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Anteavis crurilongus

Osteichthyes

Taxonomy
Anteavis crurilongus was named by Martínez et al. (2025). Its type specimen is PVSJ 1085, a partial skeleton (Partial skeleton of a single individual, including cranial and postcranial remains), and it is a 3D body fossil. Its type locality is Hoyada de Ischigualasto, Ischigualasto Provincial Park, which is in a Carnian fluvial sandstone/siltstone in the Ischigualasto Formation of Argentina. It is the type species of Anteavis.

Synonymy list
YearName and author
2025Anteavis crurilongus Martínez et al. p. 2 fig. 1

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
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()
Saurischia()
Theropoda()
genusAnteavis
speciescrurilongus

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.

Anteavis crurilongus Martínez et al. 2025
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Diagnosis
ReferenceDiagnosis
R. N. Martínez et al. 2025A small theropod distinguished from other early dinosaurs based on a unique combination of apomorphies (Supplementary Section 4), including at least the following eight autapomorphies: dorsal maxillary process expanded anteroposteriorly, with concave anterior and posterior margins; large coracoid foramen situated between scapula and coracoid, drilling the scapula medially; humerus with deep foramen on the proximal surface of the medial tuberosity; puboischiadic plate with two, similarly sized openings in the pubis; femoral head with blunt anterolateral tuberosity in proximal view and pronounced ovoid tuberosity on the anterolateral surface; and distal end of the tibia with coarse, rounded tuberosities on the medial and posterior surfaces.
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
References: Kiessling 2004, Marsh 1875

Age range: Carnian or 237.00000 to 227.30000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Carnian237.0 - 227.3Argentina (San Juan) Anteavis crurilongus (type locality: 275596)