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Landman, Neil H. [VerfasserIn]; Johnson, Ralph O. [VerfasserIn]; Edwards, Lucy E. [VerfasserIn]

Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America. Part 2, Northeastern Monmouth County, New Jersey. Bulletin of the AMNH ; no. 287 ; Northeastern Monmouth County, New Jersey ; Atlantic coastal cephalopods

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  • Medientyp: Sonstige Veröffentlichung; E-Book
  • Titel: Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America. Part 2, Northeastern Monmouth County, New Jersey. Bulletin of the AMNH ; no. 287 ; Northeastern Monmouth County, New Jersey ; Atlantic coastal cephalopods
  • Beteiligte: Landman, Neil H. [VerfasserIn]; Johnson, Ralph O. [VerfasserIn]; Edwards, Lucy E. [VerfasserIn]
  • Erschienen: New York, NY : American Museum of Natural History, 2004
  • Umfang: 4927798 bytes
  • Sprache: Englisch
  • Schlagwörter: Stratigraphic correlation -- United States ; Fossil -- New Jersey -- Monmouth County ; QH1 .A4 no.287 2004 ; Mollusks ; Paleontology -- Gulf Coast (U.S.) ; Paleontology -- Cretaceous -- Atlantic Coast (U.S.) ; Paleontology -- Cretaceous -- New Jersey -- Monmouth County ; Paleontology -- New Jersey -- Monmouth County ; Fossil -- Atlantic Coast (U.S.) ; Cephalopoda ; Paleontology -- Cretaceous -- Gulf Coast (U.S.) ; Paleontology -- Atlantic Coast (U.S.) ; Ammonoidea -- New Jersey -- Monmouth County ; Cretaceous-Paleogene boundary -- Atlantic Coast (U.S.)
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  • Beschreibung: 107 p. : ill. (2 col.), maps ; 26 cm. ; Includes bibliographical references (p. 96-105). ; The sedimentary deposits of the New Jersey Coastal Plain span the Cretaceous/Tertiary boundary and reveal a complex stratigraphy in the northeastern part of their outcrop belt. Newly discovered exposures of the New Egypt Formation in northeastern Monmouth County, New Jersey, indicate that a tongue of this formation, previously thought to be restricted in outcrop to southwestern Monmouth County, extends to the northeast. This formation is sandwiched between the Tinton Formation below and the Hornerstown Formation above. The upper contact is unconformable. Fossils occur in the upper part of the New Egypt Formation and the basal part of the Hornerstown Formation and are concentrated at the formational contact--this accumulation is known as the Main Fossiliferous Layer. The Discoscaphites minardi Assemblage Zone occurs in the New Egypt Formation approximately 2 m below the base of the Hornerstown Formation and contains Discoscaphites minardi Landman et al., 2004, Discoscaphites sp., Eubaculites carinatus (Morton, 1834), Eubaculites sp., and Eutrephoceras dekayi (Morton, 1834). Associated dinoflagellates include Deflandrea galatea (Lejeune-Carpentier, 1942) Lentin & Williams, 1973, and Thalassiphora pelagica (Eisenack, 1954) Eisenack & Gocht, 1960. The D. minardi Zone represents the middle part of the Upper Maastrichtian corresponding to the upper part of calcareous nannofossil Subzone CC26a and the lower part of Subzone CC26b. The Discoscaphites iris Assemblage Zone occurs at the top of the New Egypt Formation in an interval at least 20 cm thick and contains Discoscaphites iris (Conrad, 1858), Discoscaphites gulosus (Morton, 1834), D. minardi, Eubaculites latecarinatus (Brunnschweiler, 1966), E. carinatus, Sphenodiscus pleurisepta (Conrad, 1857), Sphenodiscus sp., and Eutrephoceras dekayi. Associated dinoflagellates include Palynodinium grallator Gocht, 1970, and T. pelagica. The D. iris Zone represents the uppermost ...