Saurexallopus
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| Saurexallopus Temporal range: Late Cretaceous | |
|---|---|
 | |
| Saurexallopus zerbsti (holotype CU-MWC 224.2) from the Lance Formation | |
Trace fossil classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Maniraptora |
| Ichnogenus: | †Saurexallopus Harris, 1997 |
| Type ichnospecies | |
| †Saurexallopus lovei Harris, 1997 | |
| Other species | |
| |
| Synonyms | |
|
Exallopus lovei Harris et al., 1996 | |
Saurexallopus (meaning "reptile different foot") is an ichnogenus of four-toed theropod footprints from the Late Cretaceous period. The type ichnospecies is S. lovei, named and described in 1996 from the Harebell Formation.[1] The taxon was originally named Exallopus, but later renamed as Saurexallopus as the former was preoccupied by a polychaete.[2] A second species, S.zerbsti, was named and described in 2004 from the Lance Formation.[3] In 2012 a four-toed track from the Cantwell Formation was referred to Saurexallopus indet. It was also suggested that Saurexallopus was produced by a therizinosaur taxon.[4] In 2013 based on skeletal proportions it was suggested that the ichnotaxon was instead produced by an oviraptorosaur taxon.[5] In 2014 a third species was named, S.cordata, from the Wapiti Formation.[6] In 2018 several tracks from the Blackhawk Formation were referred to Saurexallopus indet.[7] A 2026 study found the type species of the genus S.lovei as a nomen dubium as they are based on penetrative tracks[8]
