Ishigaki, Shinobu; Lockley, Martin G. (Mar 2010). "Didactyl, tridactyl and tetradactyl theropod trackways from the Lower Jurassic of Morocco: evidence of limping, labouring and other irregular gaits". Historical Biology (بالإنجليزية). 22 (1–3): 100–108. DOI:10.1080/08912961003789867. ISSN:0891-2963.
Ishigaki, Shinobu; Lockley, Martin G. (Mar 2010). "Didactyl, tridactyl and tetradactyl theropod trackways from the Lower Jurassic of Morocco: evidence of limping, labouring and other irregular gaits". Historical Biology (بالإنجليزية). 22 (1–3): 100–108. DOI:10.1080/08912961003789867. ISSN:0891-2963.