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Articles 931 - 960 of 1258

Full-Text Articles in Geology

Ground Water Atlas Of Nebraska (June 1969), V. H. Dreeszen, J. A. Elder, E. C. Weakly, E. C. Reed, G. R. Svoboda Jan 1969

Ground Water Atlas Of Nebraska (June 1969), V. H. Dreeszen, J. A. Elder, E. C. Weakly, E. C. Reed, G. R. Svoboda

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Revisions Of Two Subgenera Of Andrena: Micrandrena Ashmead And Derandrena, New Subgenus (Hymenoptera: Apoidea), David O. Ribble Oct 1968

Revisions Of Two Subgenera Of Andrena: Micrandrena Ashmead And Derandrena, New Subgenus (Hymenoptera: Apoidea), David O. Ribble

Bulletin of the University of Nebraska State Museum (1924–2023)

This paper is a monographic revision of the bee subgenera Micrandrena Ashmead and Derandrena, new subgenus, of the genus Andrena in North America. Both subgenera occur in the New World and Micrandrena also occurs in the Old World. Twenty-eight species are treated, of which twelve are new: Andrena (Micrandrena) annectens, ishii, labergei, lamelliterga, lepidii, micheneri, Andrena (Derandrena) arctostaphylae, californiensis, hermosa, murietae, penutiani, viridissima. Thirteen names are placed in synonymy: Andrena semotula Cockerell with candidiformis Viereck and Cockerell; subtilicornis Viereck, nitidicornis Cockerell, chlorogaster nesiotes Timberlake, chlorogaster gavilanica Timberlake, radialis Timberlake, catalinica Cockerell with chlorogaster Viereck; vegana Viereck and Cockerell with illinoiensis …

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The Genera And Species Of The Feather Mite Subfamily Trouessartinae Except Trouessartia (Acarina: Proctophyllodidae), Kenneth R. Orwig Jun 1968

The Genera And Species Of The Feather Mite Subfamily Trouessartinae Except Trouessartia (Acarina: Proctophyllodidae), Kenneth R. Orwig

Bulletin of the University of Nebraska State Museum (1924–2023)

A systematic study of the acarine subfamily Trouessartinae (except Trouessartia) of the family Proctophyllodidae is presented. Diagnoses are given for the subfamily, five named genera and four new genera. The named genera and their type species are: Allanalges Trouessart, 1886, A. podagricus (Trouessart), 1886; Calcealges Gaud, 1952, C. cyathoplax Gaud, 1952; Hemicalcealges Gaud and Mouchet, 1957, H. margaropygus (Gaud and Mouchet), 1957; Pseudalges Radford, 1950, Proctophyllodes (Pterocolus) analgoides Trouessart, 1885; and Trouessartia Canestrini, 1899, Dermaleichus corvinus Koch, 1840. New genera and their type species are: Arthrogynalges, A. biovoidatus, new species; Bicentralges, B. orientalis, new species; Neocalcealges, N. inattditus, new species; …

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Two Feather Mite Genera (Analgoidea, Proctophyllodidae) From Birds Of The Families Oxyruncidae And Pipridae (Passeriformes, Tyranni), Warren T. Atyeo, J. Gaud Jun 1968

Two Feather Mite Genera (Analgoidea, Proctophyllodidae) From Birds Of The Families Oxyruncidae And Pipridae (Passeriformes, Tyranni), Warren T. Atyeo, J. Gaud

Bulletin of the University of Nebraska State Museum (1924–2023)

The genus Hemipterodectes Berla is redefined and the type species, H. squalocauda is figured. A new genus, Diproctophyllodes (type species, Proctophyllodes (Alloptes) dielytra Trouessert, 1885) is described; D. exquisita (Berla), 1959 is synomized with D. dielytra; and D. oxyrunci, new species, is described.

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Biometrical Study Of Morphology And Development Of The Pennsylvanian Trilobite Ameura Sangamonensis (Meek And Worthen), Roger K. Pabian, J. A. Fagerstrom Jun 1968

Biometrical Study Of Morphology And Development Of The Pennsylvanian Trilobite Ameura Sangamonensis (Meek And Worthen), Roger K. Pabian, J. A. Fagerstrom

Bulletin of the University of Nebraska State Museum (1924–2023)

Biometrical study of morphology and development in a sample of 100 cranidia, 94 pygidia, 26 free cheeks, and 9 complete specimens of the trilobite Ameura sangamonensis (Meek and Worthen) from the Bonner Springs Shale (Pennsylvanian; Missouri Series) in eastern Nebraska indicates that the dominant growth pattern was isometric. Evidence supporting this conclusion consists of rectilinear size relations among eight pairs of cranidial dimensions, three pairs of pygidial dimensions, and three pairs of dimensions of the free cheeks. Qualitative changes in pygidial morphology during development include a progressive decrease in prominence of the border, increasing width of the posterior border relative …

