2023
DOI: 10.1002/spp2.1493
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The oldest evidence of brooding in a Devonian blastoid reveals the evolution of new reproductive strategies in early echinoderms

Abstract: Brooding of young is a reproductive strategy observed in many extant echinoderms, but the evolutionary history of this behaviour is largely unknown due to the scarcity of examples preserved in the fossil record. Here, synchrotron x‐ray tomography is used to describe an exceptionally preserved specimen of the Devonian blastoid echinoderm Hyperoblastus reimanni. The coelomic cavity appears completely preserved in a coiled arrangement partially enclosing organs associated with the digestive, haemal and axial syst… Show more

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