360 Early Silurian Crinoids from the Lower Clinton Group, Western NY State

Early Silurian (Llandovery) Crinoids from the Lower Clinton Group, Western New York State - BAP #360 Early Silurian (Llandovery) crinoids have been poorly known. The present paper describes 26 species and six unassigned columnal taxa of Early Silurian crinoids on the basis of new and well preserved fossils from the lower Clinton Group of western New York. The new material, comprising eighteen genera, and unclassified skeletal material, spans the late middle Llandovery to the latest Llandovery and has been derived from several lithostratigraphic units. The Reynales Formation (Aeronian) contains the following new genera: Dynamocrinus, Thaerocrinus, Haptocrinus, and Prolixocrinus; new species include Dynamocrinus robustus, Thaerocrinus crenatus, Haptocrinus calvatus, Prolixocrinus nodocaudis, and Macrostylocrinus sp. Two species of disparid Eomxelodacrinu,. E. sparwus Eckert and E. uniformis Eckert, and one unusual camerate, Stipalocrinus hulveri Eckert and Brett, have been previous