MINIMUM AVERAGE LIFESPAN ON GRAPTOLITE Pseudisograptus
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Abstract:
A few three dimensional specimens of Pseu disograptus from the JCY area (border area between Zhejiang and Jiangxi provin ces) have nearly complete sicular and thecal increments. In the light of the gro wth rate of living Rhabdopleura and Cephalodiscus the minimum average li fespan of Pseudisograptus has been investigated. Brief review and revision o f the paleoautecology and affinity of graptolites has also been included.
