ECHINODERMATA (SPINY-SKINNED INVERTEBRATES) ByShrim Gautam •Sunday, February 06, 2022 · Jacob Klein introduced the term echinoderm ( echinos = spine; derma = skin) meaning spiny-skinned invertebrates. · Frey and Leuckart kept these animals in a separate phylum, the Echinodermata. VVI Examples of …