Ichnogenus: Gregaripus WEEMS, 1987
Etymology: Latin for “sociable foot”, from its tendency to occur in flocks.

Ichnospecies: bairdi WEEMS, 1987
Etymology: In honor for Donald Baird of Princeton University.

Holotype: USNM 358651

Locality: Culpepper Crushed Stone Quarry, Culpepper Basin, Northern Virginia.

Horizon:

Biostratigraphy:

Age: Norian Stage, Middle Late Triassic Epoch, Late Triassic.

Material: An isolated print.

USNM 358659: From trackway GE-1: 4 prints.

Paratype:

USNM 358652:

Referred material:

USNM 358659: Trackway GE-11:

USNM 358660: Trackway GE-2:.