{"title":"Pelycosaurian-Grade (Amniota: Synapsida) Footprints from the Lower Permian Dunkard Group of Pennsylvania and West Virginia","authors":"S. Lucas, Albert D. Kollar, D. Berman, A. Henrici","doi":"10.2992/007.083.0404","DOIUrl":null,"url":null,"abstract":"ABSTRACT The Lower Permian Dunkard Group has yielded a sparse record of tetrapod footprints that are assigned to the ichnogenera Dimetropus Romer and Price, 1940, Dromopus Marsh, 1894, and Limnopus Marsh, 1894. We report two new occurrences of Dimetropus that significantly extend its stratigraphic range in the Dunkard Group to the Washington and Greene formations. The only previous Dunkard record of Dimetropus is of D. berea (Tilton, 1931), the type ichnospecies of the ichnogenus, from the Waynesburg Formation of West Virginia. Dimetropus (eupelycosaur), Dromopus (araeoscelid), and Limnopus (large temnospondyl) footprints are present in many Late Pennsylvanian-Early Permian footprint assemblages. The Dunkard footprints of Dimetropus reported here are very large for the ichnogenus, so it seems likely they were made by one of the relatively large eupelycosaurs, Dimetrodon Cope, 1877, Ophiacodon Marsh, 1878, or Ctenospondylus Romer, 1936, known from Dunkard Group body fossils.","PeriodicalId":50771,"journal":{"name":"Annals of Carnegie Museum","volume":"39 1","pages":"287 - 294"},"PeriodicalIF":0.6000,"publicationDate":"2016-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Carnegie Museum","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.2992/007.083.0404","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
引用次数: 13
Abstract
ABSTRACT The Lower Permian Dunkard Group has yielded a sparse record of tetrapod footprints that are assigned to the ichnogenera Dimetropus Romer and Price, 1940, Dromopus Marsh, 1894, and Limnopus Marsh, 1894. We report two new occurrences of Dimetropus that significantly extend its stratigraphic range in the Dunkard Group to the Washington and Greene formations. The only previous Dunkard record of Dimetropus is of D. berea (Tilton, 1931), the type ichnospecies of the ichnogenus, from the Waynesburg Formation of West Virginia. Dimetropus (eupelycosaur), Dromopus (araeoscelid), and Limnopus (large temnospondyl) footprints are present in many Late Pennsylvanian-Early Permian footprint assemblages. The Dunkard footprints of Dimetropus reported here are very large for the ichnogenus, so it seems likely they were made by one of the relatively large eupelycosaurs, Dimetrodon Cope, 1877, Ophiacodon Marsh, 1878, or Ctenospondylus Romer, 1936, known from Dunkard Group body fossils.
期刊介绍：
Annals of Carnegie Museum is a quarterly journal that publishes peer-reviewed short and medium-length original scientific contributions in organismal biology, earth sciences, and anthropology, in 40 by 52.5 pica format (168 by 220 mm or 6-5/8 by 8-5/8 inches). Subject matter must be relevant to Carnegie Museum of Natural History scientific sections or Powdermill Nature Reserve (PNR), preferably with connection to the Carnegie collection and/or personnel. Carnegie Museum staff and research associates receive publication priority, but others are encouraged to submit papers, especially those manuscripts explicitly based on the Carnegie collection.
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