• Early nesting biology of the bee Caupolicana yarrowi (Cresson) (Colletidae, Diphaglossinae) and its cleptoparasite Triepeolus grandis (Friese) (Apidae, Nomadinae). (American Museum novitates, no. 3931) 

  Rozen, Jerome G., Jr. (Jerome George), 1928-; Danforth, Bryan N.; Smith, Corey Shepard.; Decker, Brenna L.; Dorian, Nicholas N.; Dority, Delina.; Kilpatrick, Shelby Kerrin.; Krichilsky, Erin.; Laws, Angela N.; Urban-Mead, Katherine R.; Cane, James H. (James Harley), 1955- (American Museum of Natural History., 2019-06-28)

  The first part of this publication, written by a group of participants in Bee Course 2018, results from the discovery of three nests of Caupolicana yarrowi (Cresson, 1875) at the base of the Chiricahua Mountains in ...
• Stratigraphy and paleobiology of the Upper Cretaceous-Lower Paleogene sediments from the Trans-Saharan Seaway in Mali. (Bulletin of the American Museum of Natural History, no. 436) 

  O'Leary, Maureen A.; Bouaré, Mohamed L.; Claeson, Kerin M.; Heilbronn, Kelly.; Hill, Robert V.; McCartney, Jacob A.; Sessa, Jocelyn A.; Sissoko, Famory.; Tapanila, Leif.; Wheeler, E. A.; Roberts, Eric M. (American Museum of Natural History., 2019-06-28)

  An epicontinental sea bisected West Africa periodically from the Late Cretaceous to the early Eocene, in dramatic contrast to the current Sahara Desert that dominates the same region today. Known as the Trans-Saharan Seaway, ...
• Myrmecicultoridae, a new family of myrmecophilic spiders from the Chihuahuan Desert (Araneae, Entelegynae). (American Museum novitates, no. 3930) 

  Ramírez, Martín J.; Grismado, Cristian J.; Ubick, Darrell.; Ovcharenko, V. I.; Cushing, Paula Elizabeth, 1964-; Platnick, Norman I.; Wheeler, Ward.; Prendini, Lorenzo.; Crowley, Louise M.; Horner, Norman V. (American Museum of Natural History., 2019-06-26)

  The new genus and species Myrmecicultor chihuahuensis Ramírez, Grismado, and Ubick is described and proposed as the type of the new family, Myrmecicultoridae Ramírez, Grismado, and Ubick. The species is ecribellate, with ...
• Systematics of the short-tailed whipscorpion genus Stenochrus Chamberlin, 1922 (Schizomida, Hubbardiidae), with descriptions of six new genera and five new species. (Bulletin of the American Museum of Natural History, no. 435) 

  Monjaraz-Ruedas, Rodrigo.; Prendini, Lorenzo.; Francke, Oscar F. (American Museum of Natural History., 2019-06-20)

  The short-tailed whipscorpion genus, Stenochrus Chamberlin, 1922 (Schizomida: Hubbardiidae Cook, 1899), occurring in North and Central America, is redefined and revised based on simultaneous phylogenetic analysis of 61 ...
• Description of a new species of ponyfish (Teleostei, Leiognathidae, Equulitini, Photolateralis) from the Gulf of Oman. (American Museum novitates, no. 3929) 

  Sparks, John S.; Chakrabarty, Prosanta. (American Museum of Natural History., 2019-06-19)

  A new species belonging to the leiognathid genus Photolateralis, collected from the coastal waters of Oman, is described herein. Photolateralis is unique among leiognathid genera in possessing a species-specific translucent ...
• A new mormoopid bat from the Oligocene (Whitneyan and early Arikareean) of Florida, and phylogenetic relationships of the major clades of Mormoopidae (Mammalia, Chiroptera). (Bulletin of the American Museum of Natural History, no. 434) 

  Morgan, Gary S.; Czaplewski, Nicholas J.; Simmons, Nancy B. (American Museum of Natural History., 2019-06-17)

  A new genus and species of fossil bat, Koopmanycteris palaeomormoops, representing an ancient member of the endemic Neotropical family Mormoopidae, is described from the Oligocene of Florida. This new species is known from ...
• Caudal cranium of Thylacosmilus atrox (Mammalia, Metatheria, Sparassodonta), a South American predaceous sabertooth. (Bulletin of the American Museum of Natural History, no. 433) 

  Forasiepi, Analía M.; MacPhee, R. D. E.; Hernández del Pino, Santiago. (American Museum of Natural History., 2019-06-14)

  The caudal cranium of the South American sabertooth Thylacosmilus atrox (Thylacosmilidae, Sparassodonta, Metatheria) is described in detail, with emphasis on the constitution of the walls of the middle ear, cranial ...
• Mammalian diversity and Matses ethnomammalogy in Amazonian Peru. Part 3, Marsupials (Didelphimorphia). (Bulletin of the American Museum of Natural History, no. 432) 

  Voss, Robert S.; Fleck, David W. (David William), 1969-; Jansa, Sharon A. (American Museum of Natural History., 2019-06-14)

  This report is the third in our monographic series on mammalian diversity and Matses ethnomammalogy in the Yavarí-Ucayali interfluvial region of northeastern Peru. Based on taxonomic analysis of specimens collected in the ...
• The fishes of the Amazon : distribution and biogeographical patterns, with a comprehensive list of species. (Bulletin of the American Museum of Natural History, no. 431) 

  Dagosta, Fernando C. P.; Pinna, Mário C. C. de. (American Museum of Natural History., 2019-06-13)

