Reptilia - Dinosauria - Grallatoridae

Alternative combination: Atreipus sulcatus

Full reference: D. Baird. 1957. Triassic reptile footprint faunules from Milford, New Jersey. Bulletin of the Museum of Comparative Zoology 117(5):449-520

Belongs to Grallator according to H. Haubold 1971

Sister taxa: Eubrontes (Brontozoum), Eubrontes (Ichnites), Eubrontes (Ornithichnites), Eubrontes approximatus, Eubrontes cursorius, Eubrontes euskelosauroides, Eubrontes fieldi, Eubrontes giganteus, Eubrontes glenrosensis, Eubrontes lyellii, Eubrontes sillimani, Eubrontes tuberatus, Eubrontes veillonensis, Grallator (Eubrontes) divaricatus, Grallator (Eubrontes) platypus, Brontozoum expansum, Brontozoum thianschanicum, Grallator emeiensis, Grallator (Grallator), Grallator damanei, Grallator matsiengensis, Grallator molapoi, Grallator graciosus, Grallator rectilineus, Grallator minor, Grallator crassidigitus, Grallator palmipes, Grallator palustris, Grallator lambereshei, Grallator morijensis, Grallator moshoeshoei, Grallator princeps, Grallator limnosus, Grallator cuneatus, Grallator formosus, Grallator gracilis, Grallator tenuis, Grallator maximus, Grallator olonensis, Grallator variabilis, Grallator (Anchisauripus) hitchcocki, Grallator (Anchisauripus) minusculus, Anchisauripus tuberosus, Anchisauripus australis, Anchisauripus exsertus, Anchisauripus gwyneddensis, Anchisauripus minor, Anchisauripus milfordensis, Anchisauripus poolei, Anchisauripus bibractensis, Anchisauripus thomasi, Fulicopus minor, Gigandipus caudatus, Otouphepus declivis

Type specimen: MCZ 215, a footprint. Its type locality is Smith Clark's Quarry (tracks), Milford, level A, which is in a Norian terrestrial shale/sandstone in the Passaic Formation of New Jersey.

Ecology: ground dwelling carnivore