Trend Results : Cretaceous

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Amphibians and Squamates From Maastrichtian Cretaceous Iberia

Late Cretaceous (Maastrichtian) amphibians and squamates from northeastern IberiaAuthors:Blanco et alAbstract:Maastrichtian biodiversity of medium- and large-sized terrestrial vertebrates is well known in Europe and, specifically, in the Iberian Peninsula. Show More Summary

Local PaleoTemperatures Varied Between 17.7 C (64 F) to 42.3 C (109 F) at Late Cretaceous Coastal Laos

Reconstruction of Late Cretaceous coastal paleotemperature from halite deposits of the Late Cretaceous Nongbok Formation (Khorat Plateau, Laos)Authors:Zhang et alAbstract:Cretaceous evaporites of the Maha Sarakhan Formation in Thailand (e.g., the Nongbok Formation, Laos) have been studied for almost a century as the huge potash deposits in the world. Show More Summary

Were the Tidal Flats of Maastrichtian Cretaceous Catalonia a Safe Haven for Sauropods From Theropods?

Transitional environments of the lower Maastrichtian South-Pyrenean Basin (Catalonia, Spain): The Fumanya Member tidal flatAuthors:Oms et alAbstract:Sedimentological, palaeontological and geochemical data provide detailed evidence of a marine-to-lagoon environmental succession around the Campanian-Maastrichtian boundary in the Ibero-Armorican domain. Show More Summary

Coniacian Cretaceous Antarctic Flora Suggest a Warm Temperate to Tropical PaleoClimate

Late Cretaceous flora of the Hidden Lake Formation, James Ross Island (Antarctica), its biostratigraphy and palaeoecological implicationsAuthors:Kva?ek et alAbstract:Plant fossils from the volcano-clastic marine deposits of the Coniacian Hidden Lake Formation of James Ross Island in Antarctica are described based on their macromorphology. Show More Summary

Tracing the Family Tree of the Brachylophosaurini

New Dinosaur Species from Montana – Probrachylophosaurus The Hadrosaurs, commonly referred to as the “duck-billed” dinosaurs were a highly successful group of Cretaceous ornithischian dinosaurs that dominated the mega fauna of most of Asia, North America and Europe towards the end of the Mesozoic.  Many different types of genera are known and there is a […]

Splitter Attack! Late Cretaceous/Paleocene Eutherian Mammals Split, One Recognized at 'Ancestral' to Creodonts

A revision of the Late Cretaceous–Paleocene eutherian mammal Cimolestes Marsh, 1889Author:FoxAbstract:Cimolestes Marsh is a North American eutherian mammal primarily known from latest Cretaceous deposits in Alberta, Wyoming, Saskatchewan, and Montana. Show More Summary

Mortuneria: an Anarctic Filter Feed Maastrichtian Cretaceous Pleisosaur

If you’ve ever flipped through a book of prehistoric creatures or ambled through a major museum’s fossil halls, you’ve probably seen a plesiosaur. These were the four-flippered marine reptiles that patrolled the seas for almost the entire Mesozoic era, some 250 to 66 million years ago. Show More Summary

Evidence of an Early Cenomanian Cretaceous “Hot Greenhouse” Paleoclimate

Early Cenomanian “hot greenhouse” revealed by oxygen isotope record of exceptionally well-preserved foraminifera from TanzaniaAuthors:Ando et alAbstract:The search into Earth's mid-Cretaceous greenhouse conditions has recently been stimulated...Show More Summary

In a Flap over an “Ostrich Mimics” Feathers

A Densely Feathered Ornithomimid from Dinosaur Provincial Park Published in the scientific journal “Cretaceous Research”, why is everybody so excited about the discovery of yet another fossil of a Theropod that shows feathers (at least integumental structures which include feathers)?  Lots of media coverage on this fossil discovery, so why such a flap? The answer […]

Cimoliopterus dunni: a new Toothed Pterosaur From Cenomanian Cretaceous Texas

First North American occurrence of the toothed pteranodontoid pterosaur CimoliopterusAuthor:MyersAbstract:A new pterosaur species, Cimoliopterus dunni, sp. nov., is described based on a partial rostrum from the upper Cenomanian Britton Formation in the Eagle Ford Group of north-central Texas. Show More Summary

