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The ideal textbook for non-science majors, this lively and engaging introduction encourages students to ask questions, assess data critically and think like a scientist. Building on the success of previous editions, Dinosaurs has been thoroughly updated to include new discoveries in the field, such as the toothed bird specimens found in China and r...
A new genus and species of non-hadrosaurid hadrosauroid, Gobihadros mongoliensis, is described from a virtually complete and undeformed skull and postcranial skeleton, as well as extensive referred material, collected from the Baynshire Formation (Cenomanian-Santonian) of the central and eastern Gobi Desert, Mongolia. Gobihadros mongoliensis is the...
Data matrix used in the phylogenetic analysis, based on Wu & Godefroit [11].
(DOCX)
Measurements of select hadrosauroid specimens from the Cretaceous of Mongolia.
(PDF)
Three juvenile specimens of Prosaurolophus maximus, represented by articulated to disarticulated skeletons, are the smallest known individuals for the taxon. Cranial anatomy of the juvenile specimens indicates that diagnostic characters of P. maximus are ontogenetically variable. In the smallest individual, the crest and deeply excavated fossa at t...
Cambridge Core - Palaeontology and Life History - Dinosaurs - by David E. Fastovsky
The characteristic predentary bone in ornithischian dinosaurs is a unique, unpaired element located at the midline of the mandibular symphysis. Although traditionally thought to only be a plant 'nipping' bone, the true functional significance of this bone among feeding mechanisms of ornithischian dinosaurs is poorly known. Recent studies of a selec...
Failure of research programmes can say something about the historical times in which they appeared. With this in mind, we review the life and career of Dominik von Kripp, an ornithologist and evolutionary biomechanist working principally in the early 1930s. von Kripp's publications and an unpublished manuscript suggest an innovative research progra...
A remarkable specimen of the small neoceratopsian dinosaur Protoceratops andrewsi (Late Cretaceous, Mongolia) reveals the first nest of this genus, complete with fifteen juveniles. The relatively large size of the individuals and their advanced state of development suggests the possibility that Protoceratops juveniles remained and grew in their nes...
Abundant and diverse dinosaur footprints have been discovered recently on bedding surfaces of the Lower Cretaceous Patuxent Formation of Maryland and Virginia. Found along with those ichnofossils is a fossil preserved partially as natural casts and partially as natural molds of a baby nodosaurid ankylosaur so small as to justify interpreting it as...
From the authors of The Evolution and Extinction of the Dinosaurs comes an introduction to the study of dinosaurs for non-specialists designed to excite readers about science by using dinosaurs to illustrate and discuss geology, natural history and evolution. While focusing on dinosaurs it also uses them to convey other aspects of the natural scien...
We thank J.D. Archibald for his comment on our study ([Fastovsky et al., 2004][1]) because his misunderstanding of our work provides the opportunity to clarify ideas that may have similarly confused other readers.
The raw data show high abundance in the late Campanian, decreased abundance in the
When the The Dinosauria was first published more than a decade ago, it was hailed as "the best scholarly reference work available on dinosaurs" and "an historically unparalleled compendium of information." This second, fully revised edition continues in the same vein as the first but encompasses the recent spectacular discoveries that have continue...
The richness of Mesozoic Dinosauria is examined through the use of a new
global database. Mesozoic dinosaurs show a steadily increasing rate of
diversification, in part attributable to the development of new
innovations driving an increasing variety of behavioral strategies. The
data do not suggest that dinosaurs were decreasing in richness leading...
More is known about hadrosaurids than about virtually any other group of dinosaurs. Remains are often abundant and range from fully articulated skeletons (sometimes complete with sclerotic rings, stapes, hyoids, and ossified tendons) to disartic-ulated and isolated material. In addition, remains of eggs, embryos , hatchlings (perinates), and juveni...
Pachycephalosauria is a group of bipedal ornithischians with thickened bones of the skull roof. The group is widely distributed throughout the Northern Hemisphere, mostly in western North America and central Asia, but also in Europe. This chapter examines the anatomy, phylogeny, and paleobiology of pachycephalosaurians. Pachycephalosaurians are oft...
This chapter presents a cladistic analysis of the phylogenetic relationships of basal Ornisthischia. Ornithischia is a stem-based taxon defined as all dinosaurs closer to Iguanodon than to Cetiosaurus. Basal ornithischians includes Lesothosaurus, Pisanosaurus, and Technosaurus, Basal ornithischians are small (1-2 m long), obligate bipeds that exhib...
This chapter focuses on Ankylosauria, a monophyletic clade of quadrupedal herbivorous dinosaurs characterized by the development of parasagittal osteoderms and osseous cranial ornamentation. All twenty-one taxa are clustered into one of two main lineages, Ankylosauridae or Nodosauridae. Fossil remains of ankylosaurs are found both in marine sedimen...
