, exoskel., x2.7 (496n).
Synonyms
Edgellia, Botrioides
Geographic Distribution
Br.I.-Norway-Swed.
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:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Median and posterior glabellar furrows deepest and longest, Pygidium strongly transverse, with breadth 3 or 4 times length (sag.)