Tematica Animali preistorici

Ptychopariidae Matthew, 1887 Ptychopariida Swinnerton, 1915

Ptychopariidae Matthew, 1887 Ptychopariida Swinnerton, 1915

big Lyriaspis sp.
Stato: British Antarctic Territory
Data: 02/04/1990
Emissione: Fossili
big Ptychoparia sp.
Stato: Korea (North)
Data: 05/07/1997
Emissione: Trilobiti