Entity

Time filter

Source Type

Lake Norman of Catawba, Oklahoma, United States

Frederickson J.A.,University of Oklahoma | Lipka T.R.,Sam Noble Museum | Cifelli R.L.,University of Oklahoma
Journal of Vertebrate Paleontology | Year: 2016

http://zoobank.org/urn:lsid:zoobank.org:pub:CFECA48B-7833-472B-8FA8-D746B3A6D9CE SUPPLEMENTAL DATA—Supplemental materials are available for this article for free at www.tandfonline.com/UJVP Citation for this article: Frederickson, J. A., T. R. Lipka, and R. L. Cifelli. 2016. A new species of the lungfish Ceratodus (Dipnoi) from the Early Cretaceous of the eastern U.SA. Journal of Vertebrate Paleontology. DOI: 10.1080/02724634.2016.1136316. © 2016 by the Society of Vertebrate Paleontology Source


Romano M.,University of Rome La Sapienza | Cifelli R.L.,Sam Noble Museum | Vai G.B.,University of Bologna
Italian Journal of Geosciences | Year: 2016

Although the popular map by William Smith "A Delineation of the Strata of England and Wales with Part of Scotland" is properly celebrated as the first complete geological map of an entire country, the basic principles used by the famous English canal surveyor were epistemologically founded and utilized by the Italian Count Luigi Ferdinando Marsili about a century earlier. Marsili, "uomo d'arme e scienza" ("man of army and science"), represents a vitally important pioneer in the fields of geography, cartography, and oceanography, with fartherranging knowledge that included, for example, the field of archaeological survey. With his geologic map of the Cesenate sulphur mines Marsili was the first geologist to make the quantum leap from simple mineralogical maps - which report the location and access of mines on a topographic background - to a proto-geological map, wherein the areas represented by corresponding lithostratigraphic units are delimited. If Smith's map is rightly regarded as an ambitious work for the areal extent covered, Marsili's "Treatise on the Structure of the Earthy Globe" (lamentably unfinished) was by far more ambitious. The 200 sheets that come down to us include about 50 pen drawings and more than 35 water-colored plates. These clearly show how the work of Marsili took radical departure from the classic systems or "Theories of the Earth" espoused by British contemporaries such as Burnet and Woodward: in the Italian scientist we find the first arguments on the mountain roots and the observations that, much later, led to the principle of isostasy. In the fields of stratigraphy, regional geology, oceanography, and geological mapping, Marsili anticipated scholarly thought by at least a century. © Società Geologica Italiana, Roma 2016. Source


Cifelli R.L.,Sam Noble Museum | Gordon C.L.,University of Oklahoma | Lipka T.R.,Sam Noble Museum
Canadian Journal of Earth Sciences | Year: 2013

Multituberculates, though among the most commonly encountered mammalian fossils of the Mesozoic, are poorly known from the North American Early Cretaceous, with only one taxon named to date. Herein we describe Argillomys marylandensis, gen. et sp. nov., from the Early Cretaceous of Maryland, based on an isolated M2. Argillomys represents the second mammal known from the Arundel Clay facies of the Patuxent Formation (Lower Cretaceous: Aptian). Though distinctive in its combination of characters (e.g., enamel ornamentation consisting of ribs and grooves only, cusp formula 2:4, presence of distinct cusp on anterobuccal ridge, enlargement of second cusp on buccal row, central position of ultimate cusp in lingual row, great relative length), the broader affinities of Argillomys cannot be established because of non-representation of the antemolar dentition. Based on lack of apomorphies commonly seen among Cimolodonta (e.g., three or more cusps present in buccal row, fusion of cusps in lingual row, cusps strongly pyramidal and separated by narrow grooves), we provisionally regard Argillomys as a multituberculate of "plagiaulacidan" grade. Intriguingly, it is comparable in certain respects to some unnamed Paulchoffatiidae, a family otherwise known from the Late Jurassic - Early Cretaceous of the Iberian Peninsula. Source

Discover hidden collaborations