Mayr G.

Towards completion of the early Eocene aviary: A new bird group from the Messel oil shale (Aves, Eopachypterygidae, fam. nov.)

. Zootaxa [Internet]. 2015 Sep. 8 [cited 2025 Apr. 5];4013(2):252–264. Available from: https://mapress.com/zt/article/view/zootaxa.4013.2.6