Biology:Bohaiornis
| Bohaiornis | |
|---|---|
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| skull diagram | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Avialae |
| Clade: | †Enantiornithes |
| Family: | †Bohaiornithidae |
| Genus: | †Bohaiornis Hu et al., 2011 |
| Species: | †B. guoi
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| Binomial name | |
| †Bohaiornis guoi Hu et al., 2011
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Bohaiornis is a genus of enantiornithean birds. Fossils have been found from the Lower Cretaceous Jiufotang Formation of western Liaoning, China . The only known species, Bohaiornis guoi, was named by Dongyu Hu, Li Li, Lianhaim Hou and Xing Xu in 2011 on the basis of a fully articulated and well-preserved skeleton of a sub-adult. This specimen, LPM (Liaoning Paleontological Museum) B00167, preserved two long, ribbon-like feathers attached to the tail rather than a fan of shorter pennaceous feathers. It was similar to the slightly older Eoenantiornis, but much larger in size.[1] Bohaiornis is the type species of Bohaiornithidae, a family of large predatory enantiornitheans from the Early Cretaceous.[2]
In 2014, a second, even larger specimen was described. This second specimen (IVPP V17963) showed that the snout was relatively broad compared to other enantiornitheans, and also preserved several rock-like structures within the abdominal cavity. These were inferred to be large, rough-textured gastroliths. The presence of only a few large and rough gastroliths in birds and in other non-avian dinosaurs usually indicates a mainly carnivorous diet, suggesting that B. guoi may have had a raptorial ecology.[3] However, these structures were later found to be mineral concretions which formed after the animal had already died.[4][5]
References
- ↑ Hu, Dongyu; Li, Li; Hou, Lianhaim; Xu, Xing (2011). "A new enantiornithine bird from the Lower Cretaceous of western Liaoning, China". Journal of Vertebrate Paleontology 31 (1): 154–161. doi:10.1080/02724634.2011.546305.
- ↑ Wang M., Zhou Z.-H., O’Connor, J.K., and Zelenkov, N.V. (2014) A new diverse enantiornithine family (Bohaiornithidae fam. nov.) from the Lower Cretaceous of China with information from two new species. Vertebrata PalAsiatica, 52(1): 31-76.
- ↑ Li, Zhiheng; Zhou, Zhonghe; Wang, Min; Clarke, Julia A. (2014). "A new specimen of large-bodied basal Enantiornithine Bohaiornis from the Early Cretaceous of China and the inference of feeding ecology in Mesozoic birds" (in en-US). Journal of Paleontology 88 (1): 99–108. doi:10.1666/13-052.
- ↑ O'Connor, Jingmai (14 March 2018). "The trophic habits of early birds". Palaeogeography, Palaeoclimatology, Palaeoecology 513: 178–195. doi:10.1016/j.palaeo.2018.03.006.
- ↑ Liu, Shumin; Li, Zhiheng; Bailleul, Alida M.; Wang, Min; O’Connor, Jingmai (2021-02-19). "Investigating Possible Gastroliths in a Referred Specimen of Bohaiornis guoi (Aves: Enantiornithes)". Frontiers in Earth Science (Frontiers Media SA) 9: 62. doi:10.3389/feart.2021.635727. ISSN 2296-6463. Bibcode: 2021FrEaS...9...62L.
Wikidata ☰ Q4937994 entry
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