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New Genera Related To The Genus Brephosceles Hull, 1934 (Acarina: Proctophyllodidae), Paul C. Peterson, Warren T. Atyeo Jun 1968

New Genera Related To The Genus Brephosceles Hull, 1934 (Acarina: Proctophyllodidae), Paul C. Peterson, Warren T. Atyeo

Bulletin of the University of Nebraska State Museum (1924–2023)

Five new genera are described; these and the included species are (type species listed first): Dichobrephosceles with Dermaleichus actitidis Canestrini, 1878 (=Brephosceles dolichocaulus Gaud and Mouchet, 1957, new synonymy), D. eroliae, new species (ex: Erolia alpina, England); Homeobrephosceles with Proctophyllodes (A lloptes) discosurus Trouessart, 1886, Brephosceles orthothrix Gaud and Mouchet, 1957; Onychalloptes with Proctophyllodes (Alloptes) microphaeton Trouessart, 1885, Alloptes minutus Trouessart, 1899; Aramolichus with Aramolichus foliatus, new species (ex: Aramus guarauna, Bolivia); Psilobrephosceles with Dermalichus ortygometrae Canestrini, 1878. Species included in the genus Brephosceles (s.s.) are listed; species transferred to Brephosceles are: Proctophyllodes (Pterocolus) fiagellifer discursus Trouessart, 1885; Pterocolus lambda …

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Water Levels In Observation Wells In Nebraska, 1967, C.F. Keech Jun 1968

Water Levels In Observation Wells In Nebraska, 1967, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Groundwater Data Polk County, Nebraska, F.A. Smith, E.C. Weakly May 1968

Groundwater Data Polk County, Nebraska, F.A. Smith, E.C. Weakly

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Nebraska Groundwater Level (Decline & Rise), 1968 Jan 1968

Nebraska Groundwater Level (Decline & Rise), 1968

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Description Of Nebraska's Common Rocks, Raymond Burchett Jan 1968

Description Of Nebraska's Common Rocks, Raymond Burchett

Conservation and Survey Division: Faculty and Staff Publications

This one page information sheet lists names of common rocks found in Nebraska. It also includes a brief description and locations where these common rocks may be found.

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Directory Of Nebraska Quarries, Pits And Mines (1968), R. R. Burchett Jan 1968

Directory Of Nebraska Quarries, Pits And Mines (1968), R. R. Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Acres Irrigated In Nebraska- Past And Present Jan 1968

Acres Irrigated In Nebraska- Past And Present

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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The Nitrate Hazard In Well Water: With Special Reference To Holt County, Nebraska., Richard A. Engberg Oct 1967

The Nitrate Hazard In Well Water: With Special Reference To Holt County, Nebraska., Richard A. Engberg

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Stratigraphic Cross Section Of Paleozoic Rocks Of Nebraska, Russell Smith, Raymond Burchett Jun 1967

Stratigraphic Cross Section Of Paleozoic Rocks Of Nebraska, Russell Smith, Raymond Burchett

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Water Levels In Observation Wells In Nebraska, 1966, C.F. Keech May 1967

Water Levels In Observation Wells In Nebraska, 1966, C.F. Keech

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Stratigraphic Chart Of The Waubansee Group In Nebraska, R. R. Burchett, E. C. Reed Mar 1967

Stratigraphic Chart Of The Waubansee Group In Nebraska, R. R. Burchett, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Precambrian Well Data In Nebraska, Including Rock Type And Surface Configuration, Marvin P. Carlson Feb 1967

Precambrian Well Data In Nebraska, Including Rock Type And Surface Configuration, Marvin P. Carlson

Conservation and Survey Division: Faculty and Staff Publications

This bulletin presents, in tabular form, information relating to the Precambrian surface and includes a configuration map of this surface in Nebraska. The data from all of the 1460 deep tests reaching the Precambrian as of January 1, 1966 are listed. It is anticipated that further studies utilizing this data will be made due to the important influence of the Precambrian surface on later sedimentation and structure and the possibility of minerals of economic importance being present in Precambrian rocks. Specific information for each well and samples, except as noted in the tabulation, are on file and available for study …

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A Revision Of The Bees Of The Genus Andrena Of The Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae), Wallace E. Laberge Jan 1967

A Revision Of The Bees Of The Genus Andrena Of The Western Hemisphere. Part I. Callandrena. (Hymenoptera: Andrenidae), Wallace E. Laberge

