1 Uphill-Only Dinosaur Tracks? a Talking Rocks 2017 Participant
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
A New Insect Trackway from the Upper Jurassic—Lower Cretaceous Eolian Sandstones of São Paulo State, Brazil: Implications for Reconstructing Desert Paleoecology
A new insect trackway from the Upper Jurassic—Lower Cretaceous eolian sandstones of São Paulo State, Brazil: implications for reconstructing desert paleoecology Bernardo de C.P. e M. Peixoto1,2, M. Gabriela Mángano3, Nicholas J. Minter4, Luciana Bueno dos Reis Fernandes1 and Marcelo Adorna Fernandes1,2 1 Laboratório de Paleoicnologia e Paleoecologia, Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Carlos (UFSCar), São Carlos, São Paulo, Brazil 2 Programa de Pós Graduacão¸ em Ecologia e Recursos Naturais, Centro de Ciências Biológicas e da Saúde, Universidade Federal de São Carlos (UFSCar), São Carlos, São Paulo, Brazil 3 Department of Geological Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada 4 School of the Environment, Geography, and Geosciences, University of Portsmouth, Portsmouth, Hampshire, United Kingdom ABSTRACT The new ichnospecies Paleohelcura araraquarensis isp. nov. is described from the Upper Jurassic-Lower Cretaceous Botucatu Formation of Brazil. This formation records a gigantic eolian sand sea (erg), formed under an arid climate in the south-central part of Gondwana. This trackway is composed of two track rows, whose internal width is less than one-quarter of the external width, with alternating to staggered series, consisting of three elliptical tracks that can vary from slightly elongated to tapered or circular. The trackways were found in yellowish/reddish sandstone in a quarry in the Araraquara municipality, São Paulo State. Comparisons with neoichnological studies and morphological inferences indicate that the producer of Paleohelcura araraquarensis isp. nov. was most likely a pterygote insect, and so could have fulfilled one of the Submitted 6 November 2019 ecological roles that different species of this group are capable of performing in dune Accepted 10 March 2020 deserts. -
Vermilion Cliffs
2014 Manager’s Manager’s Annual Report Vermilion Cliffs National Monument Manager’s Annual Report FY 2014 Arizona Table of Contents 1 Vermilion Cliffs Profile 2 2 Planning and NEPA 5 3 Year’s Projects and Accomplishments 6 4 Science 10 5 Resources, Objects, Values, and Stressors 11 Summary of Performance Measures 20 6 7 Manager’s Letter 21 1 Vermilion Cliffs Profile 1 Designating Authority Designating Authority: Presidential Proclamation Date of Designation: November 9, 2000 If other legislation exists that has affected the management of the unit, list it here as well. N/A Acreage Total Acres in Unit BLM Acres Other Fed. Acres State Acres Other Acres 293,687 279,566 0 13,438 683 (private) Contact Information Unit Manager Phone E-mail Mailing Address Kevin Wright 435-688-3241 [email protected] 345 E Riverside Dr. St. George, UT 84790 Field Office District Office State Office Arizona Strip Arizona Strip AZ Budget Total FY14 Budget Subactivity 1711 Other Subactivities’ Other Funding Contributions 789,359 376,009 413,350 2 Map of Vermilion Cliffs National Monument 3 Managing Partners If an outside group or a non-BLM agency (like the Park or Forest Service) formally helps to manage the unit, please describe them in this section. If BLM is the sole official manager of the unit, simply enter “N/A.” Regular partnerships and partner activities are covered in a later section of this report. N/A Staffing How is the unit’s work accomplished? Does it have its own dedicated manager and staff? Does it share staff with another unit, BLM office, or other Federal agency? Summarize the types (e.g., job series) and numbers of staff members. -
Dinotracks.Indb 358 1/22/16 11:23 AM Dinosaur Tracks in Eolian Strata: New Insights Into Track Formation, Walking Kinetics and Trackmaker Behavior 18
