Genus: Gehennachelys ADRIAN, SMITH & NOTO, 2023
Etymology: Gehenna refers to the biblical lake of fire and brimstone, connoting teh sulphur content in teh deposits where teh holotype was discovered, and the massive wildfires that were pprevalent in the area during teh Cenomanina, and Greek, chelys, "turtle."

Species: maini (ADRIAN, SMITH, NOTO & GROSSMAN, 2019) ADRIAN, SMITH & NOTO, 2023
Etymology: In honor of the late Dr. Derek Main, for his vision and dedicated study and management of the AAS fossil collections.
= “Trinitichelys” maini ADRIAN, SMITH, NOTO & GROSSMAN, 2019

Holotype: DMNH 2013-07-0712

Locality: UTA Location 50 (Arlington Archosaur Site; AAS), northern Arlington, Tarrent County, Texas.

Note: Exact locality data on fileat the Perot Museum of Nature and Science, Dallas, Texas for qualified researchers.

Horizon: Lewisville Member, Woodebine Formation.

Biostratigraphy:

Age: Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.

Material: Anterior lobe of a plastron.

Referred material:

DMNH 2013-07-0784: Co-ossifed partial anterior carapace and associated cossified posterior carapace.

DMNH 2013-07-0499: Isolated p1.

DMNH 2013-07-1711: Isolated nu.

DMNH 2013-07-0696, -0704: Left co-ossifed bridge weries.

DMNH 2013-07-0873: Left co-ossified bridge series.

DMNH 2013-07-1703:Isolated mes.

DMNH 2013-07-1717: Isoalted xi of a cf. juvenile.

ADRIAN, SMITH & NOTO, 2023

DMNH 2013-07-0533: Partial left scapula.

DMNH 2013-07-0601: Right scapula.

DMNH 2-13-07-0681: Partial left scapula and associated bone fragments.

DMNH 2013-07-1369: Partial right scapula.

DMNH 2013-07-1431: Right coraocid.

DMNH 2013-07-1924: Second cervical vertebra.

DMNH 2013-078-1942: A nearly complete shell and cranium with associated postcrania.

DMNH 2013-07-2005: Partial right scapula.

HMNS-10-TM: A complete shell.