Where does “Echinodermata” come from?

Echinodermata (Spanish) comes from Ancient Greek ἐχῖνος, from Translingual Cactus, from Latin cactus, from Ancient Greek κάκτος — the cardoon, "Cynara cardunculus"; the artichoke...

Ancestry of “Echinodermata”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἐχῖνος	hedgehog; sea urchin; shell of a sea urchin
2	Translingual	Cactus	obsolete genus of succulents
3	Latin	cactus	the cardoon, "Cynara cardunculus"
4	Ancient Greek	κάκτος	the cardoon, "Cynara cardunculus"; the artichoke...

Every word from Ancient Greek κάκτος →Every word from Latin cactus →Every word from Translingual Cactus →