The Permian dicynodont Colobodectes cluveri (Therapsida, Anomodontia), with notes on its ontogeny and stratigraphic range in the Karoo Basin, South Africa

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Abstract
The dicynodont Colobodectes cluveri was described from a single specimen in 2003. Although the holotype possessed a distinctive combination of primitive, derived, and autapomorphic characters, incompleteness left some aspects of its morphology, such as whether it possessed postfrontal bones, uncertain. Similarly, the holotype was collected near the boundary between the Ecca and Beaufort groups of the Karoo Basin, but the presence of one specimen did not allow a stratigraphic range to be delineated, nor could it be determined whether C. cluveri possessed any biostratigraphic utility. During an ongoing investigation of Tapinocephalus Assemblage Zone dicynodont diversity and biostratigraphy, we identified four new specimens of C. cluveri ranging in size from small juveniles to a large adult. These specimens confirm many aspects of the holotype's distinctive morphology, including the absence of postfrontals, paired premaxillae and vomers, and a low foramen magnum. They also offer insights into ontoge...

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