358 DinoTracks.indb 358 1/22/16 11:23 AM Dinosaur Tracks in Eolian Strata: New Insights into Track Formation, Walking Kinetics and Trackmaker Behavior 18 David B. Loope and Jesper Milàn Dinosaur tracks are abundant in wind-blown hooves of the bison deformed soft, laminated sediment – the Mesozoic deposits, but the nature of loose eolian sand perfect medium to preserve recognizable tracks. The next makes it difficult to determine how they are preserved. This windstorm buried the tracks. Today, the thick cover of grasses also raises the questions: Why would dinosaurs be walking protects the land surface so well that there are no soft, lami- around in dune fields in the first place? And, if they did go nated sediments for cattle to step on. And, if any tracks were, there, why would their tracks not be erased by the next wind somehow, to get formed, no moving sediment would be avail- storm? able to bury them. Mesozoic eolian sediments around the world, which have been the focus of a number of case studies Introduction in recent years, preserve the tracks of dinosaurs that walked on actively migrating sand dunes. This chapter summarizes Most dunes today form only in deserts and along shore- the known occurrences of dinosaur tracks in Mesozoic eo- lines – the only sandy land surfaces that are nearly devoid of lian strata and discusses their unique modes of preservation plants. Normally plants slow the wind at the ground surface and the anatomical and behavioral information about the enough that sand will not move even when the plant cover trackmakers that can be deduced from them. -
Arizona, Road Trips Are As Much About the Journey As They Are the Destination
Travel options that enable social distancing are more popular than ever. We’ve designated 2021 as the Year of the Road Trip so those who are ready to travel can start planning. In Arizona, road trips are as much about the journey as they are the destination. No matter where you go, you’re sure to spy sprawling expanses of nature and stunning panoramic views. We’re looking forward to sharing great itineraries that cover the whole state. From small-town streets to the unique landscapes of our parks, these road trips are designed with Grand Canyon National Park socially-distanced fun in mind. For visitor guidance due to COVID19 such as mask-wearing, a list of tourism-related re- openings or closures, and a link to public health guidelines, click here: https://www.visitarizona. com/covid-19/. Some attractions are open year-round and some are open seasonally or move to seasonal hours. To ensure the places you want to see are open on your travel dates, please check their website for hours of operation. Prickly Pear Cactus ARIZONA RESOURCES We provide complete travel information about destinations in Arizona. We offer our official state traveler’s guide, maps, images, familiarization trip assistance, itinerary suggestions and planning assistance along with lists of tour guides plus connections to ARIZONA lodging properties and other information at traveltrade.visitarizona.com Horseshoe Bend ARIZONA OFFICE OF TOURISM 100 N. 7th Ave., Suite 400, Phoenix, AZ 85007 | www.visitarizona.com Jessica Mitchell, Senior Travel Industry Marketing Manager | T: 602-364-4157 | E: [email protected] TRANSPORTATION From east to west both Interstate 40 and Interstate 10 cross the state. -
Stegosaurian Footprints from the Morrison Formation of Utah and Their Implications for Interpreting Other Ornithischian Tracks Gerard D
Stegosaurian footprints from the Morrison Formation of Utah and their implications for interpreting other ornithischian tracks Gerard D. Gierliński and Karol Sabath Polish Geological Institute, Rakowiecka 4, 00-975 Warsaw, Poland. e-mail: [email protected] ABSTRACT - The supposed stegosaurian track Deltapodus Whyte & Romano, 1994 (Middle Jurassic of England) is sauro- pod-like, elongate and plantigrade, but many blunt-toed, digitigrade, large ornithopod-like footprints (including pedal print cast associated with the manus of Stegopodus Lockley & Hunt, 1998) from the Upper Jurassic of Utah, better fit the stego- saurian foot pattern. The Morrison Formation of Utah yielded other tracks fitting the dryomorph (camptosaur) foot pattern (Dinehichnus Lockley et al., 1998) much better than Stegopodus. If the Stegopodus pedal specimen (we propose to shift the emphasis from the manus to the pes in the revised diagnosis of this ichnotaxon) and similar ichnites are proper stegosaur foot- prints, Deltapodus must have been left by another thyreophoran trackmaker. Other Deltapodus-like (possibly ankylosaurian) tracks include Navahopus Baird,1980 and Apulosauripus Nicosia et al., 1999. Heel-dominated, short-toed forms within the Navahopus-Deltapodus-Apulosauripus plexus differ from the gracile, relatively long-toed Tetrapodosaurus Sternberg, 1932, traditionally regarded as an ankylosaurian track. Thus, the original interpretation of the latter as a ceratopsian track might be correct, supporting early (Aptian) appearance of ceratopsians in North America. Isolated pedal ichnites from the Morrison Formation (with a single tentatively associated manus print, and another one from Poland) and the only known trackways with similar footprints (Upper Jurassic of Asturias, Spain) imply bipedal gait of their trackmakers. Thus, problems with stegosaur tracks possibly stem from the expectation of their quadrupedality. -
