Fossil discovery aids sinkhole researchers
By Zhao Xinying in Xi'an |
chinadaily.com.cn |
Updated: 2020-06-23 13:37
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A fusulinid shell usually ranged from 5 to 10 millimeters in length, with the smallest no more than 1 mm and the largest 30 to 60 mm. Variations of the primitive worm had a variety of appearances — plates, balls, pillars and spindles, with the spindlelike fusulinid accounting for the majority.
