Thank you everyone for your input. I guess I should have gone with the name it came with, then. (In its modern form.) I had a big clump of camptotricha for years (it rotted rather unexpectedly) but the resemblance is not so obvious with this juvenile. Daisy, your picture shows the ontogeny of the spines in a way that makes a connection for me. And that is a really useful site, Thijs.
Did I just use the word ontogeny in a sentence?