Ichthyosaurs had a higher chance of being preserved than did terrestrial creatures because , as marine animals , they tended to live in environments less subject to erosion 鱼龙比起陆地的动物有更大的几率被保存下来，因为它们作为海洋动物常生活在腐蚀性较小的环境中。
2.
They included such beasts as giant ichthyosaurs that might have reached 25 meters in length and plesiosaurs with seven - meter - long necks reminiscent of the fabled loch ness monster in scotland 这些动物包括有着25米长庞大身躯的鱼龙和让人想起苏格兰尼斯湖怪兽故事的有着七米长脖子的蛇颈龙。
3.
But these factors do not account for the interesting question of how there came to be such a concentration of pregnant ichthyosaurs in a particular place very close to their time of giving birth 但是这些事实不能解释这个令人感兴趣的问题，就是为什么在一个特殊的靠近他们出生的地方如此的集中了这么多怀孕的鱼龙。
4.
The area where it was found had been a deep tropical bay during the jurassic period . the world ' s relatively shallow seas between 230 million and 65 million years ago contained several large animals , such as the plesiosaur with a 20 - foot neck and the giant ichthyosaurs that could be 75 - feet long 报道说，在2 . 3亿年至6500万年前，世界一些浅海地区曾生活着一些体型巨大的动物，如脖子长达20英尺约合6 . 01米的蛇颈龙以及身长可达75英尺约合22 . 86米的巨大鱼龙等。
