Dactylioceras crassoides Simpson, 1855 & Harpoceras faciferum (Sowerby)
Small piece of dark grey limestone. With two well preserved Dactylioceras and the zonal index species, Harpoceras falciferum. From an old collection.
Jurassic, Toarcian, Falciferum Zone, Portree Shales.
Holm, Skye, Scotland.
Largest Dactylioceras : 3 cm diam.