Results 41 to 50 of about 9,098 (223)

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Carbon isotope record of 3 profiles from Campanian-Maastrichtian

, 2012
Carbon-isotope stratigraphy has proven to be a powerful tool in the global correlation of Cretaceous successions. Here we present new, high-resolution carbon-isotope records for the Global Boundary Stratotype Section and Point (GSSP) of the Maastrichtian
Andrew S Gale (7975793), Gale, Andrew S, Silke Voigt (6976127), Jung, Claudia, Jenkyns, Hugh C, Claudia Jung (6976124), Voigt, Silke, Hugh C Jenkyns (6964514)   +7 more
core   +1 more source

A new meiolaniform turtle from the Maastrichtian of Northern Patagonia, Argentina

Acta Palaeontologica Polonica
Meiolaniformes are a group of chelonians including the famous horned-turtles Niolamia argentina (Patagonia) and Meiolania platyceps (Australia). In South America, the Late Cretaceous meiolaniforms are represented by two named taxa: Patagoniaemys ...
Federico L. Agnolin, Mauro Aranciaga Rolando, Juliana Sterli, Nicolás R. Chimento, Fernando E. Novas, Gonzalo L. Muñoz   +5 more
doaj   +1 more source

Planktonic foraminiferal and paleoenvironments of the Upper Campanian-Maastrichtian succession in Wadi Qena, Egypt

Egyptian Journal of Petroleum, 2019
Quantitative analysis of the Upper Campanian-Maastrichtian foraminiferal assemblages in Hawashiya and Umm Omeiyied exposed sections at Wadi Qena, Eastern Deseret, Egypt is reconstructed to study the paleoenvironments and relative sea level changes.
Abdel Galil A. Hewaidy, Sherif Farouk, Medhat M.M. Mandur, Ibrahim S. El Agroudy   +3 more
doaj   +1 more source

Anatomy and variation in the paraphyletic Mosasaurus lemonnieri assemblage from the Craie phosphatée de ciply, Belgium

The Anatomical Record, EarlyView.
Abstract Nineteenth century excavations of the Ciply‐Malogne Phosphatic Chalk Formation in Hainaut, Belgium, yielded over 50 partial mosasaur skeletons, the majority of which were referred to the species Mosasaurus lemonnieri Dollo, 1889. In the years since, this taxon has experienced a complicated taxonomic history, and its exceptional hypodigm has ...
Henry S. Sharpe, Hallie P. Street‐Sampson, Takuya Konishi, Michael W. Caldwell   +3 more
wiley   +1 more source

Unravelling the widening of the earliest Andean northern orogen: Maastrichtian to early Eocene intra‐basinal deformation in the northern Eastern Cordillera of Colombia [PDF]

, 2021
The onset of deformation in the northern Andes is overprinted by subsequent stages of basin deformation, complicating the examination of competing models illustrating potential location of earliest synorogenic basins and uplifts.
Gómez Marulanda, Sebastián, Germán Bayona, Baquero, Mauricio, Cárdenas-Rozo, Andrés, Camilo Montes, Rodríguez, Guillermo, Salazar A.M., Martinez Guerrero, Christian Alexander, Bayona, Germán, Ramírez C., Jaramillo C., Jaramillo, Carlos, Nova G., Andrés L. Cárdenas‐Rozo, Edward Duarte, Montes C., Pardo A., Cardona A., Manuela Tabares, Rodríguez G., Cárdenas-Rozo A.L., Guillermo Rodríguez, Agustín Cardona, Ramírez, Catalina, Montes, Camilo, Baquero M., Tabares M., Bayona G., Catalina Ramírez, Duarte E., Pardo, Andrés, Giovanny Nova, Salazar, Ana, Cardona, Agustín, Ana M. Salazar, Tabares, Manuela, Gómez Marulanda S., Caballero, Victor, Andrés Pardo, Carlos Jaramillo, Duarte, Edward, Plata A., Plata, Angelo, Angelo Plata, Nova, Giovanny, Sebastián Gómez Marulanda, Caballero V., Mauricio Baquero, Victor Caballero   +48 more
core   +1 more source

Assessment of intraspecific skull variation in the Campanian baenid turtle Plesiobaena antiqua

The Anatomical Record, EarlyView.
Abstract Baenids are freshwater paracryptodiran turtles with a fossil record ranging from the Early Cretaceous to the Eocene. The baenid Plesiobaena antiqua is the most common turtle in the Campanian (Late Cretaceous) Dinosaur Park Formation in Canada, but the apparent intraspecific variation remains poorly understood.
Scott Bellotti, Donald D. Brinkman, Serjoscha W. Evers, Walter G. Joyce, Yann Rollot   +4 more
wiley   +1 more source

Foraminifera from the Campanian–Maastrichtian of the Miriri Sub-Basin, Paraíba Basin, Brazil: implications for biostratigraphy and paleoenvironmental reconstruction [PDF]

Anais da Academia Brasileira de Ciências
This study investigates the core RT-01-PB from the Miriri Sub-Basin, Paraíba Basin, analyzing planktic and benthic foraminifera from the upper Campanian to lower Maastrichtian. The strata belong to the Itamaracá and Gramame formations. Lithostratigraphic,
HOLES P. DE SANTANA, ROBBYSON M. MELO, AGATHE A. NOUCOUCOUK, CLEIDE REGINA MOURA, ENELISE KATIA PIOVESAN   +4 more
doaj   +1 more source

Redescription of †Eobrasilia coutoi (Metatheria: Polydolopimorphia), a unique sclerocarpophagous metatherian from the Palaeogene of South America: Systematic affinities, and paleoecological and evolutionary implications

The Anatomical Record, EarlyView.
Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro, Hugo Bampi, Ana C. Bernardes‐Dias, Lidiane Asevedo, João P. P. Araújo, Matheus R. Arêas, Alessandra S. Machado, Ricardo T. Lopes, Rafael C. Silva, Marina B. Soares, Gustavo R. Oliveira   +10 more
wiley   +1 more source