TY - RPRT TI - An ancient dental signalling centre supports homology of an enamel knot in sharks AU - Thiery, A. P. AU - Standing, A. S. I. AU - Cooper, R. L. AU - Fraser, G. J. PY - 2021 DO - 10.1101/2021.08.13.456270 UR - https://www.biorxiv.org/content/10.1101/2021.08.13.456270v1 ID - 10.1101/2021.08.13.456270 ER -