Where does “Palaeechinoidea” come from?

Palaeechinoidea (Translingual) comes from Translingual Echinoidea, from Translingual Echinus, from Latin echīnus, from Ancient Greek ἐχῖνος, from Translingual Cactus, from Latin cactus, from Ancient Greek κάκτος — the cardoon, "Cynara cardunculus"; the artichoke...

Palaeechinoidea (Translingual): subclass

Definitions

subclass

Ancestry of “Palaeechinoidea”, step by step

Step	Language	Word	Meaning
1	Translingual	Echinoidea	class
2	Translingual	Echinus	genus of sea urchins
3	Latin	echīnus	a sea urchin, especially the edible kind
4	Ancient Greek	ἐχῖνος	hedgehog; sea urchin; shell of a sea urchin
5	Translingual	Cactus	obsolete genus of succulents
6	Latin	cactus	the cardoon, "Cynara cardunculus"
7	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 →