The Anatomy and Phylogenetic Relationships of Antetonitrus Ingenipes (Sauropodiformes, Dinosauria): Implications for the Origins of Sauropoda
THE ANATOMY AND PHYLOGENETIC RELATIONSHIPS OF ANTETONITRUS INGENIPES (SAUROPODIFORMES, DINOSAURIA): IMPLICATIONS FOR THE ORIGINS OF SAUROPODA Blair McPhee A dissertation submitted to the Faculty of Science, University of the Witwatersrand, in partial fulfilment of the requirements for the degree of Master of Science. Johannesburg, 2013 i ii ABSTRACT A thorough description and cladistic analysis of the Antetonitrus ingenipes type material sheds further light on the stepwise acquisition of sauropodan traits just prior to the Triassic/Jurassic boundary. Although the forelimb of Antetonitrus and other closely related sauropododomorph taxa retains the plesiomorphic morphology typical of a mobile grasping structure, the changes in the weight-bearing dynamics of both the musculature and the architecture of the hindlimb document the progressive shift towards a sauropodan form of graviportal locomotion. Nonetheless, the presence of hypertrophied muscle attachment sites in Antetonitrus suggests the retention of an intermediary form of facultative bipedality. The term Sauropodiformes is adopted here and given a novel definition intended to capture those transitional sauropodomorph taxa occupying a contiguous position on the pectinate line towards Sauropoda. The early record of sauropod diversification and evolution is re- examined in light of the paraphyletic consensus that has emerged regarding the ‘Prosauropoda’ in recent years. iii ACKNOWLEDGEMENTS First, I would like to express sincere gratitude to Adam Yates for providing me with the opportunity to do ‘real’ palaeontology, and also for gladly sharing his considerable knowledge on sauropodomorph osteology and phylogenetics. This project would not have been possible without the continued (and continual) support (both emotionally and financially) of my parents, Alf and Glenda McPhee – Thank you. -
Paria Canyon Vermilion Cliffs Wilderness Management Plan
01\16• ,.J ~ UNITED STATES DEPARTMENT OF THE INTERIOR -- BUREAU OF LAND MANAGEMENT ~Lf 1.,.J/ t'CI/C w~P 0 ARIZONA STRIP FIELD OFFICE/KANAB RESOURCE AREA PARIA CANYONNERMILION CLIFFS WILDERNESS MANAGEMENT PLAN AMENDMENT ENVIRONMENTAL ASSESSMENT EA-AZ-01 0-97-16 I. INTRODUCTION The Paria Canyon - Vermilion Cliffs Wilderness Area contains 112,500 acres (92,500 acres in Coconino County, Arizona and 20,000 acres in Kane County, Utah) of public lands managed by the Bureau of Land Management. The area is approximately 10 to 30 miles west of Page, Arizona. Included are 35 miles of the Paria river Canyon, 15 miles of the Buckskin Gulch, Coyote Buttes, and the Vermilion Cliffs from Lee's Ferry to House Rock Valley (Map 1). The Paria Canyon, Buckskin Gulch, Wire Pass, and the Coyote Buttes Special Management Area are part of the larger Paria Canyon-Vermilion Cliffs Wilderness, designated in August 1984 (Map 2). Existing management plan guidance is to protect primitive, natural conditions and the many outstanding opportunities for hiking, backpacking, photographing, or viewing in the seven different highly scenic geologic formations from which the canyons and buttes are carved. Visitor use in Paria Canyon, Buckskin Gulch, and Coyote Buttes has increased from 2,400 visits in Fiscal Year (FY) 1986 to nearly 10,000 visits in FY96-a 375% increase in use over 10 years. This increased use, combined with the narrow nature of the canyons, small camping terraces, and changing visitor use patterns, is impacting the wilderness character of these areas. Human waste, overcrowding, and public safety have become important issues. -
Directions to Hiking to Coyote Buttes & the Wave
