符合的藏品

共找到 5 筆符合的資料

脊椎動物化石哺乳動物概論

and few in number. They were no match for dinosaurs, the large reptiles that ruled the surface.....more

1/5

surface so they can grind up large amounts of food. The way that each cheek teeth grows one after.....more

2/5

of pits, or effaced. Pygidium with 2 to 4 pairs of pleural ribs and spines; axial rings few. Surface.....more

3/5

pairs of prominent flat spines. Surface smooth or finely granulose. Bertillon pattern strong.....more

4/5

furrows broad; border furrow shallow or obsolete, border narrow or absent. Surface with granules.....more

5/5