12" Lebanese Fossil Fish Plates (Positive & Negative)Goedelli: Unlike many other fish specimens, this genera is only known from its fossil state. They first appeared in the Triassic time period then died out in the Upper Eocene period. The specimen's population peaked in the Jurassic period. Although the species habitat was mainly the sea, some lived, (if not in freshwater) at least in brackish water. "Pycnodontiformes" are an extinct order of bony fish. This species in particular were "holosteans"