T. Rex Bone Holds Clues To Dinosaur's Cannibalistic Ways

3 weeks agoNews : Huffington Post

All animals likely feared the carnivorous Tyrannosaurus rex in Cretaceous times -- even their own kind. A 66-million-year-old fossilized tyrannosaur bone unearthed in Wyoming's Lance Formation in June is providing new evidence that T. Show More Summary

New Feathered Dinosaur From Alberta

A densely feathered ornithomimid (Dinosauria: Theropoda) from the Upper Cretaceous Dinosaur Park Formation, Alberta, Canada. Cret. Res. Illo by Julius Csotonyi The discovery of an Ornithomimus with preserved tail feathers and soft tissue is shedding light on the convergent evolution of these dinosaurs with ostriches relating to thermoregulation. Show More Summary

Dakotaraptor steini: a new Maastrichtian Cretaceous FEATHERED Giant Raptor

THE FIRST GIANT RAPTOR (THEROPODA: DROMAEOSAURIDAE) FROM THE HELL CREEK FORMATIONAuthors:DePalma et alAbstract:Most dromaeosaurids were small- to medium-sized cursorial, scansorial, and arboreal, sometimes volant predators, but a comparatively small percentage grew to gigantic proportions. Show More Summary

Unique feeding mechanism among marine reptiles from the age of dinosaurs

Fossils of the elasmosaur Aristonectes were first reported from the Late Cretaceous of Patagonia in 1941. Recent discoveries in Chile and on Seymour Island (Antarctica) have provided much new information on this elasmosaur and the closely related Morturneria, respectively. Show More Summary

Tototlmimus packardensis: an new Ornithomimid Dinosaur From Upper Cretaceous Mexico

A new ornithomimid dinosaur from the Upper Cretaceous Packard Shale formation (Cabullona Group) Sonora, MéxicoAuthors:Serrano-Brañas et alAbstract:New ornithomimid material discovered from the Upper Cretaceous Packard Shale Formation, (Cabullona Group) of Sonora, Mexico is described. Show More Summary

Triconodont and Multituberculate Mammals Found in Lower Cretaceous Japan

New mammalian specimens from the Lower Cretaceous Kitadani Formation, Tetori Group, Fukui, JapanAuthors:Miyata et alAbstract:New specimens of two non-therian (non-tribosphenidan) mammals are described from the Lower Cretaceous Kitadani Formation in the upper part of the Tetori Group, Katsuyama, Fukui Prefecture, Japan. Show More Summary

Arvinachelys goldeni, New Fossil Baenid Turtle from Utah

A new species of baenid turtle from the Kaiparowits Formation (Upper Cretaceous: Campanian) of southern Utah. Lively, J.R. 2015. Journal of Vertebrate Paleontology. An artist's depiction of the turtle Arvinachelys goldeni as it would have appeared in life 76 milion years ago in southern Utah. Show More Summary

The Environment of the High Arctic During the Late Cretaceous

Environmental Constraints on Terrestrial Vertebrate Behaviour and Reproduction in the High Arctic of the Late CretaceousAuthors:Herman et alAbstract:Reconstructions of temperature and moisture regimes based on fossil leaves, combined...Show More Summary

Las Hoyas Provides Scientists with a “Furry Friend”

Cute Ancient Mammal Lived in Tough Cretaceous Times A superbly preserved fossil of an early type of mammal found in sediments that date from 125 million years ago (Early Cretaceous), demonstrates that mammals had effectively evolved the same type of fur seen in extant mammals today.  Many of these mammals may have been very small, […]

Somewhere in the world right now a PhD student is working on a...

Somewhere in the world right now a PhD student is working on a thesis entitled Tyrannosaurus rex: Cretaceous Period Fitness Fanatic. Don’t let those tiny forelimbs fool you. It turns out the T. rex had surprisingly impressive upper body strength. Show More Summary

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