It's a very ugly, rugose headed dinosaur.

这是一种头部多皱的丑陋恐龙。

Plankton diversified, followed by a host of suspension feeders like certain types of brachiopods, rugose corals, and bryozoans.

浮游生物多样化，随后出现大量悬浮饲养者，如某些类型的腕足动物、皱纹珊瑚和苔藓虫。

Sea levels were high, and the continents were surrounded by vast, shallow seas, full of exotic creatures like rugose corals, crinoids, and jawless fish.

海平面很高，大陆被广阔的浅海包围，充满了奇异的生物，如长皱纹珊瑚、海百合和无颌鱼。