Here is a good specimen of a Harpoceratoides alternatus from the early Jurassic nodular beds of Altdorf near Nurnberg. The Holotype of this species is public displayed in the museum of Whitby/Yorkshire under the N. 338.
Location:
Forchheim, Schlaifhausen, Germany
Size of fossil:
about 50 mm
Age:
Lower Jurasic, Lias e, Toarcian, Harpoceras exaratum zone (about. 189 Mill. years)