Species: hoffmanorum emend BELL, & CHIAPPE, 2015
Etymology: In honor of Karen and Jim Hoffman, whose generous support has greatly enhanced the programs at the Natural History Museum of Los Angeles County, including research at the Dinosaur Institute.
= Fumicollis hoffmani BELL, & CHIAPPE, 2015
Note: The authors named the species after two people, and incorrectly used 'i' when they should have used 'orum'.

Holotype: USNM 20030

Locality: 5 miles northeast of Elkader, Logan County, Kansas.

Horizon: Smoky Hill Member, Niobrara Formation.

Biostratigraphy:

Age: Upper Coniacian-Lower Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: 8 presacral vertebrae, multiple rib fragments, the right half of the pelvis including a complete ilium, ischium, and pubis, portions of the left half of the pelvis, including the acetabulum and a fragment of either the ischium of pubis, a portion of the pygostyle preserving three distal-most fused centra, the nearly complete left hindlimb, femur, patella, fibula, tibiotarsus, tarsometatarsus, and 4 pedal phalanges, the partial right tibiotarsus, and 2 right pedal phalanges.