The Graptolites (grapto = write, lithos = stone) are very small (<1 cm) extinct planktonic and colonial forms (inference based on shape of colonies, theca, and their recovery from deep “bottom” deposits).
CITATION STYLE
Jain, S. (2017). Graptolites. In Springer Geology (pp. 211–228). Springer. https://doi.org/10.1007/978-81-322-3658-0_7
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