  We provide a general compilation of the diversity and geographical distribution of Amazonian fishes, updated to the end of 2018. Our database includes documented distributions of 4214 species (both Amazonian and from ...
• A review of the Eliurus tanala complex (Rodentia, Muroidea, Nesomyidae), with description of a new species from dry forests of western Madagascar. (Bulletin of the American Museum of Natural History, no. 430) 

  Jansa, Sharon A.; Carleton, Michael D.; Soarimalala, Voahangy.; Rakotomalala, Zafimahery.; Goodman, Steven M. (American Museum of Natural History., 2019-05-08)

  Based on 372 specimens examined, we integrated information from two mitochondrial and four nuclear gene sequences, morphological comparisons and morphometric analyses, as well as distributional patterns and ecological ...
• Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae). (American Museum novitates, no. 3928) 

  Hopkins, Melanie J. (American Museum of Natural History., 2019-05-07)

  The Balnibarbiinae is one of eight subfamilies of the Olenidae, a diverse family of late Cambrian to Ordovician trilobites. Balnibarbiine species occur in a relatively continuous section of deeper-water sediments exposed ...
• A new morphological dataset reveals a novel relationship for the adzebills of New Zealand (Aptornis) and provides a foundation for total evidence neoavian phylogenetics. (American Museum novitates, no. 3927) 

  Musser, Grace M.; Cracraft, Joel. (American Museum of Natural History., 2019-05-03)

  Relationships among Neoaves, a group comprising approximately 95% of all extant birds, are difficult to resolve because of multiple short internodes presumably created by a rapid evolutionary radiation around the K/Pg ...
• Karyotypes of six species of colubrid snakes from the Western Hemisphere, and the 140-million-year-old ancestral karyotype of Serpentes. (American Museum novitates, no. 3926) 

  Cole, Charles J.; Hardy, Laurence M. (American Museum of Natural History., 2019-04-29)

  Karyotypes are described for six species of snakes from the Western Hemisphere, and comparisons are made with all species of snakes from around the world that have been karyotyped with modern methods. Although there is ...
• Lower jaw of Spathites (Ammonoidea, Acanthoceratoidea) from the Upper Cretaceous (Turonian) of New Mexico. (American Museum novitates, no. 3925) 

  Landman, Neil H.; Sealey, Paul L.; Foley, Michael P.; Lucas, Spencer G. (American Museum of Natural History., 2019-04-24)

  A lower jaw was recently discovered in a limestone concretion in association with the Late Cretaceous (Turonian) ammonite Spathites puercoensis (Herrick and Johnson, 1900) from the Carlile Member of the Mancos Shale in ...
• Immature stages of selected meliponine bees (Apoidea, Apidae). (American Museum novitates, no. 3924) 

  Rozen, Jerome G., Jr. (Jerome George), 1928-; Quezada Euán, José Javier G.; Roubik, David W. (David Ward), 1951-; Smith, Corey Shepard. (American Museum of Natural History., 2019-04-08)

  This paper describes the eggs and last larval instars of certain species of bees belonging to the tribe Meliponini, one of the four related tribes that comprise the corbiculate bees in the subfamily Apinae. The four taxa ...
• Small mammals of the Mayo River Basin in northern Peru, with the description of a new species of Sturnira (Chiroptera, Phyllostomidae). (Bulletin of the American Museum of Natural History, no. 429) 

  Velazco, Paúl M.; Patterson, Bruce D. (American Museum of Natural History., 2019-04-05)

  We present the results of an inventory of small mammals in the Mayo River basin, one of the least-studied regions of the Central Andes in Peru. We conducted inventories at three locations in May 2007. We collected 47 species ...
• A neotype for Didelphis marsupialis Linnaeus, 1758. (American Museum novitates, no. 3923) 

  Feijó, Anderson.; Voss, Robert S. (American Museum of Natural History., 2019-03-26)

  Didelphis marsupialis, type species of the genus Didelphis, is a widely distributed and commonly studied American marsupial. Unfortunately, the previously noncontroversial application of the epithet marsupialis Linnaeus, ...
• Intraspecific variation through ontogeny in late Cretaceous ammonites. (American Museum novitates, no. 3922) 

  Klein, Carina.; Landman, Neil H. (American Museum of Natural History., 2019-03-04)

  This project assesses intraspecific variation through the ontogeny of the ammonite Scaphites whitfieldi Cobban, 1951, from the Upper Cretaceous of the U.S. Western Interior. Our sample consists of 103 dorsoventral cross ...
• Late Quaternary fossil mammals from the Cayman Islands, West Indies. (Bulletin of the American Museum of Natural History, no. 428) 

  Morgan, Gary S.; MacPhee, R. D. E.; Woods, Roseina.; Turvey, Sam. (American Museum of Natural History., 2019-03-04)

  Abundant fossils of nesophontid lipotyphlan insectivores and capromyid rodents have been collected from late Quaternary deposits on the Cayman Islands, an island group separated by a major marine barrier from other Caribbean ...
• The phylogenetic relationships of Cretaceous biting midges, with a key to all known genera (Diptera, Ceratopogonidae). (American Museum novitates, no. 3921) 

  Borkent, Art. (American Museum of Natural History., 2019-02-25)

  The phylogenetic positions of Cretaceous species of Ceratopogonidae previously placed in the genera Archiculicoides Szadziewski, Protoculicoides Boesel, and Atriculicoides Remm are reappraised in light of synapomorphies. ...

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