Twins! Microsatellite analysis of two embryos within one egg case in oviparous elasmobranchs Hook, Samantha A. ; Musa, Syafiq M. ; Ripley, Daniel M. ; Hibbitt, Jean-Denis ; Grunow, Bianka ; Moritz, Timo ; Shiels, Holly A. Abstract Publication: PLoS ONE Pub Date: December 2019 DOI: 10.1371/journal.pone.0224397 Bibcode: 2019PLoSO..1424397H