DEVONIAN EURYPTERIDS FROM INDIANA AND PENNSYLVANIA BY ROY E. PLOTNICK1

The collection of the University of Michigan Museum of Paleontology contains specimens from two previously undescribed Devonian eurypterid localities. Specimens assigned to Pterygotus sp. come from the now flooded Northern Indiana Stone Quarry from Rensselaer, Jasper County, Indiana. The material is preserved as carbonaceous films in dolomites, probably from the Middle Devonian Muscatatuck Group. These are the youngest known specimens of pterygotid eurypterids. A single large body plate is described from the Famennian Oswayo Sandstone of Port Allegany, McKean Co., Pennsylvania and tentatively assigned to the huge stylonurid eurypterid Hallipterus. There are a number of fragmentary eurypterids described from the Upper Devonian of Pennsylvania, but no new material has been described since the 1930s. NEW SPECIMENS OF THE LATE EOCENE TURTLE CORDICHELYS (PLEURODIRA: PODOCNEMIDIDAE) FROM WADI AL HITAN AND QASR ELSAGHA IN THE FAY M PROVINCE OF EGYPT

[1]  E. Daeschler,et al.  VERTEBRATE TAPHONOMY, PALEONTOLOGY, SEDIMENTOLOGY, AND PALYNOLOGY OF A FOSSILIFEROUS LATE DEVONIAN FLUVIAL SUCCESSION, CATSKILL FORMATION, NORTH-CENTRAL PENNSYLVANIA, USA , 2020, Palaios.

[2]  P. Janvier,et al.  New Insights Into Late Devonian Vertebrates and Associated Fauna from the Cuche Formation (Floresta Massif, Colombia) , 2019, Journal of Vertebrate Paleontology.

[3]  R. Snodgrass.  Textbook of Arthropod Anatomy , 2019 .

[4]  G. Edgecombe,et al.  Stylonurine eurypterids from the Strud locality (Upper Devonian, Belgium): new insights into the ecology of freshwater sea scorpions , 2019, Geological Magazine.

[5]  J. Chamberlain,et al.  Depositional setting, taphonomy and geochronology of new fossil sites in the Catskill Formation (Upper Devonian) of north-central Pennsylvania, USA, including a new early tetrapod fossil , 2018, Palaeogeography, Palaeoclimatology, Palaeoecology.

[6]  P. Selden,et al.  From success to persistence: Identifying an evolutionary regime shift in the diverse Paleozoic aquatic arthropod group Eurypterida, driven by the Devonian biotic crisis , 2017, Evolution; international journal of organic evolution.

[7]  R. Wharton,et al.  Cheliceral Morphology in Solifugae (Arachnida): Primary Homology, Terminology, and Character Survey , 2015 .

[8]  H. Woodward.  A Monograph of the British Fossil Crustacea: Belonging to the Order Merostomata , 2012 .

[9]  J. Lamsdell,et al.  An Isolated Pterygotid Ramus (Chelicerata: Eurypterida) from the Devonian Beartooth Butte Formation, Wyoming , 2010, Journal of Paleontology.

[10]  J. Lamsdell,et al.  Cope's Rule and Romer's theory: patterns of diversity and gigantism in eurypterids and Palaeozoic vertebrates , 2010, Biology Letters.

[11]  J. Lamsdell,et al.  The systematics and phylogeny of the Stylonurina (Arthropoda: Chelicerata: Eurypterida) , 2010 .

[12]  A. Peretti,et al.  Chelicerae as male grasping organs in scorpions: sexual dimorphism and associated behaviour. , 2009, Zoology.

[13]  O. E. Tetlie.  Hallipterus excelsior, a Stylonurid (Chelicerata: Eurypterida) from the Late Devonian Catskill Delta Complex, and Its Phylogenetic Position in the Hardieopteridae , 2008 .

[14]  Markus Poschmann,et al.  Giant claw reveals the largest ever arthropod , 2008, Biology Letters.

[15]  O. E. Tetlie,et al.  Phylogeny and palaeoecology of the Adelophthalmoidea (Arthropoda; Chelicerata; Eurypterida) , 2008 .

[16]  O. E. Tetlie.  Distribution and dispersal history of Eurypterida (Chelicerata) , 2007 .

