Named By: Alfred S. Romer - 1972.
Classification: Chordata, Reptilia, Archosauria, Pseudosuchia, Suchia, Gracilisuchidae.
Species: G. stipanicicorum (type).
Size: Skull 9 centimetres long, partial remains of the post cranial skeleton combined with skull yield a length of up 28 centimetres for the preserved elements of the holotype. Full length roughly estimated at about 60+ centimetres.
Known locations: Argentina - Chaņares Formation.
Time period: Anisian to Ladinian of the Triassic.
Fossil representation: Holotype based upon a skull and partially preserved anterior portion of the skeleton. Note*- many fossils once attributed to Gracilisuchus have been moved to other genera.
Gracilisuchus is a very Ancient, and very small relative of the crocodiles that we know today. Gracilisuchus however seems to have been mostly terrestrial walking about on four legs, but also having the ability to rear up and walk on just the two rear legs. The small size and gracile (hence the name) build of Gracilisuchus meant that it would have been limited to hunting only small vertebrates, and possibly larger invertebrates.
- The Chaņares (Argentina) Triassic reptile fauna. An early ornithosuchid pseudosuchian, Gracilisuchus stipanicicorum, gen. et sp. nov. - Breviora 389:1-24. - Alfred S. Romer - 1972.
- Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia). - Earth and Environmental Science Transactions of the Royal Society of Edinburgh 102 (2): 105–128 - A. Lecuona & J. B. Desojo - 1972.
- Hind limb osteology of Gracilisuchus stipanicicorum (Archosauria: Pseudosuchia)". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 102 (2): 105–128. - A. Lecuona & J. B. Desojo - 2012.
- New information on the postcranial skeleton of Gracilisuchus stipanicicorum (Archosauria: Suchia) and reappraisal of its phylogenetic position. - Zoological Journal of the Linnean Society. 181 (3): 638–677. - A. Lecuona, J. B. Desojo & D. Pol - 2017.