Northeastern (46th Annual) and North-Central (45th Annual) Joint Meeting (20–22 March 2011)

Paper No. 6
Presentation Time: 1:30 PM-5:30 PM


AUSICH, William I., School of Earth Sciences, Ohio State University, 155 S Oval Mall, Columbus, OH 43210-1398 and THOMPSON, Jeffrey R., Department of Earth Sciences, The University of Southern California, Columbus, OH 43235,

Little is known of crinoid faunas from the Lower Devonian of South America; therefore, the three new Lower Devonian crinoids reported here from Bolivia are important discoveries. Two new taxa are from the Cerro Kochis Formation in the Cochabamba Department, one of which has been identified as a Rhodocrinitidae. An additional camerate from the Melocritinidae family is reported from the Belèn Formation of the Altiplano region in the La Paz Department. In addition, a poorly preserved blastoid was recovered from the Altiplano region. These crinoids are described. These taxa were previously unknown from South America. The specimens from the Cochabamba Department are from below the Franchovichia zone preserved in a carbonate mud. The specimens from the Altiplano are from siliciclastic rocks.