| 作者 (Author) | Brown, Charlotte Lewis |
| Summary: This book is an introduction to the mammals that ruled Earth after the dinosaurs. | |
| 等级 (MML) | MM Level-3.3 |
| 年级 (IL) | Lower Grades (LG K-3) |
| 字数 (Words) | 801 |
| 类型 (Fiction) | Non-Fiction |
| 系列 (Series) | I Can Read! (HarperCollins): Level 2; |
| Topic: Animals-Dinosaurs; Animals-Extinct; | |
