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Dilophosauripus williamsi

Reptilia - Grallatoridae

Taxonomy
Dilophosauripus williamsi was named by Welles (1971). It is considered to be a form taxon. Its type specimen is UCMP 79690, a footprint (cast of footprint), and it is a trace fossil. Its type locality is Moenave Road Tracksite, UCMP V67239, which is in a Hettangian terrestrial shale/sandstone in the Kayenta Formation of Arizona.

Synonymy list
YearName and author
1971Dilophosauripus williamsi Welles p. 29 fig. 1
1984Dilophosauripus williamsi Thulborn and Wade p. 449
1986Dilophosauripus williamsi Lockley p. 16
1986Dilophosauripus williamsi Morales p. 14
1986Dilophosauripus williamsi Morales and Colbert p. 21
1990Dilophosauripus williamsi Thulborn p. 150
1992Dilophosauripus williamsi Demathieu and Sciau p. 1562
1993Dilophosauripus williamsi Demathieu p. 232
1993Dilophosauripus williamsi Irby p. 19
1996Dilophosauripus williamsi Irby p. 155
2000Dilophosauripus williamsi Gand et al. p. 618
2002Dilophosauripus williamsi Demathieu et al. p. 12
2003Dilophosauripus williamsi Demathieu p. 59
2005Dilophosauripus williamsi Gand et al. p. 32
2008Dilophosauripus williamsi Bessedik et al. p. 20
2012Dilophosauripus williamsi Moreau et al. p. 234
2014Dilophosauripus williamsi Moreau et al. p. 365
2018Dilophosauripus williamsi Gand et al. p. 201
2018Dilophosauripus williamsi Moreau et al. p. 37
2019Dilophosauripus williamsi Moreau et al. p. 348
2020Dilophosauripus williamsi Bessedik et al. p. 35

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Theropoda()
familyGrallatoridae
genusDilophosauripus
specieswilliamsi

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

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Diagnosis
ReferenceDiagnosis
S. P. Welles 1971Length of digit II 180 [mm]; of III 230; of IV 220 (est.); projection of III beyond II and IV 100; length of foot 325; between tips of II and IV 280; divarication of II and III 20°; of III and IV 28°; of II and IV 54°; length of pace (from isolated trackway) about 1060; ratio of pace to foot about 3.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:08
Modified: 2004-12-14 14:50:08
Source: o = order
Reference: Marsh 1875

Age range: Hettangian or 201.30000 to 199.30000 Ma

Collections (6 total)


Time interval Ma Country or state Original ID and collection number
Hettangian201.3 - 199.3France (Region Midi-Pyrenees) Dilophosauripus williamsi (31308)
Early/Lower Hettangian201.3 - 196.5France Dilophosauripus williamsi (223717 223718 223719)
Early/Lower Hettangian201.3 - 196.5USA (Arizona) Dinosauria indet. (type locality: 51897)
Middle Hettangian201.3 - 196.5France (Occitanie) Dilophosauripus williamsi (190122)