Large Mesozoic mammals fed on young dinosaurs

  title={Large Mesozoic mammals fed on young dinosaurs},
  author={Yaoming Hu and Jin Meng and Yuanqing Wang and Chuankui Li},
Mesozoic mammals are commonly portrayed as shrew- or rat-sized animals that were mainly insectivorous, probably nocturnal and lived in the shadow of dinosaurs. The largest known Mesozoic mammal represented by substantially complete remains is Repenomamus robustus, a triconodont mammal from the Lower Cretaceous of Liaoning, China. An adult individual of R. robustus was the size of a Virginia opossum. Here we report a new species of the genus, represented by a skeleton with most of the skull and… 

Mesozoic mammals of China: implications for phylogeny and early evolution of mammals

  • J. Meng
  • Environmental Science, Geography
  • 2014
The superb specimens from nearly all major groups of Mesozoic mammals in China provided a great amount of information that contributed to understanding on some major issues in phylogeny and the early evolution of mammals, such as divergences of mammals and the evolution of the mammalian middle ear.

The mammal fauna in the Early Cretaceous Jehol Biota: implications for diversity and biology of Mesozoic mammals

Well-preserved material helps to clarify some anatomical uncertainties in the study of early mammals, such as an ossified Meckel's cartilage as the occupant for the internal groove on the lower jaw of some Mesozoic species and a dental formula I3-C1-P3-M4/i2-c1-p2-3-m5 for gobiconodontids as suggested by dentitions of several Jehol eutriconodontans.

A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America

  • N. LongrichP. Currie
  • Environmental Science, Geography
    Proceedings of the National Academy of Sciences
  • 2009
Hesperonychus is the youngest known member of this lineage, extending the temporal range of the clade by 45 million years, and it is the first microraptorine known from North America, providing further evidence for an affinity between the dinosaur faunas of North America and Asia.

Mammalian evolution: A beast of the southern wild

  • A. Weil
  • Geography, Environmental Science
  • 2014
The anatomy of the herbivorous, large-eyed and agile creature shows that gondwanatheres were related to the better-known multituberculates, a long-lived and successful group of (now also extinct) rodent-like mammals.

Crocodyliform Feeding Traces on Juvenile Ornithischian Dinosaurs from the Upper Cretaceous (Campanian) Kaiparowits Formation, Utah

Direct evidence of feeding by a small crocodyliform on juvenile specimens of a ‘hypsilophodontid’ dinosaur from the Upper Cretaceous (Campanian) Kaiparowits Formation of southern Utah is presented.

An aggregation of lizard skeletons from the Lower Cretaceous of China

An aggregation of the Early Cretaceous lizard Dalinghosaurus longidigitus from deposits of the Yixian Formation, China contains parts of at least sixteen three-dimensional skeletons ranging from hatchling to young adult.

Postcranial Skeleton of the Cretaceous Mammal Akidolestes cifellii and Its Locomotor Adaptations

The postcranial skeleton of Akidolestes cifellii, a spalacotheroid species from the Lower Cretaceous Yixian Formation of northeastern China is described and suggests that a greater ecomorphological differentiation occurred in these stem therian mammals than previously thought and that ecological differentiation is a major pattern in early therian mammal evolution.

A small Cretaceous crocodyliform in a dinosaur nesting ground and the origin of sebecids

The discovery of the earliest sebecid worldwide, and the first from Eurasia, Ogresuchus furatus gen. et sp.

Paleontological discoveries in the Chorrillo Formation (upper Campanian-lower Maastrichtian, Upper Cretaceous), Santa Cruz Province, Patagonia, Argentina

The first fossil remains of vertebrates, invertebrates, plants and palynomorphs of the Chorrillo Formation (Austral Basin), about 30km to the SW of the town of El Calafate (Province of Santa Cruz),




  • Robert T Barker
  • Environmental Science, Geography
    Evolution; international journal of organic evolution
  • 1971
The fossil evidence strongly suggests that no small dinosaurs ever existed in either Jurassic or Cretaceous, and the most convincing proof of the lack of truly small dinosaur species is their absence in the carefully studied microvertebrate concentrates.

Evolutionary patterns in the history of Permo-Triassic and Cenozoic synapsid predators

This overview of synapsid predators emphasizes terrestrial species of large size, and their adaptations for killing and feeding, rather than locomotion, and there are parallel trends over time toward increased body size and hypercarnivory that likely result from a combination of interspecific competition and energetic constraints.


  • W. Xiao
  • Biology, Environmental Science
  • 2004
G. lujiatunensis displays a few features similar to those of basal birds, such as caudals significantly elongated, semilunate carpal small and primarily contacting metacarpal II, and manual digit I short, providing further evidence for a close relationship between the Dromaeosauridae and the Aves.

The Early Cretaceous mammal Gobiconodon (Mammalia, Triconodonta) from the Cloverly Formation in Montana

ABSTRACT Gobiconodon ostromi, sp. nov., described from two partial skeletons collected from the Cloverly Formation in southcentral Montana, is closely related to Gobiconodon borissiaki Trofimov

Walker's mammals of the world

From aardwolves and bandicoots to yapoks and zorillas, Ernest P. Walker's Mammals of the World is the most comprehensive-the pre-eminent-reference work on mammals. Now, completely revised and

A new family of primitive mammal from the Mesozoic of western Liaoning, China

This animal has several derived characteristics, such as well-developed dentary/squamosal articulation, reduced number of tooth, differentiation of premolars and molars in postcanine teeth, and presence of a dorsal process of the premaxilla that is not in contact with the nasal.


Abstract Largely fragmentary fossils from sites in New South Wales, Victoria, and Queensland, Australia document terrestrial and marine vertebrate faunas of Aptian–Albian age. The natural cast of a

Energetic constraints on the diet of terrestrial carnivores

It is shown, by reviewing the most common live prey in carnivore diets, that there is a striking transition from feeding on small prey to large prey (near predator mass), occurring at predator masses of 21.5–25 kg, and the predicted maximum mass that an invertebrate diet can sustain is predicted.

An exceptionally preserved Lower Cretaceous ecosystem

Findings include feathered theropod dinosaurs and early birds, which provide additional, indisputable support for the dinosaurian ancestry of birds, and much new evidence on the evolution of feathers and flight.

Body size in mammalian paleobiology : estimation and biological implications

A discussion and recommendations for body-mass estimation and methods and problems in estimating body size in fossil primates W. Jungers and B. MacFadden.