The palpebral bone is a small dermal bone found in the region of the eye socket in a variety of animals, including crocodilians and ornithischian dinosaurs. It is also known as the adlacrimal [1] or supraorbital, although the latter term may not be confused with the supraorbital in osteichthyan fishes. [2] In ornithischians, the palpebral can form a prong that projects from the front upper corner of the orbit. It is large in heterodontosaurids, [3] basal ornithopods such as Thescelosaurus (as Bugenasaura) and Dryosaurus , [3] [4] and basal ceratopsians such as Archaeoceratops ; [5] in these animals, the prong is elongate and would have stuck out and over the eye like a bony eyebrow. As paleoartist Gregory S. Paul has noted, elongate palpebrals would have given their owners fierce-looking "eagle eyes". [6] In such cases, the expanded palpebral may have functioned to shade the eye. [7]
Kangnasaurus is a genus of iguanodontian ornithopod dinosaur found in supposedly Early Cretaceous rocks of South Africa. It is known from a tooth and possibly some postcranial remains. At times, it has been considered dubious or a valid genus. It was probably similar to Dryosaurus.
Gongbusaurus is a genus of ornithischian, perhaps ornithopod, dinosaur that lived between about 160 and 157 million years ago, in the Late Jurassic period. A small herbivore, it is very poorly known. Two species have been assigned to it, but as the original name is based on teeth, there is no concrete evidence to connect the two species. Its fossils have been found in China.
Cedrorestes is a genus of iguanodontian dinosaur from the Early Cretaceous of Utah. It is based on an incomplete skeleton which was found in the Barremian-age Yellow Cat Member of the Cedar Mountain Formation.
Teresa Maryańska was a Polish paleontologist who has specialized in Mongolian dinosaurs, particularly pachycephalosaurians and ankylosaurians. Peter Dodson claims that in 1974 Maryanska together with Halszka Osmólska were among the first "women to describe new kinds of dinosaurs". She is considered not only as one of Poland's but also one of the world's leading experts on dinosaurs.
The EL Castellar Formation is a geological formation in La Rioja and Teruel, Spain whose strata date back to the possibly the Valanginian to the Barremian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.
Parksosauridae is a clade or family of small ornithischians which have previously been generally allied to hypsilophodontids. Parksosauridae is often considered a synonym of Thescelosauridae, but the two groups cannot be synonyms because Parksosauridae is defined as a stem, while Thescelosauridae is defined as a node.
The San Giovanni Rotondo Formation is a Mesozoic geologic formation in Italy. Fossil ornithopod tracks have been reported from the formation.
The Kiyosu-e Formation is a Mesozoic geologic formation in Yamaguchi Prefecture, Japan. Fossil ornithopod tracks have been reported from the formation.
The Kagidani Formation is a Mesozoic geologic formation in Japan. Fossil ornithopod tracks have been reported from the formation.
The Geoncheonri Formation is a Mesozoic geologic formationin the Gyeongsang Basin, southeast South Korea. Fossil ornithopod tracks have been reported from the formation.
The Mexcala Formation is a Mesozoic geologic formation in Guerrero state, southern Mexico.
The Nagatogawa Formation is a Mesozoic geologic formation in Japan. Fossil ornithopod tracks have been reported from the formation.
The Razorback Beds is a Mesozoic geologic formation in Australia. Fossil ornithopod tracks have been reported from the formation.
The Precipice Sandstone is a Hettangian geologic formation found in the Surat Basin of Queensland and New South Wales in Australia. Fossil ornithopod and theropod tracks have been reported from the formation.
The Chiating Series is a Mesozoic geologic formation in China. Fossil ornithopod tracks have been reported from the formation.
The Akaiwa Formation is a Mesozoic geologic formation in central Honshu, Japan. Indeterminate ornithischian fossils are known from the formation. Fossil ornithopod tracks have been reported from the formation. As well as the turtle Kappachelys
The Zarbiz Svita is a Mesozoic geologic formation. Fossil ornithopod tracks have been reported from the formation.
The Xiguayuan Formation is a Mesozoic geologic formation in China. Fossil ornithopod tracks have been reported from the formation.
The Tongfosi Formation is a Mesozoic geologic formation in China. Fossil ornithopod tracks have been reported from the formation.
The Tochikubo Formation is a Mesozoic geologic formation in northern Honshu, Japan. Fossil ornithopod tracks have been reported from the formation.
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