Coyote Buttes/The Waves Ron Ross December 22, 2007 Coyote Buttes is located in the Paria Canyon-Vermilion Cliffs Wilderness just south of US¶89 about halfway between Kanab, Utah and Page, Arizona. The wilderness area sits on the border between Arizona and Utah and is managed by the BLM. It is divided into two areas: Coyote Buttes North and Coyote Buttes South. To visit either of the Coyote Buttes areas you will need to purchase a hiking permit in advance (see https://www.blm.gov/az/paria/index.cfm?usearea=CB). Only 20 people per day (10 advanced reservations and 10 walk-ins) are allowed to hike in, and separate permits are required for the North and South sections. The walk-in permits can be acquired off the web, from the BLM office in Kanab, or from the Paria Ranger Station near the Coyote Buttes. The Northern section of Coyote Buttes is by far the most popular, as it contains the spectacular sandstone rock formations, pictured below, known as the Wave and the Second Wave. As a result of their popularity, getting permits for the Northern section is very competitive and often results in a lottery to select the lucky folks for a particular day. The Southern section also contains some outstanding sandstone formations known as the Te- pees. However, the road to the southern section can be very sandy and challenging, even for high- clearance 4x4 vehicles. As a result, walk-in permits for the Southern section are widely available. COYOTE BUTTES NORTH—THE WAVE Trailhead The hike to the wave begins at the Wire Pass Trailhead about 8 miles south of US¶89 on House Rock Valley Road. -
Sheeting Joints and Polygonal Patterns in the Navajo Sandstone, Southern Utah: Controlled by Rock Fabric, Tectonic Joints, Buckling, and Gullying David B
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Papers in the Earth and Atmospheric Sciences Earth and Atmospheric Sciences, Department of 2018 Sheeting joints and polygonal patterns in the Navajo Sandstone, southern Utah: Controlled by rock fabric, tectonic joints, buckling, and gullying David B. Loope University of Nebraska, Lincoln, [email protected] Caroline M. Burberry University of Nebraska - Lincoln, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/geosciencefacpub Part of the Earth Sciences Commons Loope, David B. and Burberry, Caroline M., "Sheeting joints and polygonal patterns in the Navajo Sandstone, southern Utah: Controlled by rock fabric, tectonic joints, buckling, and gullying" (2018). Papers in the Earth and Atmospheric Sciences. 519. http://digitalcommons.unl.edu/geosciencefacpub/519 This Article is brought to you for free and open access by the Earth and Atmospheric Sciences, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Papers in the Earth and Atmospheric Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Research Paper GEOSPHERE Sheeting joints and polygonal patterns in the Navajo Sandstone, southern Utah: Controlled by rock fabric, tectonic joints, buckling, GEOSPHERE, v. 14, no. 4 and gullying https://doi.org/10.1130/GES01614.1 David B. Loope and Caroline M. Burberry 14 figures; 1 table Department of Earth and Atmospheric Sciences, University of Nebraska, -
A Forgotten Collection of Vertebrate and Invertebrate Ichnofossils from the Nugget Sandstone (?Late Triassic-?Early Jurassic), Near Heber, Wasatch County, Utah
181 Lockley, M.G. & Lucas, S.G., eds., 2014, Fossil footprints of western North America: NMMNHS Bulletin 62 A FORGOTTEN COLLECTION OF VERTEBRATE AND INVERTEBRATE ICHNOFOSSILS FROM THE NUGGET SANDSTONE (?LATE TRIASSIC-?EARLY JURASSIC), NEAR HEBER, WASATCH COUNTY, UTAH DANIEL J. CHURE1, THOMAS ROGER GOOD2 AND GEORGE F. ENGELMANN3 1Dinosaur National Monument, Box 128, Jensen UT 84035 U.S.A. [email protected]; 2Department of Geology and Geophysics, Frederick Albert Sutton Build- ing, University of Utah, 115 S 1460 East, Salt Lake City, UT 84112 U.S.A. [email protected]; 3Department of Geography and Geology, University of Nebraska, Omaha, NE 68182 U.S.A. [email protected]; Abstract—In the University of Utah Ichnology Collection we have located a small collection of ichnofossils from the Nugget Sandstone that was part of an unpublished Master’s thesis by Sheryl Albers. This historically significant collection, which was made from an active stone quarry, includes invertebrate and vertebrate traces, both as latex molds of specimens and actual