AMNH Library Digital Repository

The AMNH Library Digital Repository is an archive maintained by the Research Library for AMNH Scientific Publications, AMNH scholarly output and other original and published materials digitized by the Library. All information in the repository is freely accessible to scholars around the world to support their research.

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  • Anthropology  
    Contains scientific data and/or field notes and other digitized material from the Division of Anthropology.
  • Astrophysics  
    Contains scientific data and other digitized material from the Department of Astrophysics.
  • Center for Biodiversity and Conservation  
    Contains scientific data and/or field notes and other digitized material from the Center of Biodiversity and Conservation.
  • Earth And Planetary Sciences  
    Contains scientific data and/or field notes and other digitized material from the Department of Earth and Planetary Sciences.
  • Herpetology  
    Contains scientific data and/or field notes and other digitized material from the Department of Herpetology.
  • Mammalogy  
    Contains scientific data and/or field notes and other digitized material from the Department of Mammalogy.
  • Ornithology  
    Contains scientific data and/or field notes and other digitized material from the Department of Ornithology.
  • Paleontology  
    Contains scientific data and/or field notes and other digitized material from the Division of Paleontology
  • Research Library  
    Contains digitized Museum publications, Annual Reports, and archives from the Research Library.
  • Richard Gilder Graduate School  
    Contains dissertations from the Richard Gilder Graduate School.
  • Scientific Publications  
    Contains: American Museum Novitates, Anthropological Papers of the American Museum of Natural History, Bulletin of the American Museum of Natural History, and Memoirs of the American Museum of Natural History, as well as, related Supplemental Material.

