出典:Wikipedia
出典:『Wikipedia』 (2011/04/24 18:47 UTC 版)
Fossils of Spriggina are known from the Ediacaran period, around 550 million years ago. The segmented organism reached about 3 cm in length and may have been predatory. Its bottom is covered with two rows of tough interlocking plates, while one row covered its top; its front few segments fused to form a head, which may have borne eyes and antennae.
| ・Spriggina | |
| ・demandatus | |
| ・precolouring | |
| ・Liscard | |
| ・babior | |
| ・Olimphus | |
| ・empty land | |
| ・bromaghim | |
| ・sonido | |
| ・uev2 |