Keywords: Testudines Tab. VIII.jpg Animalia nova sive species novae testudinum et ranarum Monachii F S Hbschmanni 1824 http //biodiversitylibrary org/page/2948543 biodiversitylibrary org/page/2948543 Platemys platycephala known as twist-necked turtle b/c of its ability to twist its head into its shell when threatened http //biodiversitylibrary org/page/2948543 biodiversitylibrary org/page/2948543 https //www flickr com/photos/biodivlibrary/7096776429/ n78_w1150 2012-04-20 13 58 Johann Baptist von Spix PD-old Animalia nova sive species novae testudinum et ranarum |