''Jaklapallisaurus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of unaysaurid

sauropodomorph Sauropodomorpha ( ; from Greek, meaning "lizard-footed forms") is an extinct clade of long-necked, herbivorous, saurischian dinosaurs that includes the sauropods and their ancestral relatives. Sauropods generally grew to very large sizes, had lon ...

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...

. It lived during the

Late Triassic The Late Triassic is the third and final epoch (geology), epoch of the Triassic geologic time scale, Period in the geologic time scale, spanning the time between annum, Ma and Ma (million years ago). It is preceded by the Middle Triassic Epoch ...

period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept ...

(late

Norian The Norian is a division of the Triassic Period. It has the rank of an age (geochronology) or stage (chronostratigraphy). It lasted from ~227 to million years ago. It was preceded by the Carnian and succeeded by the Rhaetian. Stratigraphic defi ...

to earliest

Rhaetian The Rhaetian is the latest age of the Triassic Period (in geochronology) or the uppermost stage of the Triassic System (in chronostratigraphy). It was preceded by the Norian and succeeded by the Hettangian (the lowermost stage or earliest age ...

) in what is now

Telangana Telangana (; , ) is a States and union territories of India, state in India situated on the south-central stretch of the Indian subcontinent, Indian peninsula on the high Deccan Plateau. It is the List of states and union territories of India b ...

, central

India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

. It is known from the

holotype A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several ...

ISI R274,

postcrania Postcrania (postcranium, adjective: postcranial) in zoology and vertebrate paleontology is all or part of the skeleton apart from the skull. Frequently, fossil remains, e.g. of dinosaurs or other extinct tetrapods, consist of partial or isolated sk ...

l material which was collected from the

Upper Maleri Formation The Upper Maleri Formation is a sedimentary rock formation found in Telangana, India. It is one of the formations of the Pranhita–Godavari Basin. It is of late Norian and possibly earliest Rhaetian ages (Late Triassic), and is notable for its ...

(late Norian–earliest Rhaetian) of the Pranhita–Godavari Basin and from the referred material ISI R279, partially complete right

femur The femur (; ), or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates with ...

which was collected from the

Lower Dharmaram Formation The Lower Dharmaram Formation is a sedimentary rock formation found in Andhra Pradesh, India. It is one of the formations of the Pranhita–Godavari Basin. It is of latest Norian and Rhaetian ages (Upper Triassic), and is notable for its fo ...

(latest Norian–Rhaetian). It was first named by Fernando E. Novas, Martin D. Ezcurra,

Sankar Chatterjee Sankar Chatterjee (born May 28, 1943) is a paleontologist, and is the Paul W. Horn Professor of Geosciences at Texas Tech University and Curator of Paleontology at the Museum of Texas Tech University. He earned his Ph. D. from the University of ...

and Tharavat S. Kutty in

2011 File:2011 Events Collage.png, From top left, clockwise: a protester partaking in Occupy Wall Street heralds the beginning of the Occupy movement; protests against Libyan dictator Muammar Gaddafi, who was killed that October; a young man celebrate ...

and the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

is ''Jaklapallisaurus asymmetrica''. The generic name is derived from the Indian town of ''Jaklapalli'' which is close to the type locality. The specific name refers to the highly asymmetrical astragalus of this species in distal view. A

cladistic Cladistics (; ) is an approach to biological classification in which organisms are categorized in groups (" clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is typically shared derived char ...

analysis by Novas et al. found that all valid plateosaurid species form a large

polytomy An internal node of a phylogenetic tree is described as a polytomy or multifurcation if (i) it is in a rooted tree and is linked to three or more child subtrees or (ii) it is in an unrooted tree and is attached to four or more branches. A tr ...

. ''Jaklapallisaurus'' was found along with the basal sauropodomorph ''

Nambalia ''Nambalia'' is a genus of basal sauropodomorph dinosaur. It lived during the Late Triassic period (late Norian to earliest Rhaetian) in what is now Telangana, central India. It is known from the holotype ISI R273, parts 1–3, partially a ...

'', a guaibasaurid, and two basal dinosauriforms.

Classification

''Jaklapallisaurus'', alongside ''

Macrocollum ''Macrocollum'' is a genus of unaysaurid sauropodomorph dinosaur that lived during the Late Triassic period (early Norian) in what is now Brazil. It is one of the oldest dinosaurs known. Discovery ''Macrocollum'' was discovered in 2012 in Rio G ...

'' and ''

Unaysaurus ''Unaysaurus'' is a genus of unaysaurid sauropodomorph herbivore dinosaur. Discovered in southern Brazil, in the geopark of Paleorrota, in 1998, and announced in a press conference on Thursday, December 3, 2004, it is one of the oldest dinosaurs ...

'', was found to belong to the clade

Unaysauridae Unaysauridae is a clade of basal sauropodomorphs from the Late Triassic of India and Brazil. Diagnosis and systematics Unaysauridae was defined by Müller ''et al.'' (2018) as the most inclusive clade including ''Unaysaurus tolentinoi'', but no ...

References

Sauropodomorphs Norian life Rhaetian life Dinosaurs of India and Madagascar Late Triassic dinosaurs of Asia Triassic India Fossils of India Fossil taxa described in 2011 Taxa named by Fernando Novas {{triassic-reptile-stub