| Ligabueichnium | |
|---|---|
Trace fossil classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | † Ornithischia |
| Clade: | † Thyreophora |
| Clade: | † Ankylosauria |
| Ichnogenus: | † Ligabueichnium Leonardi, 1984 |
Ligabueichnium is an ichnogenus of dinosaur footprint, probably made by ankylosaurs. [1] [2]
The Late Jurassic is the third epoch of the Jurassic Period, and it spans the geologic time from 161.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.
Coeluridae is a historically unnatural group of generally small, carnivorous dinosaurs from the late Jurassic Period. For many years, any small Jurassic or Cretaceous theropod that did not belong to one of the more specialized families recognized at the time was classified with the coelurids, creating a confusing array of 'coelurid' theropods that were not closely related. Although they have been traditionally included in this family, there is no evidence that any of these primitive coelurosaurs form a natural group with Coelurus, the namesake of Coeluridae, to the exclusion of other traditional coelurosaur groups.
Arctosaurus is an extinct genus of archosauromorph, possibly an allokotosaurian, but was often classified as a sauropodomorph dinosaur between 1900 and 1976. Although it has also been classified as a theropod, recent review finds that the similarities it shares with theropods are spread throughout several groups of Late Triassic reptiles, and so it cannot be assigned any more specifically than to Archosauriformes. Other authors have suggested trilophosaurian affinities. Based on the size of the vertebra, a size of about 1.5 metres (4.9 ft) in length is extrapolated.
Epanterias is a dubious genus of theropod dinosaur from the Tithonian age Upper Jurassic upper Morrison Formation of Garden Park, Colorado. It was described by Edward Drinker Cope in 1878. The type species is Epanterias amplexus. This genus is based on what is now AMNH 5767, parts of three vertebrae, a coracoid, and a metatarsal. Although Cope thought it was a sauropod, it was later shown to be a theropod. Gregory S. Paul reassessed the material as pertaining to a large species of Allosaurus in 1988. Other authors have gone further and considered E. amplexus as simply a large individual of Allosaurus fragilis. In 2010, Gregory S. Paul and Kenneth Carpenter noted that the E. amplexus specimen comes from higher in the Morrison Formation than the type specimen of Allosaurus fragilis, and is therefore "probably a different taxon". They also considered its holotype specimen not diagnostic and classified it as a nomen dubium.
Polyonax was a genus of ceratopsid dinosaur from the late Maastrichtian-age Upper Cretaceous Denver Formation of Colorado, United States. Founded upon poor remains, it is today regarded as a dubious name.
Loncosaurus is an extinct genus of ornithopod dinosaur from the Upper Cretaceous of Provincia de Santa Cruz, Argentina. The type species is Loncosaurus argentinus, described by the famous Argentinian paleontologist Florentino Ameghino, but is considered a dubious name. Details on this animal are often contradictory, befitting a genus that was long confused for a theropod.
Dashanpusaurus is an extinct genus of sauropod dinosaur that lived during the middle of the Jurassic period. The dinosaur was described in 2005 by Peng Guangzhao, Ye Yong, Gao Yuhui, Shu Chunkang, and Jiang Shan. Its type and only species is Dashanpusaurus dongi, named in honor of the paleontologist Dong Zhiming.
Platyoposaurus was a temnospondyl from the Middle Permian epoch about 270-268 Mya.
Patagopterygiformes is an extinct group of large terrestrial ornithuromorph dinosaurs from the Late Cretaceous of South America. It contains at most three genera: Patagopteryx, Alamitornis and possibly Kuszholia.
Camptosaurichnus is an ichnogenus of footprint found in Colchagua (Chile), belonging to an Ornithopod dinosaur. It was from the Tithonian age of the Jurassic.
Dakotasaurus is an ichnogenus of dinosaur footprint.
Hadrosaurichnus is an ichnogenus of dinosaur footprint.
Ichnites is an ichnogenus of dinosaur footprint.
Iguanodontipus is an ichnogenus of dinosaur footprint.
Orcauichnites is an ichnogenus of dinosaur footprint.
Ornithopodichnites is an ichnogenus of dinosaur footprint.
Shiraminesauropus is an ichnogenus of dinosaur footprint.
Sousaichnium is an ichnogenus of dinosaur footprint.
Staurichnium is an ichnogenus of dinosaur footprint.
Tetrapodosaurus is an ichnogenus of dinosaur footprint.
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