[1][2][3][4] Species belonging to this genus are suggested to be plesiadapiforms based on adaptations observed in the skeletal morphology consistent with arboreal locomotor behavior.

[1][2] Following the mass extinction event at the Cretaceous–Paleogene boundary (K-Pg), a large diversity of plesiadapiform families were documented beginning at the Torrejonian NALMA.

[2] The K-Pg boundary is marked by what is termed an “iridium anomaly” and can be seen in the United States in the San Juan Basin of New Mexico and southwest Colorado.

For over a century, paleontologists have collected a plethora of different taxa from the Nacimiento Formation, San Juan Basin, New Mexico, including Torrejonian mammals.

Additional fossil material was uncovered in 1969 allowing G.F. Gunnell to draw a comparison to a later, larger species from the Tiffanian NALMA, Torrejonia sirokyi.

[2] Additionally, analysis of the partial skeleton of T. wilsoni suggests that palaechthonids were arboreal and had capabilities for clinging and climbing on vertical supports like other plesiadapiforms.