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The Drosophila funebris species group in North America (Diptera: Drosophilidae) (American Museum novitates, no. 3988)
No full text25 pages : illustrations (chiefly color) ; 26 cm.Although the global human commensal Drosophila funebris (Fabricius) is well known
and is the type species of the genus Drosophila Fallén, the four native North American
species of the funebris group have been poorly defined morphologically. D. macrospina
limpiensis Patterson and Wheeler is newly recognized as a species distinct from D. macrospina, with diagnostic morphological characters provided. The subspecies D. macrospina
ohioensis Stalker is synonymized under D. macrospina. Species native to the Palearctic and
to the Nearctic are morphologically distinct, each probably a monophyletic group. Detailed
descriptions and redescriptions are provided for both sexes of D. macrospina Stalker and
Spencer, D. limpiensis Patterson and Wheeler, D. subfunebris Stalker and Spencer, and D.
trispina Wheeler, the latter two being very rare species from southern California. Neotypes
are designated for D. macrospina and D. subfunebris. A key to the five Nearctic species of
the funebris group is provided
A new genus with two new species of Colombian harvestmen (Opiliones: Stygnidae: Stygninae) (American Museum novitates, no. 3991)
No full text14 pages : color illustrations ; 26 cm.Fortia, gen. nov., a new genus of Stygnidae with two new Colombian species, is diagnosed and described. Two possibly sympatric species Fortia jedi, sp. nov., and Fortia sith, sp. nov. (both from the Sierra Nevada de Santa Marta, Magdalena, Colombia), are described and illustrated. Relationships of the new genus are discussed
Description of two new species of Apomecynini (Coleoptera, Cerambycidae, Lamiinae) (American Museum novitates, no. 3985)
No full text10 pages : color illustrations, map ; 26 cm.Two new species of cerambycid beetles are described and illustrated: Morrisia skillmani from Guatemala and Adetaptera jejetama from Mexico. Additionally, a map illustrating the geographic distribution of the species of Morrisia Santos-Silva et al., 2019, and a key to the species of the genus are provided
Systematic review and cranial osteology of Petersius with redescription of P. conserialis (Teleostei: Alestidae) from the Rufiji and Ruvu rivers of Tanzania (American Museum novitates, no. 3992)
Full text link16 pages : illustrations (some color), color map ; 26 cmWe review the systematics of the monotypic alestid genus Petersius and provide a taxonomic redescription of P. conserialis from eastern Tanzania. Morphological investigation includes direct observation and examination of radiographed and μCT-scanned data from type and non-type specimens. We delimit the taxon’s geographic distribution along the lowland regions of the Rufiji and Ruvu river basins in Tanzania and provide information on ecology, sexual dimorphism, and ontogenetic variation. Petersius is herein diagnosed by the possession of a unique cuspidation patterning of the inner-row premaxillary dentition and a distinctively shaped anterodorsal margin of the supraoccipital crest. It shares with some species of Phenacogrammusa sigmoid-shaped process on the dorsal margin of the second infraorbital, a feature lacking in other alestid taxa. Additional features of potential utility for ongoing investigation of relationships among alestid genera include the possession of contralateral premaxillae separated by the anteromedial process of the mesethmoid and without interdigitations connecting the medial surfaces of the premaxillae; four, occasionally five or six, small outer-row premaxillary teeth implanted alternately with those of the inner row; a dentary lacking a pair of conical inner-row teeth proximal to the symphysis; a dorsal posttemporal fossa that is smaller than the ventral fossa; a median third posttemporal fossa located entirely within the epioccipital; a truncate dorsomedial cranial fontanel; and a complete circumorbital series forming an uninterrupted ring around the orbit in adult specimens
Supplemental Material for 'Craniodental morphology and phylogeny of marsupials (Bulletin of the American Museum of Natural History, no. 457)'
No full textSupplemental Material for 'Craniodental morphology and phylogeny of marsupials (Bulletin of the American Museum of Natural History, no. 457) - https://digitallibrary.amnh.org/handle/2246/729
Obsidian projectile point conveyance patterns in the lower Humboldt Valley, Nevada (Anthropological papers of the American Museum of Natural History, number 105)
