PBDB Taxon

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Sarmientichnus

Reptilia

Taxonomy

Sarmientichnus was named by Casamiquela (1964). It is considered to be a form taxon. Its type is Sarmientichnus scagliai.

It was considered a nomen dubium by Kim et al. (2018).

It was assigned to Coelurosauroidea by Casamiquela (1964); to Saurischia by Haubold (1974); to Coelurosauria by Bonaparte (1980); to Coelurosauria by Haubold (1971), Leonardi (1981) and Leonardi (1989); to Sauropodidae by Calvo (2007); and to Theropoda by De Valais and Melchor (2003), de Valais (2011) and Otero and Reguero (2013).

Species

S. scagliai (syn. Casamiquelichnus navesorum) (type species)

Synonyms

Casamiquelichnus was named by Coria and Paulina Carabajal (2004). It is considered to be a form taxon.

It was synonymized subjectively with Sarmientichnus by de Valais (2011) and Xing et al. (2018).

Synonymy list

Year	Name and author
1964	Sarmientichnus Casamiquela p. 130
1971	Sarmientichnus Haubold p. 73
1974	Sarmientichnus Haubold p. 45
1980	Sarmientichnus Bonaparte p. 85
1981	Sarmientichnus Leonardi p. 932
1989	Sarmientichnus Leonardi p. 166
2003	Sarmientichnus De Valais and Melchor p. 53R
2004	Casamiquelichnus Coria and Paulina Carabajal
2007	Sarmientichnus Calvo p. 321
2011	Sarmientichnus de Valais pp. 35-36
2013	Sarmientichnus Otero and Reguero p. 20

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota

Rank	Name	Author
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
informal	Avemetatarsalia
—	Ornithodira
—	Dinosauromorpha
—	Dinosauriformes
—	Dinosauria	()
—	Theropoda	()
genus	Sarmientichnus

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.

G. †Sarmientichnus Casamiquela 1964

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†Sarmientichnus scagliai Casamiquela 1964

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Invalid names: Casamiquelichnus navesorum Coria and Paulina Carabajal 2004 [synonym]

Invalid names: Casamiquelichnus Coria and Paulina Carabajal 2004 [synonym]

Diagnosis

Reference	Diagnosis
R. M. Casamiquela 1964	Impresiones correspondientes a un dinosaurio de pequeña talla, bípedo, y de extrema especialización pedial, funcionamiento monodáctilo. Ángulo de paso prácticamente llano. Digitigrado. Único dedo presente con falange ungueal acuminada, pero carente de verdadera garra. Marcas de cola no visibles. Largo del paso doble 340-370 mm.
S. de Valais 2011	Bipedal trackways composed of functionally didactyl tracks with the major axis nearly parallel to the midline. Caudally orientated digit I and cranially orientated digit III impressions are directly in line with one another and usually are not clearly distinguishable from each other. No lateral digits are preserved. Digit III has a triangular claw mark. Straight marks parallel to the midline are often present. The trackways are relatively narrow and have high pace angulation.