Li, Y.-D.; Cai, C.-Y. Revisiting the Morphology of the Cretaceous Ommatid Beetle Clessidromma Palmeri (Coleoptera: Archostemata: Ommatidae). Pap. Avulsos Zool. 2021, 61, e20216195. https://doi.org/10.11606/1807-0205/2021.61.95.