William K. Gregory

Princeton University

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Michel Tsamados

University College London

Mitchell Bushuk

NOAA Geophysical Fluid Dynamics Laboratory

Yongfei Zhang

Taiyuan University of Science and Technology

Isobel R. Lawrence

European Space Research Institute

Julienne Strœve

University of Colorado Boulder

Alistair Adcroft

NOAA Geophysical Fluid Dynamics Laboratory

Laure Zanna

Courant Institute of Mathematical Sciences

Henry Cushier Raven

American Museum of Natural History

Central Asiatic Expeditions

Walter Granger

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Columbia University

New York University

Princeton University

University College London

American Museum of Natural History

NOAA Geophysical Fluid Dynamics Laboratory

University of Washington

NSF National Center for Atmospheric Research

National Oceanic and Atmospheric Administration

Courant Institute of Mathematical Sciences

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Musée Ostéologique. Étude de la Faune Quaternaire. Ostéométrie des Mammifères . Par Edmond Hue Médecin Vétérinaire, Membre de la Société Préhistorique de France. Album de 186 planches contenant vi +50, pl. 93. Deuxième Fascicule, pl. 2,187 figdres. Premier Fascicule, pp. 94-186. Royal 8vo. Schleicher Frères, Éditeurs. Paris. 1907.

Science (1908)

William K. Gregory

10.1126/science.28.712.234-b

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Supra-Specific Variation in Nature and in Classification. A Few Examples from Mammalian Paleontology

The American Naturalist (1937)

William K. Gregory

Naturalism

Variation (astronomy)

Biological anthropology

Covert

Morphology

Vertebrate paleontology

10.1086/280756

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Citations (2)

The Galton Society for the Study of the Origin and Evolution of Man

Science (1919)

William K. Gregory

w l ~i c h the actual rotation took place.This suggests a precaution---during the spin, hold t h e head down .so that it i s rotated about its long axis; on coming o u t of .thespin, raise the head.Any distulibance experienced then will be i n directional (i.

Galton's problem

10.1126/science.49.1263.267

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Citations (4)

Revised reconstruction of the skull of Plesianthropus transvaalensis Broom

American Journal of Physical Anthropology (1945)

William K. Gregory Milo Hellman

Broom

10.1002/ajpa.1330030307

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Citations (1)

Relationship of the Tupaiidae and of Eocene Lemurs, especially Notharctus

Geological Society of America Bulletin (1913)

William K. Gregory

Research Article| January 01, 1913 Relationship of the Tupaiidæ and of Eocene Lemurs, especially Notharctus WILLIAM K. GREGORY WILLIAM K. GREGORY Search for other works by this author on: GSW Google Scholar GSA Bulletin (1913) 24 (1): 247–252. https://doi.org/10.1130/GSAB-24-247 Article history received: 11 Jan 1913 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation WILLIAM K. GREGORY; Relationship of the Tupaiidæ and of Eocene Lemurs, especially Notharctus. GSA Bulletin 1913;; 24 (1): 247–252. doi: https://doi.org/10.1130/GSAB-24-247 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract IntroductionWhen my friend Mr. C. W. Beebe was in Borneo he made persistent efforts to secure for me specimens of the rare pen-tailed tree-shrew (Ptilocercus lowii). Failing in this, he obtained the loan of a skin and skeleton of this animal from the Rajah of Sarawak, and these he has very kindly intrusted to me for study and description.Ptilocercus and its ally, Tupaia, together constituting the family Tupaiidse of the suborder Menotyphla, are of peculiar interest, because they appear to bridge over to some extent the gap that separates Insectivores from Primates. They are arboreal in habit, and Tupaia is said to be lively, active, and squirrel-like, both in appearance and in habit.Certain anatomical resemblances shown by Tupaia to the Lemurs have been noted from time to time by various authors, but until recently the Tupaiids have been studied far less thoroughly than other families of Insectivores. . . . This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

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10.1130/gsab-24-247

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Citations (18)

Regional September Sea Ice Forecasting with Complex Networks and Gaussian Processes

Weather and Forecasting (2020)

William K. Gregory Michel Tsamados Julienne Strœve Peter Sollich

Abstract Reliable predictions of the Arctic sea ice cover are becoming of paramount importance for Arctic communities and industry stakeholders. In this study pan-Arctic and regional September mean sea ice extents are forecast with lead times of up to 3 months using a complex network statistical approach. This method exploits relationships within climate time series data by constructing regions of spatiotemporal homogeneity (i.e., nodes), and subsequently deriving teleconnection links between them. Here the nodes and links of the networks are generated from monthly mean sea ice concentration fields in June, July, and August; hence, individual networks are constructed for each respective month. Network information is then utilized within a linear Gaussian process regression forecast model, a Bayesian inference technique, in order to generate predictions of sea ice extent. Pan-Arctic forecasts capture a significant amount of the variability in the satellite observations of September sea ice extent, with detrended predictive skills of 0.53, 0.62, and 0.81 at 3-, 2-, and 1-month lead times, respectively. Regional forecasts are also performed for nine Arctic regions. On average, the highest predictive skill is achieved in the Canadian Archipelago, Beaufort, Chukchi, East Siberian, Laptev, and Kara Seas, although the ability to accurately predict many of these regions appears to be changing over time.

Teleconnection

Lead (geology)

Hindcast

10.1175/waf-d-19-0107.1

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Citations (30)

On Protoceratops, a primitive ceratopsian dinosaur from the Lower Cretaceous of Mongolia

American Museum of Natural History eBooks (1925)

William K. Gregory Charles Craig Mook

Inner mongolia

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