KMS Institute of Vertebrate Paleontology and Paleoanthropology
| Growth patterns in brooding dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition | |
| Erickson, Gregory M.; Rogers, Kristina Curry; Varricchio, David J.; Norell, Mark A.; Xu, Xing; [email protected] | |
| 2007 | |
| 发表期刊 | BIOL LETTERS
 |
| ISSN | 1744-9561 |
| 卷号 | 3期号:5 |
| 摘要 | The timing of sexual maturation in non-avian dinosaurs is not known. In extant squamates and crocodilians it occurs in conjunction with the initial slowing of growth rates as adult size is approached. In birds ( living dinosaurs) on the other hand, reproductive activity begins well after somatic maturity. Here we used growth line counts and spacing in all of the known brooding non-avian dinosaurs to determine the stages of development when they perished. It was revealed that sexual maturation occurred well before full adult size was reached - the primitive reptilian condition. In this sense, the life history and physiology of non-avian dinosaurs was not like that of modern birds. Palaeobiological ramifications of these findings include the potential to deduce reproductive lifespan, fecundity and reproductive population sizes in non-avian dinosaurs, as well as aid in the identification of secondary sexual characteristics. |
| 关键词 | American Alligators Mongolia Rates Life Histology Lizards Biology Curves Nest Egg |
| URL | 查看原文 |
| 收录类别 | SCI收录 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4879 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | [email protected] |
| 推荐引用方式 GB/T 7714 | Erickson, Gregory M.,Rogers, Kristina Curry,Varricchio, David J.,et al. Growth patterns in brooding dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition[J]. BIOL LETTERS,2007,3(5). |
| APA | Erickson, Gregory M.,Rogers, Kristina Curry,Varricchio, David J.,Norell, Mark A.,Xu, Xing,[email protected].(2007).Growth patterns in brooding dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition.BIOL LETTERS,3(5). |
| MLA | Erickson, Gregory M.,et al."Growth patterns in brooding dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition".BIOL LETTERS 3.5(2007). |
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