Bonaparteichnium (lat.) Is a species of herbivorous ornithopod dinosaurs from the Late Cretaceous of South America . The typical and only species Bonaparteichnium tali was named and described by Calvo in 1991. The family name has long been in honor of the Argentinean paleontologist Jose Fernando Bonaparte , who made a significant contribution to the study of Mesozoic vertebrates of Argentina . The species name tali (genitive case from talus , meaning "heel") is given because of the heel imprint disproportionate for ornithopods [1] .
| † Bonaparteichnium |
| Scientific classification |
|---|
| No rank : | Bilateral symmetric |
| Infraclass : | Archosauromorphs |
| No rank : | Archosauriformes |
| Infrastructure : | † Ornithopods |
| Ihnorod: | † Bonaparteichnium |
|
| International Scientific Name |
|---|
Bonaparteichnium Calvo, 1991 |
| The only one |
|---|
† Bonaparteichnium tali Calvo, 1991 |
|
The holotype ( plastotype ) MUCPv 64 (5 tracks) was found in the layers of the Rio Limay formation dated to the album by the Cenomanian (about 99–94 million years ago), Neuquen Province, Argentina [1] .
Meyer in 2000 considered the prints of Sousaichnium monettae and Bonaparteichnium tali , as the younger synonyms of Limayichnus major , which in turn is attributed to theropods [2] .
Bonaparteichnium is mainly characterized by long, wide and clear heel prints. In 1999, Calvo indicated that Bonaparteichnium's footprints were due to a gait of a dinosaur that left metatarsus prints when walking and considered Bonaparteichnium nomen vanum and the younger synonym of Limayichnus . Dias-Martinez and colleagues believe that the Bonaparteichnium metarasal prints indicate that the shape of the track is due to the behavior of the dinosaur and / or the characteristics of the substrate. Thus, this taxon is tafotaxone and should not be considered as ichnotaxonomically valid. The authors consider Bonaparteichnium as nomen dubium [3] .
- ↑ 1 2 JO Calvo. 1991. Huellas de dinosaurios en la Formacion Rio Limay (Albiano-Cenomaniano?), Picun Leufu, Provincia de Neuquen, Republica Argentina. (Ornithischia-Saurischia: Sauropoda-Theropoda) [Dinosaur footprints in the Rio Limay Formation (Albian-Cenomanian?), Picun Leufu, Neuquen Province, Argentine Republic. (Ornithischia-Saurischia: Sauropoda-Theropoda)]. Ameghiniana 28 (3-4): 241-258
- ↑ Meyer CA (2000) The Rio Limay vertebrate ichnofauna (Cretaceous, Patagonia) revisited — evidence for a Cenomanian not Albian age of Giganotosaurus. 5th European workshop on vertebrate palaeontology, Karlsruhe, 52–53.
- ↑ Dias-Martinez, I., X. Pereda-Suberbiola, F. Perez-Lorente, JI Canudo. 2015. Ichnotaxonomic review of large ornithopod dinosaur tracks: temporal and geographic implications. PLoS ONE 10 (2): e0115477.