David B. Weishampel

Professor David Bruce Weishampel (born November 16, 1952) is an American palaeontologist in the Center for Functional Anatomy and Evolution at Johns Hopkins University School of Medicine. Weishampel received his Ph.D. in Geology from the University of Pennsylvania in 1981. His research focuses include dinosaur systematics, European dinosaurs of the Late Cretaceous, jaw mechanics and herbivory, cladistics and heterochrony and the history of evolutionary biology. Weishampel's best known published work is The Dinosauria University of California Press; 2nd edition (December 1, 2004). He consulted for Jurassic Park and is a good friend of Steven Spielberg. He has received an Academy Scientific and Technical Award.

David B. Weishampel
BornNovember 16, 1952 (age 66)
Scientific career
InstitutionsJohns Hopkins University

Selected publications

  • Weishampel, D. B., Dodson, P., and Osmólska, H. (eds.). 2004. The Dinosauria. 2nd edition. Univ. California Press, Berkeley. 833 pp.
  • Weishampel, D. B. & White, N. (eds.). 2003. The Dinosaur Papers: 1676-1906. Smithsonian Institution Press, Washington, D. C. 524 pp.
  • Weishampel, D.B., C.-M. Jianu, Z. Csiki, and D.B. Norman. 2003. Osteology and phylogeny of Zalmoxes (n.g.), an unusual ornithopod dinosaur from the latest Cretaceous of Romania. J. Syst. Palentol. 1: 123-143.
  • Jianu, C. M. & Weishampel, D. B. 1999. The smallest of the largest: a new look at possible dwarfing in sauropod dinosaurs. Geol. Mijnbouw 78: 335-343.
  • Weishampel, D. B. 1996. Fossils, phylogeny, and discovery: a cladistic study of the history of tree topologies and ghost lineage durations. J. Vert. Paleont. 16: 191 197.
  • Weishampel, D. B. 1995. Fossils, function, and phylogeny. In: Thomason, J. (ed.). Functional Morphology in Vertebrate Paleontology. Cambridge Univ. Press, New York. pp. 34–54.
  • Weishampel, D. B. & Horner, J. R. 1994. Life history syndromes, heterochrony, and the evolution of Dinosauria. In: Carpenter, K., Horner, J. R., & Hirsch, K. (eds.). Dinosaur Eggs and Babies. Cambridge Univ. Press, New York. pp. 229 243.
  • Heinrich, R. E., Ruff, C. B., & Weishampel, D. B. 1993. Femoral ontogeny and locomotor biomechanics of Dryosaurus lettowvorbecki (Dinosauria, Iguanodontia). Zool. J. Linn. Soc. 108: 179 196.
  • Weishampel, D. B., Norman, D. B., & Grigorescu, D. 1993. Telmatosaurus transsylvanicus from the Late Cretaceous of Romania: the most basal hadrosaurid. Palaeontology 36: 361 385.
  • Weishampel, D. B. 1993. Beams and machines: modeling approaches to analysis of skull form and function. In: Hanken, J. & Hall, B. K. (eds.) The Vertebrate Skull. Univ. Chicago Press, Chicago. pp. 303 344.
  • Weishampel, D. B., Grigorescu, D., & Norman, D. B. 1991. The dinosaurs of Transylvania: island biogeography in the Late Cretaceous. Natl. Geogr. Res. 7: 68 87.
  • Weishampel, D. B. 1991. A theoretical morphologic approach to tooth replacement in lower vertebrates. In: Vogel, K. & Schmidt Kittler, N. (eds.). Constructional Morphology and Biomechanics: Concepts and Implications. Springer Verlag, Berlin. pp. 295 310.

External links


Abelisauroidea is a clade of theropod dinosaurs within the Ceratosauria. Some well-known dinosaurs of this group include the abelisaurids Abelisaurus, Carnotaurus, Thanos and Majungasaurus.

Abelisauroids flourished in the Southern hemisphere during the Cretaceous period, but their origins can be traced back to at least the Middle Jurassic, when they had a more global distribution (the earliest known abelisauroid remains come from Australian and South American deposits dated to about 170 million years ago). By the Cretaceous period, abelisauroids had apparently become extinct in Asia and North America, possibly due to competition from tyrannosauroids. However, advanced abelisauroids of the family Abelisauridae persisted in the southern continents until the Cretaceous–Paleogene extinction event 66 million years ago.


Ajkaceratops (pronounced "oi-ka-sera-tops") is a genus of ceratopsian dinosaur described in 2010. It lived during the Late Cretaceous in what is now Europe, in what was then the western Tethyan archipelago. The type species, A. kozmai, is most closely related to forms in east Asia, from where its ancestors may have migrated by island-hopping. The generic name, Ajkaceratops, honors Ajka, a town in Hungary near Iharkút, where the fossils were discovered, combined with the Greek ceratops, meaning "horned face". The specific name, "kozmai", honors Károly Kozma.