[17]  Randall F. Miller.  PTERYGOTUS ANGLICUS AGASSIZ (CHELICERATA: EURYPTERIDA) FROM ATHOLVILLE, LOWER DEVONIAN CAMPBELLTON FORMATION, NEW BRUNSWICK, CANADA , 2007 .

[18]  O. E. Tetlie,et al.  On the Emsian (Lower Devonian) arthropods of the Rhenish Slate Mountains: 5. Rare and poorly known eurypterids from Willwerath, Germany , 2006 .

[19]  A. Farjat.  Los géneros Praectenodonta , Praenucula y Notonucula (Palaeotaxodonta : Bivalvia) en el Siluro-Devónico de Bolivia , 2005 .

[20]  J. Shultz.  GROSS MUSCULAR ANATOMY OF LIMULUS POLYPHEMUS (XIPHOSURA, CHELICERATA) AND ITS BEARING ON EVOLUTION IN THE ARACHNIDA , 2001 .

[21]  G. Klapper,et al.  The Detroit River Group is Middle Devonian: Discussion on , 1995 .

[22]  V. P. Tollerton.  Morphology, taxonomy, and classification of the order Eurypterida Burmeister, 1843 , 1989, Journal of Paleontology.

[23]  K. Brock.  Minerals of the Rensselaer Stone Co. Quarry: Pleasant Ridge, Indiana , 1986 .

[24]  D. Mcgregor.  Devonian miospores of North America , 1979 .

[25]  J. Rodgers,et al.  Correlation of the Silurian and Devonian rocks in New York State , 1978 .

[26]  E. N. Kjellesvig-Waering.  A synopsis of the family Pterygotidae Clarke and Ruedemann, 1912 (Eurypterida) , 1964 .

[27]  E. N. Kjellesvig-Waering.  Revision of some Upper Devonian Stylonuridae (Eurypterida) from New York and Pennsylvania , 1963 .

[28]  C. A. Arnold,et al.  CONTRIBUTIONS FROM THE MUSEUM OF PALEONTOLOGY , 2006 .

[29]  J. Bridge,et al.  Coastal-fluvial palaeoenvironments and plant palaeoecology of the Lower Devonian (Emsian), Gaspé Bay, Québec, Canada , 2000, Geological Society, London, Special Publications.

[30]  R. Plotnick,et al.  The pterygotid telson as a biological rudder , 1988 .

[31]  J. B. Richardson,et al.  Miospores, Zonation and Correlation of Upper Devonian Sequences from Western New York State and Pennsylvania , 1988 .

[32]  P. Janvier,et al.  The Silurian and Devonian vertebrates of Bolivia , 1986, Bulletin de l’Institut français d’études andines.

[33]  C. D. Waterston,et al.  Cyrtoctenus wittebergensis sp. nov. (Chelicerata: Eurypterida), a large sweep-feeder from the Carboniferous of South Africa , 1985, Earth and Environmental Science Transactions of the Royal Society of Edinburgh.

[34]  P. Selden.  Functional morphology of the prosoma of Baltoeurypterus tetragonophthalmus (Fischer) (Chelicerata: Eurypterida) , 1981, Transactions of the Royal Society of Edinburgh: Earth Sciences.

[35]  C. D. Waterston.  I.—Further Observations on the Scottish Carboniferous Eurypterids , 1968, Transactions of the Royal Society of Edinburgh.

[36]  E. N. Kjellesvig-Waering.  A revision of the families and genera of the Stylonuracea (Eurypterida) / Erik N. Kjellsvig-Waering -- , 1966 .

[37]  L. Russell.  A new locality for fossil fishes and eurypterids in the middle Devonian of Gaspé, Quebec / , 1947 .

[38]  G. M. Ehlers.  A New Eurypterid from the Upper Devonian of Pennsylvania , 1935 .

[39]  B. Willard.  A New Chemung Eurypterid from Pennsylvania , 1933 .

[40]  E. W. Claypole.  Note on a Large Crustacean from the Catskill Group of Pennsylvania , 2022 .

[41]  Louis Agassiz.  Monographie des poissons fossiles du vieux grés rouge : ou système Dévonien (Old red sandstone) des Iles Britanniques et de Russie / par L. Agassiz. , 1844 .