Results 31 to 40 of about 9,024 (216)

The first description of dinosaurian eggshell from the Maastrichtian Lance Formation, Wyoming, North America [PDF]

Acta Palaeontologica Polonica
Although numerous fossils have been excavated and described from the Upper Cretaceous (Maastrichtian) Lance Formation, eggs and eggshell remains are rare and have yet to be described in detail.
Tom T.P. Van Der Linden, Jonathan J.W. Wallaard, Maarten De Rijke, René H.B. Fraaije   +3 more
doaj   +1 more source

Multiple Orbitoides d’Orbigny lineages in the Maastrichtian? Data from the Central Sakarya Basin (Turkey) and Arabian Platform successions (Southeastern Turkey and Oman)

Swiss Journal of Palaeontology, 2021
The standard reconstruction of species of Orbitoides d’Orbigny into a single lineage during the late Santonian to the end of the Maastrichtian is based upon morphometric data from Western Europe.
Ercan Özcan, Ali Osman Yücel, Rita Catanzariti, Sibel Kayğılı, Aral I. Okay, Michael D. Simmons, Johannes Pignatti, İftikhar Ahmed Abbasi, Ümitcan Erbil   +8 more
doaj   +1 more source

The first notosuchian crocodyliform from the Araçatuba Formation (Bauru Group, Paraná Basin), and diversification of sphagesaurians

Anais da Academia Brasileira de Ciências, 2021
The mesoeucrocodylian record from the Bauru Group (Paraná Basin, Brazil) comes from three formations: Adamantina (Late Turonian–Early Maastrichtian), Presidente Prudente (Early Campanian–Early Maastrichtian) and Marília (Maastrichtian). These records are
ANDRÉ EDUARDO P. PINHEIRO, LUCY G. DE SOUZA, KAMILA L.N. BANDEIRA, ARTHUR S. BRUM, PAULO VICTOR LUIZ G.C. PEREIRA, LUÍS OTÁVIO R. DE CASTRO, RENATO R.C. RAMOS, FELIPE M. SIMBRAS   +7 more
doaj   +1 more source

Dercetid fishes from the Maastrichtian type area (Upper Cretaceous) of Belgium and the Netherlands

Acta Palaeontologica Polonica
The family Dercetidae comprises a diverse array of marine aulopiform actinopterygians. Until now, merely seven specimens, assigned to five species, were recorded from the Maastrichtian type area.
Jelle J.A. Heere, Jonathan J.W. Wallaard, Maarten De Rijke, John W.M. Jagt   +3 more
doaj   +1 more source

Genus Sororistirps (Porifera, Hexactinellida, Ventriculitidae) [PDF]

Известия Саратовского университета. Новая серия: Серия Науки о Земле
Representatives of the genus Sororistirps, distinguished among the Ventriculites, have been detected in the Santonian – Maastrichtian rocks from the southeast of the Russian Plate.
Pervushov, Evgeniy Mikhaylovich
doaj   +1 more source

THE EVOLUTIONARY LINEAGES OF THE MAASTRICHTIAN PLANKTIC FORAMINIFERA GENUS Plummerita IN THE TETHYS [PDF]

Science Heritage Journal
Five phylogenetic lineages were observed by present author in the eleven Tethyan Maastrichtian planktic foraminiferal species of the genus Plummerita. These lineages help to define the major faunal changes from the species throughout of three groups of ...
Haidar Salim Anan
doaj   +1 more source

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

The Anatomical Record, EarlyView.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt, M. Grace Burton, Mathew J. Wedel, Juan Benito, Ellen Fricano, Daniel J. Field   +5 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

A fossil assemblage from the mid-late Maastrichtian of Gavdos Island, Greece, provides insights into the pre-extinction pelagic ichthyofaunas of the Tethys.

PLoS ONE, 2022
The global body-fossil record of marine 'fishes' from the time interval immediately preceding the Cretaceous-Paleogene Extinction is markedly poor. This deficiency appears to be further exacerbated with regards to offshore and deep-water taxa, obscuring ...
Thodoris Argyriou, Apostolos Alexopoulos, Jorge D Carrillo-Briceño, Lionel Cavin   +3 more
doaj   +2 more sources

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