Results 21 to 30 of about 226 (117)

China shares fossil treasures with the world. [PDF]

Anat Rec (Hoboken)
Abstract China has been a rich source of fossils for nearly a century, beginning with the discovery of so‐called Peking man (Sinanthropus pekinensis), known today as Homo erectus pekinensis in the mid 1920s. The first Chinese dinosaurs were described in 1929, the sauropod Helopus (now Euhelopus) and the ornithopod Tanius, described by the Swedish ...
Dodson P.
europepmc   +2 more sources

An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada [PDF]

Fossil Record, 2020
Fragmentary but associated dinosaur bones collected in 1930 from the Pine River of northeastern British Columbia are identified here as originating from an ankylosaur.
V. M. Arbour, D. Larson, M. Vavrek, L. Buckley, D. Evans, D. Evans   +5 more
doaj   +1 more source

Illuminating the dark mess of fibers: Application of circular cross polarized light in unravelling the bone tissue structure of the dermal pectoral girdle of Metoposaurus krasiejowensis. [PDF]

J Anat
Circular cross polarized light reveals the fine stucture of dermal bone tissue of a metoposaurid amphibian from the Late Triassic. Top right image shows the looped interwoven fibered bone when illuminated with circular polarized light displaying increased bone matrix intricacy compared to the same region of the bone when visualized with traditional ...
Kalita S, Teschner EM, Konietzko-Meier D.   +2 more
europepmc   +2 more sources

Bizarre tail weaponry in a transitional ankylosaur from subantarctic Chile [PDF]

Nature, 2021
Abstract Armoured dinosaurs are well known for forms that evolved specialized tail weapons: paired tail spikes in stegosaurs, and heavy tail clubs in advanced ankylosaurs1. Armoured dinosaurs from southern Gondwana are rare and enigmatic, but likely include the earliest branches of Ankylosauria2-4.
Sergio Soto‐Acuña, Alexander O. Vargas, Jonatan Kaluza, Marcelo Leppe, João Francisco Botelho, J. Palma, Carolina S. Gutstein, R Marta Fernández, Héctor Ortíz, Verónica Milla, Bárbara Aravena, Leslie M.E. Manríquez, Jhonatan Alarcón-Muñoz, Juan Pablo Pino, Christine Trevisan, Héctor Mansilla, Luis Felipe Hinojosa, Vicente Muñoz-Walther, David Rubilar-Rogers   +18 more
openaire   +4 more sources

New Ankylosaurian Cranial Remains From the Lower Cretaceous (Upper Albian) Toolebuc Formation of Queensland, Australia

Frontiers in Earth Science, 2022
Australian dinosaur research has undergone a renaissance in the last 10 years, with growing knowledge of mid-Cretaceous assemblages revealing an endemic high-paleolatitude Gondwanan fauna.
Timothy G. Frauenfelder, Phil R. Bell, Tom Brougham, Joseph J. Bevitt, Russell D. C. Bicknell, Benjamin P. Kear, Stephen Wroe, Nicolás E. Campione   +7 more
doaj   +1 more source

Function and Evolution of Ankylosaur Dermal Armor [PDF]

Acta Palaeontologica Polonica, 2010
Ankylosaurs have spike-, plate-, and club-shaped osteoderms probably used as defensive and/or offensive weapons. Previous studies have proposed the evolution and function of small ankylosaur osteoderms, but histological variations in their defensive weapons are little known.
Hayashi, Shoji, Carpenter, Kenneth, Scheyer, Torsten M, Watabe, Mahito, Suzuki, Daisuke   +4 more
openaire   +1 more source

Late Campanian-Early Maastrichtian Vertebrates From The James Ross Basin, West Antarctica: Updated Synthesis, Biostratigraphy, And Paleobiogeography

Anais da Academia Brasileira de Ciências, 2022
The Snow Hill Island Formation (SHIF; late Campanian – early Maastrichtian) crops out in the northeast of the Antarctic Peninsula and constitutes the basal part of the late Campanian-early Maastrichtian sedimentary succession of the James Ross Basin (NG ...
MARCELO A. REGUERO, ZULMA GASPARINI, EDUARDO B. OLIVERO, RODOLFO A. CORIA, MARTA S. FERNÁNDEZ, JOSÉ P. O´GORMAN, SOLEDAD GOUIRIC-CAVALLI, CAROLINA ACOSTA HOSPITALECHE, PAULA BONA, ARI IGLESIAS, JAVIER N. GELFO, MARÍA E. RAFFI, JUAN JOSÉ MOLY, SERGIO N. SANTILLANA, MAGALÍ CÁRDENAS   +14 more
doaj   +1 more source

New teeth of nodosaurid ankylosaur from the Lower Cretaceous of Southern England [PDF]

Acta Palaeontologica Polonica, 2013
We present new nodosaurid teeth from the Valanginian of Bexhill, Sussex and the Barremian of the Isle of Wight, the first from the Lower Cretaceous of the United Kingdom. Teeth found during the mid-1800s from the Valanginian and ascribed to the nodosaurid Hylaeosaurus are probably from sauropod dinosaurs.
Blows, William T., Honeysett, Kerri
openaire   +1 more source

High-Latitude Dinosaur Nesting Strategies during the Latest Cretaceous in North-Eastern Russia

Diversity, 2023
Dinosaur eggshell fragments attributed to the oofamilies Spheroolithidae and Prismatoolithidae and recovered from the latest Cretaceous Kakanaut Formation of North-eastern Russia (Chukotka) constitute one of the northernmost records of dinosaur ...
Romain Amiot, Lina B. Golovneva, Pascal Godefroit, Jean Goedert, Géraldine Garcia, Christophe Lécuyer, François Fourel, Alexei B. Herman, Robert A. Spicer   +8 more
doaj   +1 more source

Investigating the quadrupedal abilities of Scutellosaurus lawleri and its implications for locomotor behavior evolution among dinosaurs

The Anatomical Record, Volume 306, Issue 10, Page 2514-2536, October 2023., 2023
Abstract A reversion to secondary quadrupedality is exceptionally rare in nature, yet the convergent re‐evolution of this locomotor style occurred at least four separate times within Dinosauria. Facultative quadrupedality, an intermediate state between obligate bipedality and obligate quadrupedality, may have been an important transitional step in this
Lilian Anderson, Charlotte Brassey, Stuart Pond, Karl Bates, William Irvin Sellers   +4 more
wiley   +1 more source