食草恐龙的主要食物可能是马尾草，这是一种类似于蕨类的植物，在史前的沼泽地带大量存在，营养丰富。
A staple part of the vegetarian dino-diet was probably horsetails, fern-like plants that were abundant in prehistoric swamps and highly nutritious.
在新西兰，这种植物传播地很快，它将沼泽地的边缘变成了广阔的盐土草地，并且使利用那片沼泽（生存）的鸟类和动物的数量和种类下降。
In New Zealand the plant has spread rapidly, changing mudflats with marshy fringes to extensive salt meadows and reducing the number and kinds of birds and animals that use the marsh.
不同种类的有孔虫可同时生存于一处沼泽中，但其各自所喜好的环境仍有些许不同。
A marsh is typically home to several species of forams, which each prefer slightly different conditions.
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