A number of new seed fossils from the lower Permian of Gansu, Northwest China: implication for research on arils

Arils within seed fossils are rare in the geological record, especially during the Palaeozoic. Thus, in order to augment seed fossils research from the Paleozoic, we describe three new specimens from the Permian of Jinchang City, Gansu Province, Northwest China. This material includes one new species, Samaropsis jinchangensis Y. F. Hua et al B.N. Sun sp. nov., and two known species, Trigonocarpus ovatum and Cardiocarpus cordai. We describe the...