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Iguanacolossus fortis

Reptilia

Taxonomy
Iguanacolossus fortis was named by McDonald et al. (2010). Its type specimen is UMNH VP 20205, a partial skeleton, and it is a 3D body fossil. Its type locality is Don's Ridge North (UMNH VP Loc. 1206), which is in a Berriasian/Valanginian terrestrial mudstone/chert in the Cedar Mountain Formation of Utah.

Synonymy list
YearName and author
2010Iguanacolossus fortis McDonald et al. p. 5 figs. 4-16
2011Iguanacolossus fortis Prieto-Márquez p. 63
2013Iguanacolossus fortis Kirkland p. 3
2013Iguanacolossus fortis Zheng et al.
2015Iguanacolosus fortis Milàn et al. p. 522
2016Iguanacolossus fortis Fuentes Vidarte et al. p. 435
2016Iguanacolossus fortis Kirkland et al. p. 21
2022Iguanacolossus fortis Ji and Zhang p. 6
2022Iguanacolossus fortis Rotatori et al. p. 132

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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
classReptilia
subclassEureptilia()
—Romeriida
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
—Ornithischia()
—Genasauria
—Cerapoda
—Ornithopoda()
—Clypeodonta
—Iguanodontia()
—Dryomorpha
—Styracosterna
genusIguanacolossus
speciesfortis

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.

†Iguanacolossus fortis McDonald et al. 2010
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Diagnosis
ReferenceDiagnosis
A. T. McDonald et al. 2010Basal styracosternan diagnosed by a single autapomorphy: contact surface for supraoccipital on caudomedial process of squamosal is sinuous in caudal view. Also distinguished by a unique combination of characters: postorbital process of the squamosal mediolaterally compressed and blade-like; axial neural spine blade-like and semi-circular in profile; cranial extremity of preacetabular process of ilium modified into horizontal boot; dorsal margin of ilium straight; cranial pubic process with concave dorsal margin but little expansion of its cranial end (dorsal and ventral margins both curve dorsally); pubis tapers to a blunt point.
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: gregariouso
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: herbivoresubo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2009-01-03 20:40:05
Modified: 2009-01-03 22:40:05
Source: subo = suborder, o = order
References: Benton 1983, Marsh 1875

Age range: base of the Late/Upper Berriasian to the top of the Valanginian or 145.00000 to 132.90000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Berriasian - Valanginian145.0 - 132.9USA (Utah) Iguanodontidae indet. (type locality: 97957)