Monge-Nájera, J. and Hou, X. 2000. Disparity, decimation and the Cambrian "explosion": comparison of eady Cambrian and Present faunal communities with emphasis on velvet worms (Onychophora). Revista de Biología Tropical. 48, 2-3 (Jul. 2000), 333–351. DOI:https://doi.org/10.15517/rbt.v48i2-3.18718.