New fossils from the Canadian-Chazyan (Ordovician) hiatus in Tennessee
A new Lower Ordovician fauna from marine sediments deposited in a depression on the unconformity of the Canadian-Chazyan hiatus in Tennessee is described. Most abundant are the remains of Chasmataspis laurencii, n. genus, n. species, a merostomaceous arachnomoprh for which the new order Chasmataspida and new family Chamataspidae are required; a new bivalved crustacean, Douglasocaris collinsi, n. genus, n. species, shows sufficient affinities to the Phyllocarida to be tentatively assigned to this order, however, a new family, Douglasocaridae is required to accommodate it. A trail, problematic casting, and a new foliaceous ctenophoran-like organism, Cestites mirabilis, n. form-genus and n. species, complete the assemblage.
"A new Lower Ordovician fauna from marine sediments deposited in a depression on the unconformity of the Canadian-Chazyan hiatus in Tennessee is described. Most abundant are the remains of Chasmataspis laurencii, n. genus, n. species, a merostomaceous arachnomoprh for which the new order Chasmataspida and new family Chamataspidae are required; a new bivalved crustacean, Douglasocaris collinsi, n. genus, n. species, shows sufficient affinities to the Phyllocarida to be tentatively assigned to this order, however, a new family, Douglasocaridae is required to accommodate it. A trail, problematic casting, and a new foliaceous ctenophoran-like organism, Cestites mirabilis, n. form-genus and n. species, complete the assemblage."@en
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