Bulletin of the University of Nebraska State Museum (1924–2023)

This paper is the first part of a monograph of the bee genus Andrena in the western hemisphere and treats the subgenus Callandrena. Available data regarding phylogeny, distribution, biology, and flower preferences are presented together with keys to separate the species, diagnoses and descriptions of the species and discussions of geographic variation when applicable. Seventy-nine species and one subspecies are recognized. Sixteen names are relegated to synonymy, one to homonymy and eight are removed from the subgenus Callandrena. The thirty-nine species new to science are: aerifera, aeripes, afimbriata, ardis, auripes, balsamorhizae, beameri, bilimeki, bullata, calvata, dreisbachorum, fulminea, fulminoides, …

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A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner Jan 1967

A New Species Of Rhinoceros, Aphelops Kimballensis, From The Latest Pliocene Of Nebraska, Lloyd G. Tanner

Bulletin of the University of Nebraska State Museum (1924–2023)

An uncrushed skull and associated skeletal elements of a very large rhinoceros are the basis for the description of a new species of Aphelops from Frontier County, Nebraska. The major differences are: the skull is much larger in most dimensions than other Aphelops; it has an extremely elevated occipital region in comparison to Aphelops mutilus; the narial notch is retracted to a point perpendicular to the center of molar one; and the teeth are more hypsodont than any other species of this genus. The sediments which yielded the skull and skeletal parts are considered to be Kimballian in …

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The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble Jan 1967

The Monotypic North American Subgenus Larandrena Of Andrena (Hymenoptera: Apoidea), D. W. Ribble

Bulletin of the University of Nebraska State Museum (1924–2023)

Larandrena contains a single species, A. miserabilis Cresson. This small, common Andrena is found throughout most of the United States and southern Canada in the spring. The subgeneric position, nomenclature, redescription. variation, notes on the biology, parasites, range, seasonal activity and plant host records are included. A. rniserabilis is thought to be an important pollinator of fruit trees.

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Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent Jan 1967

Citellus Kimballensis, A New Late Pliocene Ground Squirrel, Douglas C. Kent

Bulletin of the University of Nebraska State Museum (1924–2023)

A new fossil sciurid, Citellus kimballensis, is described. This new species was found in the Kimball Formation, uppermost Ogallala (very late Pliocene) at the University of Nebraska State Museum Collecting Locality Cn-1O1, northeast of Sidney, Cheyenne County, Nebraska. Characters of the dentition and skull of C. kimballensis are compared with those of other species of the genus, and with those of Cynomys.

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The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra Jan 1967

The Brule-Gering (Oligocene-Miocene) Contact In The Wildcat Ridge Area Of Western Nebraska, C. Bertrand Schultz, Charles H. Falkenbach, Carl F. Vondra

Bulletin of the University of Nebraska State Museum (1924–2023)

The contact between the Brule Formation (Oligocene) and the Gering Formation (Miocene) can be readily distinguished in the Wildcat Ridge area, as elsewhere in western Nebraska. At the critical fossiliferous exposures at Castle Rock in Scotts Bluff County, the contact on the south face between the two formations is defined as 129 feet above the base of the "Upper Ash" bed, which corresponds to the upper portion of Darton's (1899, PI. C, Fig. D, following p. 754) "sandy phase" in the upper part of the Brule. Certain key beds in the Gering Formation can be traced laterally from a channel …

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Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed Jan 1967

Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Devonian Of The North-Central Region, United States, C. Collinson, Marv Carlson Jan 1967

Devonian Of The North-Central Region, United States, C. Collinson, Marv Carlson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Nebraska Groundwater Level (Decline & Rise), 1967 Jan 1967

Nebraska Groundwater Level (Decline & Rise), 1967

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot Jan 1967

Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot Jan 1967

Early Silurian Brachiopods From The Subsurface Of Southeastern Nebraska, M. P. Carlson, A. J. Boucot

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed Jan 1967

Centennial Guidebook To The Geology Of Southeastern Nebraska, R. R. Burchett, E. C. Reed

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Twelve Maps Summarizing The Geologic Framework Of Southeastern Nebraska, R. R. Burchett, M. P. Carlson Sep 1966

Twelve Maps Summarizing The Geologic Framework Of Southeastern Nebraska, R. R. Burchett, M. P. Carlson

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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Availability And Use Of Water In Nebraska, F. Butler Shaffer Jun 1966

Availability And Use Of Water In Nebraska, F. Butler Shaffer

Conservation and Survey Division: Faculty and Staff Publications

No abstract provided.

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