我在岛上见过的许多生物中，两栖副栉龙有一些很有趣的适应性特征。像所有副栉龙一样，两栖副栉龙也长有标志性的冠状嵴。 刚开始它十分温顺，因此我能在不打扰它的情况下接近它。然而，一旦受到惊吓，副栉龙就会发出警示信号扩散到周边地区，警告危险靠近。 副栉龙位于食物链的底层，这里的一切生物都想杀掉它，不管是人类还是动物，这也说明副栉龙天性容易受惊。所以副栉龙就是皮革和鲜肉的绝佳来源，只要你能追上它并杀死它。
大多数部落的人都认为副栉龙是可以驯服的生物中最没用的一种。但我曾认识一个有趣的女士，她就驯了一群副栉龙。她认为许多人忽视了这个物种的潜力，有一天她甚至还为我的副栉龙做了一个做工精致的鞍。 作为一种相对简单的驯化生物，副栉龙通常是许多部落获得的第一个坐骑。它能持久地长距离奔跑，使它成为了有用的驮畜，尽管它几乎无力保护自己自己和骑手。 然而，一些小动物会被副栉龙的号角般的鸣叫吓跑，尽管它不会造成任何伤害。副栉龙的负重能力也很强，对于游牧部落来说非常有益，这也是副栉龙在岛上证明自己存在价值的方式。
Common name: Parasaur
Species: Parasaurolophus amphibio
Time: Late Cretaceous
Parasaurolophus amphibio has one of the more interesting adaptations of any creature I've seen on the Island. Like all Parasaur, it has a signature crest on its head. Very docile at first, I've been able to approach the creature without disturbing it. If startled, however, the creature can vocalize a distress call to the surrounding area that warns of danger. Parasaurolophus appears to be low on the food chain and is hunted by everything, creatures and humans alike, which explains its skittish nature. It is a good source of meat and hide, if you can manage to keep up with it long enough to kill it.
Despite being what most tribes consider a relatively useless creature to tame, I once met an interesting woman who had tamed an entire herd of them. She informed me that many overlooked the creature's potential. She even graciously gifted me a fancy saddle to put on my own Parasaurolophus one day. As a relatively simple creature to domesticate, Parasaurolophus is commonly one of the first mounts a tribe will be able to acquire. Its ability to run relatively fast for lengthy intervals makes it a solid mode of medium-range transportation, though it has almost no ability to defend itself or its rider in a traditional sense. Smaller creatures, however, appear to be frightened by the horn of Parasaurolophus although it doesn't do much damage. It also has decent weight-bearing capabilities, which could prove useful for nomadic tribes as they work to establish a presence on the Island.