Clessidromma
Clessidromma is an extinct genus of ommatid beetle. The genus was first described in 2017 for the species. "C. palmeri". In 2019, another species, "C. tianae" was described, which was initially assigned to the new genus "Lepidomma." "Lepidomma" was synonymised with "Clessidromma" by Kirejtshuk, 2020, who described a third species, "C. zengi". "C. zengi" was moved to the separate genus "Kirejtomma" in 2021. Both currently assigned species are known from the Cenomanian aged Burmese amber of Myanmar.