Algoasaurus (; "Algoa Bay reptile") is a genus of sauropod dinosaur from the Tithonian-early Valanginian-age Late Jurassic-Early Cretaceous Upper Kirkwood Formation of Cape Province, South Africa. It was a neosauropod; although it has often been assigned to the Titanosauridae, there is no evidence for this, and recent reviews have considered it to be an indeterminate sauropod.The type species, A. bauri, was named by Robert Broom in 1904 from a back vertebra, femur and an ungual phalanx. The fossils were recovered in 1903 from a quarry by workmen who did not recognize them as dinosaur specimens, so many of the bones were made into bricks and thus destroyed. The animal may have been around 9 m (30 ft) long when it died.


Bakonydraco is a genus of pterodactyloid pterosaur of the Santonian-age Upper Cretaceous Csehbánya Formation of the Bakony Mountains, Iharkút, Veszprém, western Hungary.

The genus was named in 2005 by David Weishampel, Attila Ősi and Jianu Coralia. The type species is Bakonydraco galaczi. The genus name refers to the Bakony Mountains and to Latin draco, "dragon". The name is also a pun on Bakonyjákó, a village near where the bones were found. The specific epithet galaczi honors Professor András Galácz, who helped the authors in the Iharkút Research Program, where fossils are since 2000 found in open-pit mining of bauxite, among them the remains of pterosaurs, the first ever discovered in Hungary.


Chuandongocoelurus ( chwahn-DONG-ə-si-LEWR-əs) is a genus of carnivorous tetanuran theropod dinosaur from the Jurassic of China.


Dakotadon is a genus of iguanodont dinosaur from the Barremian-age Lower Cretaceous Lakota Formation of South Dakota, USA, known from a partial skull. It was first described in 1989 as Iguanodon lakotaensis, by David B. Weishampel and Philip R. Bjork. Its assignment has been controversial. Some researchers suggest that "I." lakotaensis was more basal than I. bernissartensis, and related to Theiophytalia, but David Norman has suggested that it was a synonym of I. bernissartensis. Gregory S. Paul, working on a revision of iguanodont species, gave "I." lakotaensis its own genus (Dakotadon) in 2008.

David B. Norman

David Bruce Norman (born 20 June 1952 in the United Kingdom) is a British paleontologist, currently the main curator of vertebrate paleontology at the Sedgwick Museum, Cambridge University. For many years until 2013, Norman has also been the Sedgwick Museum's director.


Dryosaurids were primitive iguanodonts. They are known from Middle Jurassic to Early Cretaceous rocks of Africa, Europe, and North America.


Gobihadros is a genus of basal hadrosauroid dinosaur from the Late Cretaceous of Mongolia. It contains one species, Gobihadros mongoliensis. The holotype specimen was recovered from the Bayan Shireh Formation (Cenomanian-Santonian). Its length was estimated at just under 3 meters (10 feet) long.

Lance Formation

The Lance (Creek) Formation is a division of Late Cretaceous (dating to about 69 - 66 Ma) rocks in the western United States. Named after Lance Creek, Wyoming, the microvertebrate fossils and dinosaurs represent important components of the latest Mesozoic vertebrate faunas. The Lance Formation is Late Maastrichtian in age (Lancian land mammal age), and shares much fauna with the Hell Creek Formation of Montana and North Dakota, the Frenchman Formation of southwest Saskatchewan, and the lower part of the Scollard Formation of Alberta.

The Lance Formation occurs above the Baculites clinolobatus ammonite marine zone in Wyoming, the top of which has been dated to about 69 million years ago, and extends to the K-Pg boundary, 66 million years ago. However, the characteristic land vertebrate fauna of the Lancian age (which take its name from this formation) is only found in the upper strata of the Lance, roughly corresponding to the thinner equivalent formations such as the Hell Creek Formation, the base of which has been estimated at 66.8 million years old.


Leptalestes is an extinct genus of mammals in the infraclass Metatheria. It was described by B.M. Davis in 2007. A new species, L. toevsi, was described from the late Cretaceous period of the United States by John P. Hunter, Ronald E. Heinrich, and David B. Weishampel in 2010.


Niobrarasaurus (meaning "Niobrara lizard") is an extinct genus of nodosaurid ankylosaur which lived during the Cretaceous 87 to 82 million years ago. Its fossils were found in the Smoky Hill Chalk Member of the Niobrara Formation, in western Kansas, which would have been near the middle of Western Interior Sea during the Late Cretaceous. It was a nodosaurid, an ankylosaur without a clubbed tail. It was closely related to Nodosaurus.

