Decay of Branchiostoma : implications for soft-tissue preservation in conodonts and other primitive chordates Briggs, Derek E. G. ; Kear, Amanda J. Abstract Publication: Lethaia Pub Date: December 1993 DOI: 10.1111/j.1502-3931.1993.tb01532.x Bibcode: 1993Letha..26..275B