[N] 2011 Boutakioutichnium atlasicus
Nouri. J., Díaz-Martínez, I. & Pérez-Lorente, F. (2011) Tetradactyl Footprints of an Unknown Affinity Theropod Dinosaur from the Upper Jurassic of Morocco. PLoS ONE 6(12): e26882. doi:10.1371/journal.pone.0026882
New tetradactyl theropod footprints from Upper Jurassic (Oxfordian-Kimmeridgian) have been found in the Iouaride`ne syncline (Morocco). The tracksites are at several layers in the intermediate lacustrine unit of Iouaride`ne Formation. The footprints were named informally in previous works ‘‘Eutynichnium atlasipodus’’. We consider as nomen nudum.
Boutakioutichnium atlasicus ichnogen. et ichnosp. nov. is mainly characterized by the hallux impression. It is long, strong, directed medially or forward, with two digital pads and with the proximal part of the first pad in lateral position. More than 100 footprints in 15 trackways have been studied with these features. The footprints are large, 38–48 cm in length, and 26–31 cm in width.
Boutakioutichnium mainly differs from other ichnotaxa with hallux impression in lacking metatarsal marks and in not being a very deep footprint. The distinct morphology of the hallux of the Boutakioutichnium trackmaker –i.e. size and hallux position- are unique in the dinosaur autopodial record to date.