sentences:  In 1993, paleontologists Hans-Dieter Sues and Paul E. Olsen reassigned "T. jacobsi", as well as two additional trilophosaurids ("Tricuspisaurus" and "Variodens"), to Procolophonidae based on similarities between its tricuspid teeth and those of the newly described procolophonid "Xenodiphyodon".This view persisted in subsequent publications until the cranial material of "T. jacobsi" was described by Heckert "et al.