ECB-IMG-189367
Echinobase Image ID: 189367
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Figure 1. Echinoderm phylogeny showing class relationships, the Asterozoa (Asteroidea, Ophiuroidea), Echinozoa (Echinoidea, Holothuroidea), and basal Crinozoa and indicative relationship with the Hemichordata and Cephalochordata. Illustrations show adults and larvae. The Holothuroidea, Asteroidea, and Hemichordata have the ancestral-type feeding dipleurula larvae while the Echinoidea and Ophiuroidea have independently evolved the feeding pluteus larval form. The Crinoidea lack a feeding larva. Images provided: crinoid adult, A. Hoggett; crinoid larva H. Nakano; hemichordate images, B. Swalla, cephalochordate, P. Martinez. Image published in: Byrne M et al. (2020) Image downloaded from an Open Access article in PubMed Central. © The Author(s) 2020 Larger Image Printer Friendly View |