Recent Submissions

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    Item type: Item , Access status: Open Access ,
    A revision of Caripeta Walker with phylogenetic placement of Snowia Neumögen and description of two new genera: Acripeta and Campana (Geometridae, Ennominae, Ennomini) (American Museum novitates no. 4044)
    (American Museum of Natural History., 2025-11-06) Matson, Tanner Alex.; Wagner, David L., 1956-
    The North American geometrid moth genus Caripeta Walker (Ennominae, Ennomini) is revised and its phylogenetic placement discussed. Previously comprising 14 species, the genus is now revised to include nine named, conifer-feeding species forming a well-supported clade sister to Snowia Neumögen. Caripeta latiorata Walker, n. syn., is synonymized with C. aretaria (Walker). Two new genera, Campana, n. gen., and Acripeta, n. gen., are described to reclassify species formerly regarded as Caripeta. Consequently, “Caripeta” macularia (Barnes and McDunnough), “Caripeta” ocellaria (Grossbeck), and “Synnomos” narangia Schaus are transferred to Campana; and “Caripeta” triangulata (Barnes and McDunnough) is transferred to Acripeta. “Neoselenia” hilumaria (Hulst), previously in Caripeta, is transferred to Hygrochroma Herrich-Schäffer, “Caripeta” canidiaria (Strecker) is transferred to Neoselenia Pitkin, and “Caripeta” rafaeli Beutelspacher is excluded from Caripeta and transferred to the Nacophorini as incertae sedis, pending further study. Adults and larvae of Caripeta sensu stricto are diagnosed and illustrated, with descriptions of male and female genitalia, along with brief summaries of known life histories and distributions. Larvae of Caripeta aequaliaria and C. suffusata are figured for the first time. Snowia, a mistletoe (Santalaceae) feeder, is redescribed, and valid members of Acripeta, Campana, and Snowia are illustrated and briefly discussed. A multilocus phylogeny is presented for Caripeta and related genera, supporting proposed taxonomic changes.
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    Item type: Item , Access status: Open Access ,
    Supplemental material for 'A new specimen of the tritylodontid Bienotheroides zigongensis (Cynodontia, Mammaliamorpha) from the Wucaiwan area of Xinjiang, China, and phylogeny of Tritylodontidae (Bulletin of the American Museum of Natural History, no. 477)'
    (American Museum of Natural History., 2025-10-09) Ren, Jicheng.; Liu, Lu (Researcher, Natural History Museum of China, Beijing); Han, Fenglu (Paleontologist); Xu, Xing, 1969-; Clark, James M. (Paleontologist); Liu, Jun (Paleontologist); Meng, Jin (Paleontologist); Mao, Fangyuan.
    Supplemental material for 'A new specimen of the tritylodontid Bienotheroides zigongensis (Cynodontia, Mammaliamorpha) from the Wucaiwan area of Xinjiang, China, and phylogeny of Tritylodontidae (Bulletin of the American Museum of Natural History, no. 477)' - https://hdl.handle.net/2246/7524
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    Item type: Item , Access status: Open Access ,
    A new specimen of the tritylodontid Bienotheroides zigongensis (Cynodontia, Mammaliamorpha) from the Wucaiwan area of Xinjiang, China, and phylogeny of Tritylodontidae (Bulletin of the American Museum of Natural History, no. 477)
    (American Museum of Natural History., 2025-10-09) Ren, Jicheng.; Liu, Lu (Researcher, Natural History Museum of China, Beijing); Han, Fenglu (Paleontologist); Xu, Xing, 1969-; Clark, James M. (Paleontologist); Liu, Jun (Paleontologist); Meng, Jin (Paleontologist); Mao, Fangyuan.
    Tritylodontidae is a Mesozoic group of small to medium-sized mammaliamorph cynodonts with cosmopolitan geographic distribution and characterized by possessing three mesiodistal rows of cusps in each of their upper postcanine teeth and two rows in the lower postcanines. Abundant tritylodontid materials have been discovered in Sichuan, Xinjiang, Yunnan, and other localities in China since 1938, but detailed description of their morphologies has been wanting. This paper describes a well-preserved tritylodontid skull with both mandibles, complete dentitions, and post-dentary bones. The specimen was collected from the Upper Jurassic Shishugou Formation in the Wucaiwan area of Junggar Basin, Xinjiang, China. It is assigned to Bienotheroides zigongensis because it possesses a typical characteristic combination of B. zigongensis, such as an extremely deep zygomatic arch, a greatly reduced maxilla, upper postcanine cusp formula of 2-3-3 and a quadrate with a mediodorsally directed stapedial process. Using micro-CT scan data, we are able to create three-dimensional digital reconstructions and provide a complete description of the specimen. We also reconstruct the inner ear and the maxillary canal system, which provide considerable craniodental information previously unknown in Bienotheroides. These new morphological data are informative for better diagnosing the genus and reconstructing the phylogeny of tritylodontids. A revised character data matrix with 15 tritylodontid genera and 70 characters is generated based on reevaluated morphological characters, of which 23 characters are new. Our phylogenetic analysis of Tritylodontidae resulted in a better-resolved topology of the phylogenetic relationship of tritylodontids. Using this phylogenetic framework, we postulate an evolutionary pattern of tritylodontid cranial morphology unique among cynodonts, characterized by shortening of the snout and basicranial region and reduction of the maxilla.
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    Item type: Item , Access status: Open Access ,
    Supplemental materials for 'Systematics of the extinct suborder Cephalozygoptera (Odonata) : a wing-based analysis comparing its genera with those of extant Zygoptera (American Museum novitates, no. 4043)'
    (American Museum of Natural History., 2025-09-23) Ware, Jessica L.; Simonsen, Thomas J.; Rasmussen, Jan Audun.; Archibald, S. Bruce.
    Supplemental materials for 'Systematics of the extinct suborder Cephalozygoptera (Odonata) : a wing-based analysis comparing its genera with those of extant Zygoptera (American Museum novitates, no. 4043)' - https://hdl.handle.net/2246/7522
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    Item type: Item , Access status: Open Access ,
    Systematics of the extinct suborder Cephalozygoptera (Odonata) : a wing-based analysis comparing its genera with those of extant Zygoptera (American Museum novitates, no. 4043)
    (American Museum of Natural History., 2025-09-23) Ware, Jessica L.; Simonsen, Thomas J.; Rasmussen, Jan Audun.; Archibald, S. Bruce.
    We test the relationships of 31 genera of the extinct suborder Cephalozygoptera (Odonata) against those of 37 extant Zygoptera and Epiophlebia Calvert (Anisozygoptera). As the fossil record of Odonata is dominated by wings and wing fragments, we scored 21 wing characters and one head character. Maximum likelihood and maximum parsimony trees found Cephalozygoptera to be monophyletic with strong support and Zygoptera to be paraphyletic with respect to Epiophlebia, although the latter relationship is weakly supported and we reject it as an artifact. We treat Eodysagrioninae Rust, Petrulevičus, and Nel and Eodichromatinae Cockerell as families, Zacallatidae Cockerell as a subfamily of Eodichromatidae, and transfer these to the Cephalozygoptera. We treat Eodichromatidae, stat. rev., and Eodysagrionidae, stat. rev., as the superfamily Eodichromatoidea, supfam. nov., and the Dysagrionidae Cockerell, Sieblosiidae Handlirsch, and Whetwhetaksidae Archibald and Cannings as the informal sieblosioid family group.