Ediacarans
نویسنده
چکیده
What are they? Ediacarans are a highly distinctive assemblage of fossil organisms, apparently all marine. Most typical are frondose, discoidal and segmented forms. Their overall taxonomic diversity is modest, but there is considerable disparity and they include one rather bizarre group with prominent three-fold body symmetry. A striking feature of many forms is their modular construction and their sometimes fractal growth pattern. Ediacarans appear in the latest Precambrian, towards the end of the Neoproterozoic, ranging between ca. 570–550 million years ago, but some of them even trickle into the Cambrian.
منابع مشابه
Kyoto Abstract Reflections on Staggered Bilateral Symmetry in Dickinsonia and other Ediacarans
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ورودعنوان ژورنال:
- Current Biology
دوره 15 شماره
صفحات -
تاریخ انتشار 2005