anaspid 的定义
Paleontology.
- any member of an extinct order, Anaspida, of small, freshwater jawless fishes of the Silurian and Devonian periods, characterized by a single nostril, narrow rows of scales, and, usually, an armor-plated head.
🎓大学词汇虾夷类虾米虾夷族虾夷
Paleontology.