The type species, Niobrarasaurus coleii, was discovered and collected in 1930 by a geologist named Virgil Cole. It was originally described by Mehl in 1936 and named Hierosaurus coleii. It was then re-described as a new genus by Carpenter et al. in 1995. In 2002 the type specimen was transferred to the Sternberg Museum of Natural History, Hays, Kansas.


Orodromeus (meaning "Mountain Runner") is a genus of herbivorous parksosaurid dinosaur from the Late Cretaceous of North America.


Plesiohadros is an extinct genus of hadrosauroid dinosaur. It is known from a partial skeleton including the skull collected at Alag Teg locality, from the Campanian Djadochta Formation of southern Mongolia. The type species is Plesiohadros djadokhtaensis.


Propanoplosaurus is a genus of herbivorous nodosaurid dinosaur from the Early Cretaceous Patuxent Formation of Maryland, USA. Its type specimen is a natural cast and partial natural mold of a hatchling.

From 1994 onwards Ray Stanford uncovered an ichnofauna in Maryland near the border with Washington D.C.. Along with dinosaur footprints the impressions of a neonate nodosaurid were found.The type species Propanoplosaurus marylandicus was named and described by Stanford, David Weishampel and Valerie DeLeon in 2011. The generic name combines the Latin prefix pro~ with the name of the genus Panoplosaurus because the new species lived earlier than — but resembled much — this already described nodosaurid. The specific name refers to Maryland.The holotype, USNM 540686, was found in the Patuxent Formation, dating from the late Aptian. It consists of the impressions of the back of the head together with a natural cast of the ribcage, some vertebrae, the right forelimb, the right femur and a right foot. The animal is shown lying on its back. The authors rejected the possibility the specimen represented a pseudofossil or an embryo. The specimen is the first nodosaurid skeleton from the eastern seaboard from which previously only nodosaurid teeth named as Priconodon were known, and the first neonate dinosaur from that region.The specimen has a preserved length of thirteen centimetres. The total length of the individual was estimated as between twenty-four and twenty-eight centimetres. Only the skull shows osteoderms and the authors suggest this was a common developmental stage of all nodosaurids, together with a long middle section of the snout which is characterised by a unique cross-pattern of the bone plates, probably formed by the triangular osteoderms of the maxillae.Propanoplosaurus was by the describers assigned to the Nodosauridae.


Rebbachisauridae is a family of sauropod dinosaurs known from fragmentary fossil remains from the Cretaceous of South America, Africa, North America, and Europe.


Rhabdodontidae is a family of herbivorous ornithopod dinosaurs that first appeared during the late Barremian of Spain, 129.4–125.0 million years ago, in the middle of the Lower Cretaceous. With their deep skulls and jaws, Rhabdodontids were similar to large, robust iguanodonts. The family was first proposed by David B. Weishampel and colleagues in 2003. Rhabdodontid fossils have been mainly found in Europe in formations dating to the Late Cretaceous.

The defining characteristics of the clade Rhabdodontidae include the spade-shape of the teeth, the presence of three or more premaxillary teeth, the distinct difference between the two maxillary and dentary teeth ridge patterns, and the uniquely shaped femur, humerus, and ulna. Members of Rhabdodontidae have an adult body length of 1.6 to 6.0 meters.

The Dinosauria

The Dinosauria is an extensive book on dinosaurs, compiled by David B. Weishampel, Peter Dodson, and Halszka Osmólska. It has been published in 2 editions, with the first edition published in 1990, consisting of material from 23 scientists. The second, greatly revised edition, was published in 2004, with material from 43 scientists. Both editions were published by University of California Press.

The book covers a wide range of topics about dinosaurs, including their systematics, anatomy, and history. It has been lauded as "the best scholarly reference work available on dinosaurs" and "an historically unparalleled compendium of information" and by Padian (1991) as a "monumental work" which features the work of 23 dinosaur specialists: "an instant classic".


Zalmoxes is an extinct genus of rhabdodontid ornithopod dinosaur from the Maastrichtian of Romania. The genus is known from specimens first named as the species Mochlodon robustum in 1899 by Franz Nopcsa before being reclassified as Rhabdodon robustum by him in 1915. In 1990 this name was corrected to Rhabdodon robustus by George Olshevsky, and in 2003 the species was once more reclassified, this time as the type species Zalmoxes robustus. Zalmoxes refers to the Dacian deity Zalmoxis, and robustus to the robustness of the remains. In 2003 another species was named, Zalmoxes shqiperorum, named for the Albanian name for Albanians.


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