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2013 | 58 | 4 |
Tytuł artykułu

A New Deinonychosaurian Track from the Lower Cretaceous Hekou Group, Gansu Province, China

Treść / Zawartość
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Języki publikacji
EN
Abstrakty
EN
Herein we describe deinonychosaurian (Dinosauria: Theropoda) tracks in the Lower Cretaceous Hekou Group at sites I and II of Liujiaxia Dinosaur National Geopark, Gansu Province, China. The site preserves 71 didactyl tracks, the largest concentration of deinonychosaurian tracks in Asia. The tracks pertain to a new dromaeopodid ichnospecies: Dromaeosauripus yongjingensis ichnosp. nov., which is diagnosed by: a digital pad formula of x−1−3−4−x and a mean divarication angle between digits III and IV of 19°, and having the proximal portion of digit II contacting the anterior margin of a large, rounded metatarsophalangeal pad. Six Dromaeosauripustrackways from site II comprise at least two, and possibly three, turning trackways in which the track maker(s) turned without slowing down. None of the Dromaeosauripus trackways are parallel or closely spaced, suggesting that they were made by solitary track makers. Estimates of dromaeopodid track−maker sizes are between 61–300 cm, well within the size range established by body fossils of both dromaeosaurids and troodontids.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
58
Numer
4
Opis fizyczny
p.723-730,fig.,ref.
Twórcy
autor
  • School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
  • Department of Biological Sciences, University of Alberta, 11455 Saskatchewan Drive, Edmonton, Alberta T6G 2E9, Canada
autor
  • Geological Museum of Gansu, Lanzhou 730040, China
autor
  • Physical Sciences Department, Dixie State College, 225 South 700 East, St. George, Utah 84770, USA
autor
  • Pipestone Creek Dinosaur Initiative, Clairmont, Alberta T0H 0W0, Canada
autor
  • Fukui Prefectural Dinosaur Museum, 51-11, Terao, Muroko, Katsuyama, Fukui 911-8601, Japan
autor
  • Toyama Science Museum, 1-8-31 Nishinakano-machi, Toyama, Toyama, 939-8084, Japan
autor
  • Geological Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, South Korea
autor
  • Department of Biological Sciences, University of Alberta, 11455 Saskatchewan Drive, Edmonton, Alberta T6G 2E9, Canada
Bibliografia
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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