This chapter discusses the anatomy, evolution, paleobiogeography, and paleoecology of basal Thyreophora. Thyreophorans are dinosaurs that have prominent dorsal armor on the body. Basal thyreophorans are represented by Emausaurus ernsti, Scutellosaurus lawleri, and Scelidosaurus harrisonii. They had regular arrangement of dermal armor on their backs...
This revised edition of this book continues in the same vein as the first but encompasses recent spectacular discoveries that have continued to revolutionize this field. A thorough scientific view of current world research, the volume includes comprehensive coverage of dinosaur systematics, reproduction, and life history strategies, biogeography, t...
The dinosaurs of the Hateg Basin of Transylvania (late Maastrichtian; western Romania) include Theropoda, Sauropoda, Ornithopoda and Ankylosauria. Of these, one of the most enigmatic taxa is the ornithopod that Franz Baron Nopcsa originally described as Mochlodon suessi and M. robustus in 1902. These two species have come to be regarded as a single...
New hadrosaurid material is recorded from Fontllonga (Ager syncline, province of Lleida), in the Catalonian Pyrenees, comprising a dentary with part of the dental battery, recovered from Late Maastrichtian strata (Tremp Formation), close to the presumed Cretaceous/Tertiary boundary. This hadrosaurid is more derived than is Telmatosaurus transsylvan...
New dinosaur specimens from the uppermost Cretaceous of Spain represent the first record of a lambeosaurine hadrosaurid from Europe. This discovery, which consists of skull, mandible, and postcranial remains from the Tremp Basin (Lleida Province, Catalonia), is particularly unexpected because lambeosaurines are otherwise well known from western Nor...
Montanoceratops cerorhynchus has been described as the sister group of Ceratopsidae, even though analyses and diagnosis of this taxon have been tentative and incomplete. A second specimen of M. cerorhynchus includes new diagnostic elements, most notably a partial skull including the caudal half of the braincase, pectoral girdle and manus. Results o...
Book reviewed in this article:
King, G. 1996: Reptiles and Herbivory
The history of discoveries of new species of euornithopod dinosaurs, merychippine horses, and hominid primates is analyzed using cladistic analyses. Using decade-by-decade additions of newly discovered species, these analyses were used to evaluate changes in tree topology and completeness of the fossil record of each clade. Most discoveries have be...
The dinosaurian fauna of the Niobrara Chalk Formation constitutes the best known assemblage from the middle Santonian-early Campanian interval of the Late Cretaceous of North America. The fauna consists of both hadrosaurid ornithopods and nodosaurid ankylosaurs.The nodosaurid specimens from the Smoky Hill Chalk Member of the Niobrara Chalk Formatio...
Nature is the international weekly journal of science: a magazine style journal that publishes full-length research papers in all disciplines of science, as well as News and Views, reviews, news, features, commentaries, web focuses and more, covering all branches of science and how science impacts upon all aspects of society and life.
The hadrosaurid dinosaur Telmatosaurus transsylvanicus from the Late Cretaceous of the Hateg region of Romania is redescribed and its phylogenetic position among hadrosaurids and successive sister-taxa is evaluated. Hadrosauridae is defined and diagnosed as a monophyletic group on the basis of twelve of the best-known genera and species previously...
The regulation of the pattern of tooth replacement in lower vertebrates is explored from a theoretical morphological perspective. When inhibition zones are postulated as controls on the vertical and horizontal spacing of tooth germs, all replacement geometries of extant and fossil lower vertebrates can be simulated. Further work on the existence of...
Eleven femoral measurements on 33 specimens of European anchisaurid taxa are analyzed to gain insight into the taxonomic structure of the genus Plateosaurus. Principal Components Analysis indicates that the taxon as a whole is fairly homogeneous with respect to gross femoral dimensions. Within the general pool of material, two morphs may be indicat...
The first species from the United States that can clearly be referred to the European genus Iguanodon is described from the Lakota Formation of South Dakota. Consisting of virtually the entire skull and two vertebrae, I. lakotaensis (sp. nov.) represents the most primitive of Iguanodon species. Presence of Iguanodon from the Barremian (Lower Cretac...
Herbivory in terrestrial vertebrates dates back to at least Early Permian time. Yet herbivorous tetrapods did not greatly diversify until middle Permian and into Triassic time. All of these early herbivores are characterized by isognathy and bilateral occlusion. In the Triassic Period, these herbivores can be differentiated by several trophic-relat...
Medium- to large-sized mammalian herbivores of the present day are both abundant and diverse. One factor which undoubtedly contributes to this dominant position is the development of sophisticated methods of grinding tough plant material: complex teeth, an anisognathic jaw frame, and complex adductor muscles. Extant herbivorous reptiles are, by con...
Digestion begins with the mechanical breakdown of food between maxillary and dentary teeth; thus, the occlusal surfaces of these teeth are maintained and modified by the operation of the masticatory system. This section describes features of ornithopod dentitions (including wear patterns) that form the basis for testing kinematic models.
