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Ectillaenus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Illaenacea
Family:
Illaenidae
Formal Genus Name and Reference:
Ectillaenus Salter, 1867
Type Species:
Illaenus perovalis MURCHISON, 1839
Images
(Click to enlarge in a new window)
Fig. 282, 4. E. katzeri (Barrande), x0.7 (414)
Synonyms
Wossekia
Geographic Distribution
Bohemia, Poland, Bornholm, southern Sweden, England
Age Range
Beginning Stage in Treatise Usage:
Ord.(Llanvirn.)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Ord.(Ashgill.)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Thoracic segments 10, Eyes very small, commonly at about transverse mid-line of cephalon, or absent, genal corners rounded, Anterior wings of the hypostoma broad (tr.), quadrangular, Pygidium about equal in size to cephalon, semicircular to subtriangular outline, as in Illaents
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Ptychopariida
Superfamily:
Illaenacea
Family:
Illaenidae
Formal Genus Name and Reference:
Ectillaenus Salter, 1867
Type Species:
Illaenus perovalis MURCHISON, 1839
Images
(Click to enlarge in a new window)
Fig. 282, 4. E. katzeri (Barrande), x0.7 (414)
Synonyms
Wossekia
Geographic Distribution
Bohemia, Poland, Bornholm, southern Sweden, England
Age Range
Beginning Stage in Treatise Usage:
Ord.(Llanvirn.)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Ord.(Ashgill.)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Thoracic segments 10, Eyes very small, commonly at about transverse mid-line of cephalon, or absent, genal corners rounded, Anterior wings of the hypostoma broad (tr.), quadrangular, Pygidium about equal in size to cephalon, semicircular to subtriangular outline, as in Illaents