fossils. These specimens allow a description of all the ichnofossils from the Heber quarry, based on both museum specimens and field photos of uncollected fossils. The ichnofauna is typical of late Paleozoic and Mesozoic eolian dune slipface paleoenvironrnents. Most of the vertebrate traces are referable to Brasilichnium, with the exception of three rare lacertoid trackways, one of which preserves excellent detail. Invertebrate trackways are referable to both Paleohelcura and Octopodichnus. A few Entradichnus burrows are present. The abundance of trace fossils and closely spaced invertebrate and vertebrate traces with parallel orientation and the same direction of travel on the same bedding surface is unusual in the Nugget Sandstone and suggests that further examination of the Nugget exposures in the Heber area might prove fruitful. -
Sauropod Tracks in the Early Jurassic of Poland
Sauropod tracks in the Early Jurassic of Poland GERARD cIpnuŃsru Gierliński, G. 1991. Sauropod tracks in the Early Jurassic of Poland. - Acta Palaeonto- logica P olonica 42, 4, 533-538. After the discovery of Early Jurassic sauropod tracks in northern Italy, Polish Liassic strata revealed a second comparably early record of sauropod footpńnts in Europe. In comparison with thę Italian material, described tracks seem to be left by juvenile or small primitive sauropods,presumably 4.4 m and 5.5 m long. Key w o rd s: Sauropoda,tracks, Early Jurassic,Poland. Gerard Gierliński, Geological Museum of the Polish Geological Institute, ul. Rako- wiecka 4, PL-00-975 Warszawa, Poland. Introduction The specimensreported herein are the first sauropodomorphtracks discoveredin the Liassic deposits of the Holy Cross Mountains, central Poland, thus adding to the previous ichnological record of theropods and ornithischians in that region (e.9., Gierliński 1991, 1995b, 1996).Footprints were found in June of 1997, on two fallen slabs of thę yellowish gray,fine-grained sandstone, below the exposurelocated along Kamionka River, in Gromadzice (5 km southof the town of ostrowiec Swiętokrzyski). The possible track-bearingstrata represent early Hettangianfluvial plain deposits of the Zagaje Formation, and/or the middle Hettangian deltaic plain deposits of the SkłobyFormation (G. Pienkowski personalcommunication; see Pieńkowski 1991for generalgeological data). Description The specimen Muz. PIG 1560.II.60(Fig. 1,Ą) comprises a trackway fragment, naturalcasts of the left and the right pes-manusset. Cast of the left pes impression is broken,being incompleteposteriorly. Trackway Seemsto be nźIffow-gaugeSensu Farlow (1992).Ratio of pace length (measuredbętween the most anteriorpoints of 534 Sauropod trącks: GIERLŃSKI A - Fig. -
Nature Photography
Experiences and Changes Text and Photography Copyright Pete and Alice Bengeyfield All rights reserved. Antelope Canyon. Coyote Buttes. Two small patches of sandstone that in recent years have become photographic icons of the red rock country. Landscape photographers that were formerly judged by their treatment of Delicate Arch or the Great White Throne, now make pilgrimages to these new locations in order to define the Colorado Plateau. Both are intimately spectacular. Both reflect the color, form, and texture that are the hallmarks of the region. However, although they are products of the erosive forces that shaped the Plateau, they are quite different in appearance. Antelope Canyon is an underground kaleidoscope of color. Beams of sunlight penetrate a narrow slit in the earth's surface, bouncing off planes and angles of sandstone that have been shaped over the years by the surging waters of flash floods. In dark, narrow canyons, a spectrum of warm colors change constantly with the sun's measured pace across the sky. Coyote Buttes is the anti-canyon. Twisted sandstone outcrops split the sky from the backbone of a high ridge that rises in isolation above the surrounding sagebrush hills. At dawn and dusk, long, low light paints the layered rock in Colorado Plateau colors, while sinuous curves and shadows intertwine the scene. The two are roughly a hundred miles apart, down on the Arizona-Utah border. In May of 2000, my wife and I made a week long trip to photograph them. I had been to Antelope Canyon twice before, in 1990 and 1993, but despite having hiked nearby Buckskin Gulch, had never visited Coyote Buttes.