†unranked clade Panchelydridae Joyce et al. 2004 (turtle)
Reptilia - Testudines - Panchelydridae
Parent taxon: Chelydroidea according to W. G. Joyce 2016
Sister taxon: Pankinosternoidea
Subtaxa: Denverus Hoplochelys caelata Protochelydra
Ecology: aquatic omnivore
Distribution:
• Eocene of United States (2: Wyoming collections)
• Clarkforkian of United States (1: Wyoming)
• Paleocene to Eocene of United States (1: Alaska)
• Paleocene of Canada (4: Alberta), United States (4: Colorado, North Dakota)
• Cretaceous of Mexico (1), United States (6: North Dakota)
Total: 19 collections each including a single occurrence