''Jeyawati'' (meaning "grinding mouth" in the

Zuni language Zuni (also formerly Zuñi, endonym ) is a language of the Zuni people, indigenous to western New Mexico and eastern Arizona in the United States. It is spoken by around 9,500 people, especially in the vicinity of Zuni Pueblo, New Mexico, and ...

) is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

hadrosauroid Hadrosauroidea is a clade or superfamily of ornithischian dinosaurs that includes the "duck-billed" dinosaurs, or Hadrosauridae, and all dinosaurs more closely related to them than to ''Iguanodon''. Their remains have been recovered in Asia, Euro ...

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

which lived during the

Turonian The Turonian is, in the International Commission on Stratigraphy, ICS' geologic timescale, the second age (geology), age in the Late Cretaceous epoch (geology), Epoch, or a stage (stratigraphy), stage in the Upper Cretaceous series (stratigraphy), ...

stage of the

Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''cre ...

. The

type species In International_Code_of_Zoological_Nomenclature, 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 spe ...

, ''J. rugoculus'', was described in 2010, based on fossils recovered in the U.S. state of

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

. The

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

, MSM P4166, was discovered in the

Moreno Hill Formation The Moreno Hill Formation is a geological formation in western New Mexico whose strata were deposited in the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). ...

. A

cladistic Cladistics ( ; from Ancient Greek 'branch') 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 ...

analysis indicates that ''Jeyawati'' was more

plesiomorphic In phylogenetics, a plesiomorphy ("near form") and symplesiomorphy are synonyms for an ancestral character shared by all members of a clade, which does not distinguish the clade from other clades. Plesiomorphy, symplesiomorphy, apomorphy, an ...

(ancestral) than '' Shuangmiaosaurus'', ''

Telmatosaurus ''Telmatosaurus'' (meaning "marsh lizard") is a genus of basal (phylogeny), basal hadrosauromorph dinosaur from the Late Cretaceous of Romania. It was a relatively small hadrosaur, measuring approximately in length and in body mass, which has b ...

'', and ''

Bactrosaurus ''Bactrosaurus'' (; meaning "Club lizard," "baktron" = club + ''sauros'' = lizard) is a genus of herbivorous hadrosauroid dinosaur that lived in Asia during the Late Cretaceous, from about 96 to 85 million years ago. The position ''Bactrosaurus'' ...

'', but more derived (less like the common ancestor) than ''

Eolambia ''Eolambia'' (meaning "dawn lambeosaurine") is a genus of herbivorous hadrosauroid dinosaur from the early Late Cretaceous of the United States. It contains a single species, ''E. caroljonesa'', named by paleontologist James Kirkland in 19 ...

'', ''

Probactrosaurus ''Probactrosaurus'' (meaning "before ''Bactrosaurus''") is an early herbivorous hadrosauroid iguanodont dinosaur. It lived in China during the Early Cretaceous Period (geology), period. Discovery and species In 1959 and 1960 a Soviet-Chinese ex ...

'', and ''

Protohadros ''Protohadros'' (meaning "first hadrosaur") is a genus of herbivorous ornithischian dinosaur from the Late Cretaceous (Cenomanian stage). Gary Byrd, a part-time palaeontologist, discovered some remains of this euornithopod (ribs and an ungual) ...

''.McDonald Andrew T.; Wolfe, Douglas G. and Kirkland, James I. (2010).
A new basal hadrosauroid (Dinosauria: Ornithopoda) from the Turonian of New Mexico
. ''Journal of Vertebrate Paleontology''. 30(3): 799–812.

References

{{Taxonbar, from=Q1955067 Hadrosauroidea Dinosaur genera Turonian dinosaurs Fossil taxa described in 2010 Taxa named by James I. Kirkland Taxa named by Lindsay Zanno Dinosaurs of the United States