21
4
November
823
833
FORTEY, R. A., MORRIS, S. F. 1978. Discovery of nauplius-like trilobite larvae. Palaeontology, 21, 4, 823–833.
R. A. Fortey and S. F. Morris Phosphatized cybelinid trilobite larvae in an exceptional state of preservation have been obtained from early Ordovician limestones in northern Spitsbergen. A stage below the anaprotaspis is described, and termed the phaselus stage. There is a case for regarding the phaselus larva as homologous with the nauplius larva of extant Crustacea. The Palaeontological Association (Free Access)