Arroyo Formation Research Articles

A Study of the Ostracode Fauna of the Arroyo Formation, Clearfork Group of the Permian in Tom Green County, Texas

The Ostracodes described in this paper give evidence of having belonged to an indigenous and secluded fauna. In -this respect the presence of the new genus Knoxina is significant. This form seems to have evolved from the genus Jonesina, and, although four species of Knoxina are already described below, others could probably be included were it not for the poor preservation of the carapaces, making identification too uncertain.