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Otarion
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Proetacea
Family:
Otarionidea
Formal Genus Name and Reference:
Otarion ZENKER, 1833
Type Species:
O. diffractum
Images
(Click to enlarge in a new window)
Fig. 309, 4a. *O. diffractum, Sil. (e Zone), Czech., exoskel., x2 (3)., Fig. 309, 4b-d. O. ceratophthalmus (Goldfuss), M.Dev., Ger.(Eifel), 4b, exoskel. (reconstr.), x1.7, 4 c, d, hypostoma, ventral, lateral, x8 (460*).
Synonyms
Cyphaspis, Conoparia, ?Goniopletura, ?Harpidella, Nouákaspis
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
U.Dev.
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
0
Ending Date:
359.3
Description
Cephalon with narrow border and distinct border furrow, genal spines long, anterior and lateral margins even, Sixth ring of thoracic axis in almost all species stronger than others bearing long backward-curved spine, Pygidial axis with 5 to 7 rings, Hypostoma resembling that of Proetidae but with complete median furrow separating anterior and posterior lobes, anterior border furrow reduced, Surface granulose
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Proetacea
Family:
Otarionidea
Formal Genus Name and Reference:
Otarion ZENKER, 1833
Type Species:
O. diffractum
Images
(Click to enlarge in a new window)
Fig. 309, 4a. *O. diffractum, Sil. (e Zone), Czech., exoskel., x2 (3)., Fig. 309, 4b-d. O. ceratophthalmus (Goldfuss), M.Dev., Ger.(Eifel), 4b, exoskel. (reconstr.), x1.7, 4 c, d, hypostoma, ventral, lateral, x8 (460*).
Synonyms
Cyphaspis, Conoparia, ?Goniopletura, ?Harpidella, Nouákaspis
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
U.Dev.
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
0
Ending Date:
359.3
Description
Cephalon with narrow border and distinct border furrow, genal spines long, anterior and lateral margins even, Sixth ring of thoracic axis in almost all species stronger than others bearing long backward-curved spine, Pygidial axis with 5 to 7 rings, Hypostoma resembling that of Proetidae but with complete median furrow separating anterior and posterior lobes, anterior border furrow reduced, Surface granulose