目录
| 正面描述 | 登录 以查看详情 |
|---|---|
| 正面文字 | 登录 以查看详情 |
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | A highly detailed, three-dimensional fossil skeleton of an Edaphosaurus — a synapsid reptile of the Permian period — is depicted in high relief against a textured rocky matrix background, with the skeleton highlighted in rose-gold plating to simulate the appearance of fossilised bone embedded in stone. Incised fern and plant motifs are visible in the field, evoking the prehistoric landscape. The legend 'SYNAPSIDA' arcs along the upper left, with 'PERMIAN PERIOD' inscribed along the right. The lower field bears the series inscription 'EVOLUTION of Life' in mixed lettering styles, with the date '2022' below. |
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| 背面铭文 | 登录 以查看详情 |
| 边缘 | Reeded |
| 铸币厂 | 登录 以查看详情 |
| 铸造量 | 登录 以查看详情 |
| 附加信息 |
Mongolia's prehistoric-themed bullion and collector series has leaned heavily on paleontological subject matter since the early 2000s, a logical extension of the country's status as one of the world's most productive fossil beds — the Gobi has yielded synapsid material that predates anything recovered from neighboring regions. Synapsids, the mammal-like reptiles that eventually gave rise to mammals, are not typically associated with Central Asia in popular imagination, which makes this issue a pointed curatorial choice rather than an obvious one.