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Dinosaur coloration is generally one of the unknowns in the field of paleontology, as skin pigmentation is nearly always lost during the fossilization process. However, recent studies of feathered dinosaurs and skin impressions have shown the colour of some species can be inferred through the use of melanosomes , the colour-determining pigments ...
Birds are avian dinosaurs, and in phylogenetic taxonomy their over 11,000 extant species are included in the group Dinosauria. Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the ...
Spinosaurus (/ ˌspaɪnəˈsɔːrəs /; lit.'spine lizard') is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago. [ 2 ] The genus was known first from Egyptian remains discovered in 1912 and described by German palaeontologist Ernst ...
Welles, 1954. Dilophosaurus (/ daɪˌloʊfəˈsɔːrəs, - foʊ -/ [1] dy-LOH-fə-SOR-əs, -foh-) is a genus of theropod dinosaurs that lived in what is now North America during the Early Jurassic, about 186 million years ago. Three skeletons were discovered in northern Arizona in 1940, and the two best preserved were collected in 1942.
Velociraptor (/ vəˌlɒsɪˈræptər, vəˈlɒsɪræptər /; [1] lit. 'swift thief') is a genus of small dromaeosaurid dinosaurs that lived in Asia during the Late Cretaceous epoch, about 75 million to 71 million years ago. Two species are currently recognized, although others have been assigned in the past.
Voris et al., 2020. Tyrannosaurus torosus Paul, 1987. Daspletosaurus (/ dæsˌpliːtəˈsɔːrəs / das-PLEET-ə-SOR-əs; meaning "frightful lizard") is a genus of tyrannosaurid dinosaur that lived in Laramidia between about 78 and 74.4 million years ago, during the Late Cretaceous Period. The genus Daspletosaurus contains three named species.
Ceratopsia or Ceratopia (/ ˌsɛrəˈtɒpsiə / or / ˌsɛrəˈtoʊpiə /; Greek: "horned faces") is a group of herbivorous, beaked dinosaurs that thrived in what are now North America, Europe, and Asia, during the Cretaceous Period, although ancestral forms lived earlier, in the Jurassic.
The largest identified skulls of Kronosaurus dwarf those of largest known theropod dinosaurs in size. The front of the skull is elongated into a rostrum (snout). The mandibular symphysis, where the front ends of each side of the mandible (lower jaw) fuse, is elongated in Kronosaurus , and contains up to six pairs of teeth.
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