A velvet-worm relative with two antenna pairsSourced
A tiny animal from 520 million years ago had twice the expected antennae.
Antennacanthopodia fossils from Yunnan, China, resemble an ancient relative of today's velvet worms. The animal had nine pairs of stubby legs and two pairs of antennae. Researchers still debate what the shorter pair became in later relatives.
A tiny head holds a larger evolutionary question.
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Reviewed: 2026-10-01