| A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China | |
| Alternative Title | A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China |
| Hou Shilin1; Meng Jin3 | |
| 2014 | |
| Source Publication | CHINESE SCIENCE BULLETIN
 |
| ISSN | 1001-6538 |
| Volume | 59Issue:5-6Pages:546-553 |
| Abstract | A new genus and species of eutriconodont mammal, Chaoyangodens lii gen. et sp. nov., from the Dawangzhangzi bed of Yixian Formation, Lingyuan, Liaoning, is reported. The new species has a tooth formula I5-C1-P1-M3/i4-c1-p1-m4, unique among eutriconodonts in having only one premolar in lower and upper jaws, respectively, and a distinctive diastema between the canine and the premolar. Its simple incisors and reduced premolars show a mosaic combination of primitive and derived features. This new taxon adds to the diverse group of Jehol eutriconodonts. Among the known species from at least three horizons, there seems no evolutionary trend in morphology that is recognizable, except for that larger species are all from the Lujiatun bed of the Yixian Fm. A thorough and systematic analysis involving all the Jehol eutriconodonts is needed to understand their phylogenetic relationships. |
| Other Abstract | A new genus and species of eutriconodont mammal,Chaoyangodens lii gen.et sp.nov.,from the Dawangzhangzi bed of Yixian Formation,Lingyuan,Liaoning,is reported.The new species has a tooth formula I5-C1-P1-M3/i4-c1-p1-m4,unique among eutriconodonts in having only one premolar in lower and upper jaws,respectively,and a distinctive diastema between the canine and the premolar.Its simple incisors and reduced premolars show a mosaic combination of primitive and derived features.This new taxon adds to the diverse group of Jehol eutriconodonts.Among the known species from at least three horizons,there seems no evolutionary trend in morphology that is recognizable,except for that larger species are all from the Lujiatun bed of the Yixian Fm.A thorough and systematic analysis involving all the Jehol eutriconodonts is needed to understand their phylogenetic relationships. |
| Keyword | OSSIFIED MECKELS CARTILAGE TRICONODONT MAMMALS MIDDLE-EAR NORTHEAST CHINA AGE EVOLUTION GOBICONODON DINOSAURS ALBERTA ORIGIN Eutriconodonta Mammalia Jehol Biota Early Cretaceous Liaoning China |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Basic Research Program of China] ; [Public Science and Technology Research Funds Projects of Land and Resources] ; [National Natural Science Foundation of China] ; [American Museum of Natural History, New York] |
| CSCD ID | CSCD:5056376 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/145886 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.东北大学 2.中国科学院金属研究所 3.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 4.中国科学院 |
| Recommended Citation GB/T 7714 | Hou Shilin,Meng Jin. A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China[J]. CHINESE SCIENCE BULLETIN,2014,59(5-6):546-553. |
| APA | Hou Shilin,&Meng Jin.(2014).A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China.CHINESE SCIENCE BULLETIN,59(5-6),546-553. |
| MLA | Hou Shilin,et al."A new eutriconodont mammal from the early Cretaceous Jehol Biota of Liaoning, China".CHINESE SCIENCE BULLETIN 59.5-6(2014):546-553. |
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