这种物种称为沿岸拟仙女虫(Paranais litoralis)，属于一种名为贫毛类(naidids)古老蠕虫家族的一部分，通常栖息在溪流池塘边沿的松软沉积物中。

That species, Paranais litoralis, is part of an ancient family of worms called naidids that settle in thesoft sediments alongside streams and ponds.

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该科研小组通过研究从北卡罗来纳州沿岸盐沼中提取的沉积物，计算出这些海平面上升和保持稳定的交替期。

The scientific team calculated these alternating epochs of rising and steady sea levels by examining sediment cores extracted from coastal salt marshes in the state of North Carolina.

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这些沉积物是在始新世时期沉积下来的，当时南极沿岸的水温比今天高10度左右。

The sediment was laid down during the Eocene period, a time when the waters off Antarctica were about 10 degrees warmer than they are today.

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