Embryonic Development of Chondrichthayan Fishes -- A Review / Jennifer T. Wyffels -- Staging of the Early Development of Polypterus (Cladistia: Actinopterygii) / Salif Diedhiou and Peter Bartsch -- Early Development of Acipenseriformes (Chondrostei: Actinopterygii) / Teresa Ostaszewska and Konrad Dabrowski -- Early Ontogeny of Semionotiformes and Amiiformes (Neopterygii: Actinopterygii) / Marta Jaroszewska and Konrad Dabrowski -- Early Development in Sarcopterygian Fishes / Felisa Kershaw, Gregory H. Joss and Jean M.P. Joss