Asselian and Sakmarian (Lower Permian) Radiolarian Ecozones of the South Urals (Russia) M. S. Afanasieva OriginalPaper 20 December 2021 Pages: 825 - 862
Microfauna and Stratigraphy of the Ogarkovo Jurassic–Cretaceous Reference Section on the Unzha River (Russia, Kostroma Region) T. N. PalechekV. V. MittaL. V. Zaytseva OriginalPaper 20 December 2021 Pages: 863 - 875
Lower Carboniferous Gastropods of Dombar Hills (Viséan–Serpukhovian Boundary Beds, Western Kazakhstan) A. V. Mazaev OriginalPaper 20 December 2021 Pages: 876 - 905
Paekthoblatta, a New Predatory Cockroach Genus (Insecta: Blattaria: Raphidiomimidae) from the Lower Cretaceous of Paektho-Dong, Sinuiju, Democratic People’s Republic of Korea K. S. SoC. G. WonI. Y. Ju OriginalPaper 20 December 2021 Pages: 906 - 909
A New Species of Spinaeblattina Hinkelman, 2019 (Insecta, Blattaria, Mesoblattinidae) from the Lower Cretaceous of Paektho-Dong, Sinuiju, Democratic People’s Republic of Korea K. S. SoC. G. WonI. Y. Ju OriginalPaper 20 December 2021 Pages: 910 - 912
A New Tortoise from the Pleistocene of Argentina with Comments on the Extinction of Late Pleistocene Tortoises and Plant Communities F. L. Agnolin OriginalPaper 20 December 2021 Pages: 913 - 922
The Diet of Pliohippus potosinus [Equidae, Mammalia] from the Late Miocene Paso del Águila Local Fauna, San Luis Potosí, México V. A. Pérez-CrespoI. Ferrusquía-VillafrancaE. Martínez-Hernández OriginalPaper 20 December 2021 Pages: 923 - 929