• A new dromaeosaurid (Dinosauria: Coelurosauria) from Khulsan, Central Mongolia (American Museum novitates, no. 3982) 

  Napoli, James G.; Ruebenstahl, Alexander; Bhullar, Bhart-Anjan S.; Turner, Alan H. (Alan Hamilton); Norell, Mark (American Museum of Natural History., 2021-11-08)

  Dromaeosaurid theropods represent a rare but important clade of nonavialan dinosaurs. Their close evolutionary relationship to modern birds has placed them at the center of paleontological research for the last several ...
• A new Troglomorphic, leaf-litter scorpion from Ecuador (Troglotayosicidae: Troglotayosicus) (American Museum novitates, no. 3981) 

  Botero-Trujillo, Ricardo; Ochoa, J. A. (José A.); Prendini, Lorenzo (American Museum of Natural History., 2021-11-03)

  For several decades, Troglotayosicus Lourenço, 1981, remained an enigmatic, monotypic scorpion genus believed to be troglobitic. The discovery and description in recent years of several endogean species of the genus, ...
• Two new Phenacogrammus (Characoidei; Alestidae) from the Ndzaa River (Mfimi-Lukenie basin) of central Africa, Democratic Republic of Congo (American Museum novitates, no. 3980) 

  Stiassny, Melanie L. J.; Alter, S. Elizabeth; Monsembula Iyaba, Raoul J. C.; Liyandja, Tobit L. D. (American Museum of Natural History., 2021-11-03)

  Two new Phenacogrammus are described from the Ndzaa River, a small left-bank tributary of the Mfimi-Lukenie River in the central Congo basin. They share with P. deheyni, a congener endemic to the Cuvette Centrale to the ...
• A new species of Histiotus Gervais, 1856 (Chiroptera, Vespertilionidae), from the Pacific Coast of Northern Peru (American Museum novitates, no. 3979) 

  Velazco, Paúl M.; Almeida, Francisca Cunha; Cláudio, Vinícius C.; Giménez, Analía L.; Giannini, Norberto P. (American Museum of Natural History., 2021-10-13)

  The Pacific coastal desert of Peru harbors a unique bat fauna, including narrowly endemic taxa adapted to arid environments. This region was also the setting where several pre-Incan civilizations flourished. The Moche ...
• Systematics of the relictual Asian scorpion family Pseudochactidae Gromov, 1998, with a review of cavernicolous, troglobitic, and troglomorphic scorpions (Bulletin of the American Museum of Natural History, no. 453) 

  Prendini, Lorenzo; Ehrenthal, Valentin L.; Loria, Stephanie F. (American Museum of Natural History., 2021-09-30)

  The first integrative systematic revision of the relictual Asian scorpion family Pseudochactidae Gromov, 1998, making use of an unprecedented collection of material acquired during several expeditions to most of the type ...

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