WoRMS source details
Pfeffer, G. 1880. Die Clypeasteriden des Hamburger Museums. Verhandlungen des Naturwissenschaftlicher Verein Hamburg 5, 1881, p. 56-70
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Echinarachnius pacificus Pfeffer, 1881 accepted as Scaphechinus mirabilis A. Agassiz, 1864 (original description)
Echinodiscus biforis parviforis Pfeffer, 1881 accepted as Echinodiscus tenuissimus (L. Agassiz & Desor, 1847a) accepted as Sculpsitechinus tenuissimus (L. Agassiz & Desor, 1847a) (original description)
Peronella ludwigii Pfeffer, 1881 accepted as Peronella orbicularis (Leske, 1778) (original description)
Echinodiscus biforis parviforis Pfeffer, 1881 accepted as Echinodiscus tenuissimus (L. Agassiz & Desor, 1847a) accepted as Sculpsitechinus tenuissimus (L. Agassiz & Desor, 1847a) (original description)
Peronella ludwigii Pfeffer, 1881 accepted as Peronella orbicularis (Leske, 1778) (original description)
