Cnemidopyge is a genus of trilobites that lived during the Ordovician. Like all Raphiophorids it is blind, with a cephalon that is subtriangular to subsemicircular, carrying genal spines and a forward directed rapier-like spine on the central raised area (or glabella), with the front of the glabella inflated and the natural fracture lines (or sutures) of the cephalon coinciding with its margin. It may be easily distinguished from other raphiophorids by the rectangular thorax with 6 segments, where other genera have a different number of segments and segments change in width over the length of the thorax.[1] Uniquely in this genus, the inner pleural region of the frontal segment is enlarged.[2] Also the axis (or rhachis) and pleural fields of the pygidium are strongly segmented.[1]
C. nuda (Muchison, 1839) (type) synonymsTrinucleus nudus, Ampyx nudus, A. latus
Referencesedit
^ abHughes, C.P. (1969). "The Ordovician Trilobite Faunas of the Builth-Llandrindod Inlier Central Wales" [Part 1]. Bulletin of the British Museum (Natural History), Geology. 18: 41–103.
^Whittington, H. B. et al. (1997) Treatise on Invertebrate Paleontology. Part O, Revised, Volume 1 – Trilobita – Introduction, Order Agnostida, Order Redlichiida.
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cnemidopyge, genus, trilobites, that, lived, during, ordovician, like, raphiophorids, blind, with, cephalon, that, subtriangular, subsemicircular, carrying, genal, spines, forward, directed, rapier, like, spine, central, raised, area, glabella, with, front, gl. Cnemidopyge is a genus of trilobites that lived during the Ordovician Like all Raphiophorids it is blind with a cephalon that is subtriangular to subsemicircular carrying genal spines and a forward directed rapier like spine on the central raised area or glabella with the front of the glabella inflated and the natural fracture lines or sutures of the cephalon coinciding with its margin It may be easily distinguished from other raphiophorids by the rectangular thorax with 6 segments where other genera have a different number of segments and segments change in width over the length of the thorax 1 Uniquely in this genus the inner pleural region of the frontal segment is enlarged 2 Also the axis or rhachis and pleural fields of the pygidium are strongly segmented 1 CnemidopygeTemporal range Ordovician PreꞒ Ꞓ O S D C P T J K Pg N Cnemidopyge nuda Wales Scientific classification Domain Eukaryota Kingdom Animalia Phylum Arthropoda Class Trilobita Order Asaphida Family Raphiophoridae Genus CnemidopygeWhittard 1955 Species C nuda Muchison 1839 type synonyms Trinucleus nudus Ampyx nudus A latusReferences edit a b Hughes C P 1969 The Ordovician Trilobite Faunas of the Builth Llandrindod Inlier Central Wales Part 1 Bulletin of the British Museum Natural History Geology 18 41 103 Whittington H B et al 1997 Treatise on Invertebrate Paleontology Part O Revised Volume 1 Trilobita Introduction Order Agnostida Order Redlichiida nbsp This Asaphida related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Cnemidopyge amp oldid 1171769328, wikipedia, wiki, book, books, library,