Full text link134 pages : illustrations (some color), color maps ; 26 cmDespite their ubiquity, surface occurrences of obsidian artifacts at archaeological sites throughout western North America have traditionally been viewed as unworthy of serious attention because of the difficulty in dating them. In the past 40 years, the time sensitivity of certain Great Basin projectile point types has been established, which brings the importance of surface collections more center stage. With the coming of age and refinement of geochemical methods, obsidian artifacts from these surface sites can now be analyzed using nondestructive instrumental methods and matched to their geological eruptive origin on the basis of congruence in trace and rare earth element chemistry. Many of these surface assemblages in the Great Basin contain considerable numbers of obsidian projectile points that, when matched to their chemical source of origin, open up entirely new ways to investigate change and continuity in past land use and social relations. The present study was conducted in the lower Humboldt Valley of western Nevada, where large numbers of obsidian projectile points have been collected by professional archaeologists over the past century and housed in academic institutions and museums. In this study, more than 900 obsidian projectile points and bifaces were analyzed from 24 sites and localities within the lower Humboldt Valley using energy-dispersive X-ray fluorescence (EDXRF) to bring data to bear on the question of whether changes in obsidian source use occurred there over the past 5000 years (as determined by time-sensitive projectile points). Significant changes were identified in the direction and distance-to-source of arrow points vs. dart points, and in the source and direction of Humboldt series points and of Humboldt Basal-notched bifaces, which implicate directional shifts through time in social relations among peoples using—and during some periods living at sites in—the lower Humboldt Valley. These results provide independent data to evaluate current views about land use, artifact conveyance, social relations, and technological change in the western Great Basin and beyond
Supplemental Material for 'Cavioids, chinchilloids, and erethizontoids (Hystricognathi, Rodentia, Mammalia) of the early Miocene Pampa Castillo fauna, Chile. (American Museum novitates, no. 3984)'
No full textSupplemental Material for 'Cavioids, chinchilloids, and erethizontoids (Hystricognathi, Rodentia, Mammalia) of the early Miocene Pampa Castillo fauna, Chile. (American Museum novitates, no. 3984)
Modularity in the trilobite head consistent with hypothesized segmental origin of the eyes
No full textLandmark data, R-script, and associated files for modularity analyses of Calyptaulax annulata and Cloacaspis senilis
Field Guide for the Geology of Central Park and New York City
Full text linkTeachers guide for geology of Central Park. Supplement to: Jaret, S. J., et. al. (2021). Geology of Central Park, Manhattan, New York City, USA: New geochemical insights. Geological Society of America bulletin. https://doi.org/10.1130/2020.0061(02
Craniodental morphology and phylogeny of marsupials (Bulletin of the American Museum of Natural History, no. 457)
Full text link350 pages : illustrations (some color) ; 26 cm.The current literature on marsupial phylogenetics includes numerous studies based on analyses of morphological data with limited sampling of Recent and fossil taxa, and many studies based on analyses of molecular data with dense sampling of Recent taxa, but few studies have combined both data types. Another dichotomy in the marsupial phylogenetic literature is between studies focused on New World taxa and those focused on Sahulian taxa. To date, there has been no attempt to assess the phylogenetic relationships of the global marsupial fauna based on combined analyses of morphology and molecular sequences for a dense sampling of Recent and fossil taxa. For this report, we compiled morphological and molecular data from an unprecedented number of Recent and fossil marsupials. Our morphological data consist of 180 craniodental characters that we scored for 97 terminals representing every currently recognized Recent genus, 42 additional ingroup (crown-clade marsupial) terminals represented by well-preserved fossils, and 5 outgroups (nonmarsupial metatherians).Our molecular data comprise 24.5 kb of DNA sequences from whole-mitochondrial genomes and six nuclear loci (APOB, BRCA1, GHR, RAG1, RBP3 and VWF) for 97 marsupial terminals (the same Recent taxa scored for craniodental morphology) and several placental and monotreme outgroups. The results of separate and combined analyses of these data using a wide range of phylogenetic methods support many currently accepted hypotheses of ingroup (marsupial) relationships, but they also underscore the difficulty of placing fossils with key missing data (e.g., †Evolestes), and the unique difficulty of placing others that exhibit mosaics of plesiomorphic and autapomorphic traits (e.g., †Yalkaparidon). Unique contributions of our study are (1) critical discussions and illustrations of marsupial craniodental morphology including features never previously coded for phylogenetic analysis; (2) critical assessments of relative support for many suprageneric clades; (3) estimates of divergence times derived from tip-and-node dating based on uniquely taxon-dense analyses; and (4) a revised, higher-order classification of marsupials accompanied by lists of supporting craniodental synapomorphies. Far from the last word on these topics, this report lays the foundation for future research that may be enabled by the discovery of new fossil taxa, better-preserved material of previously described taxa, novel morphological characters (e.g., from the postcranium), and improved methods of phylogenetic analysis