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(徐星); Erickson, GM (reprint author), Florida State Univ, Dept Sci Biol, Tallahassee, FL 32306 USA. | |
| 2007 | |
| 发表期刊 | BIOLOGY LETTERS
 |
| ISSN | 1744-9561 |
| 卷号 | 3期号:5页码:558—561 |
| 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. |
| URL | 查看原文 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/3295 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | Erickson, GM (reprint author), Florida State Univ, Dept Sci Biol, Tallahassee, FL 32306 USA. |
| 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]. BIOLOGY LETTERS,2007,3(5):558—561. |
| APA | Erickson, Gregory M.,Rogers, Kristina Curry,Varricchio, David J.,Norell, Mark A.,Xu, Xing,&Erickson, GM .(2007).Growth patterns in brooding dinosaurs reveals the timing of sexual maturity in non-avian dinosaurs and genesis of the avian condition.BIOLOGY LETTERS,3(5),558—561. |
| 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".BIOLOGY LETTERS 3.5(2007):558—561. |
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