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Tuesday, October 13, 2020 | History

2 edition of Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans found in the catalog.

Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans

John G. Maisey

Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans

by John G. Maisey

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  • 34 Currently reading

Published by American Museum of Natural History in New York, NY .
Written in English

    Subjects:
  • Cladodoides wildungensis.,
  • Skull -- Anatomy.,
  • Paleontology -- Devonian.,
  • Sharks, Fossil.,
  • Chondrichthyes, Fossil.,
  • Sharks -- Phylogeny.

  • Edition Notes

    StatementJohn G. Maisey.
    SeriesBulletin of the American Museum of Natural History -- no. 288.
    The Physical Object
    Pagination103 p. :
    Number of Pages103
    ID Numbers
    Open LibraryOL16131588M

     , Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans. Bull. by: found: Maisey, J.G. Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans, found: American heritage dict. of the Engl. lang., via WWW, Apr. 19, (braincase, also brain case: The part of the skull that encloses the brain; the cranium.

    in the well-known and often-cited braincase of "Cladodus" wildungen sis, from the Upper Devonian of Wildungen, Germany. In Otto Jaekel described the associated upper and lower jaws and dentition of a fossil shark from the Wildungen deposits, assigning the fossil to a new species of Cladodus, C. wildungensis. In both.   The oldest known fossilised shark braincase is from the mid-Devonian period and is estimated to be million years of age, possibly belonging to a xenacanth. Gavin Young found the oldest partially articulated fossilised shark remains, which combine a weird mix of features, possibly also originating from a xenacanth.

    In Otto Jaekel described the associated upper and lower jaws and dentition of a fossil shark from the Wildungen deposits, assigning the fossil to a new species of Cladodus, C. wildungensis. In both Eric Stensiö and Walter Gross independently described isolated shark braincases from the same by: Cladodoides wildungensis (Jaekel), Upper Devonian (Frasnian); Wildungen, Germany, P , Forschungsinstitut und Naturmuseum Senckenberg, Frankfurt, isolated three-dimensional braincase (probably from a ctenacanth shark) preserved in a carbonate matrix (Gross, , Maisey, c, Maisey, , Schaeffer, ). Scanned by R. Ketcham and M Cited by:


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Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans by John G. Maisey Download PDF EPUB FB2

Abstract: "The braincase of an Upper Devonian shark (Cladodoides wildungensis) is investigated using high-resolution CT scanning, and its internal and external morphology is described from three-dimensional digital reconstructions.

Many features are shared with modern elasmobranchs (neoselachians); these mostly represent conserved elasmobranch, chondrichthyan, or. The braincase of an Upper Devonian shark (Cladodoides wildungensis) is investigated using high-resolution CT scanning, and its internal and external morphology is described from three- dimensional digital reconstructions.

Abstract The braincase of an Upper Devonian shark (Cladodoides wildungensis) is investigated using high-resolution CT scanning, and its internal and external morphology is described from three-dimensional digital reconstructions.

Many features are. TY - BOOK TI - Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans. Bulletin of the AMNH ; no.

UR - PY - AU - Maisey, John G. ER. Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans Author: John G Maisey.

The braincase of an Upper Devonian shark (Cladodoides wildungensis) is investigated using high-resolution CT scanning, and its internal and external morphology is described from three-dimensional. Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early : John G.

Maisey. Martin Brazeau now presents the first detailed description of the braincase of Ptomacanthus, an acanthodian that lived in the Early Devonian acanthodian heyday, about Cited by: Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans.

Bulletin of the American Museum of Natural History, 1–, 38 fig. GINTER, M. & MAISEY, J.G. () The braincase and jaws of Cladodus from the Lower Carboniferous of Scotland. Abstract p.: ill. ; 26 es bibliographical references (p. )."The braincase of an Upper Devonian shark (Cladodoides wildungensis) is investigated using high-resolution CT scanning, and its internal and external morphology is described from three-dimensional digital : John G.

Maisey. The braincase and jaws of Cladodus from the lower Carboniferous of Scotland. Palaeontology Article in Palaeontology 50(2) March with Reads.

FNSF P, isolated small shark braincase, Upper Devonian (Upper Frasnian), Wildungen Limestone, Wildungen, Germany; referred in the literature to either Cladodus wildungensis (Gross) or Cladodoides wildungensis (Maisey).

Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans. Bulletin of the American Museum of Natural History, 1–, 38 fig.

The braincase of the Middle Triassic shark Acronemus tuberculatus (Bassani, ) The braincase of the Middle Triassic shark Acronemus tuberculatus (Bassani, ) MAISEY, JOHN G. Abstract: The chondrocranium of the enigmatic Middle Triassic shark Acronemus tuberculatus is investigated using computerized tomography scanning and 3‐D digital reconstitution.

The crown is somewhat similar, mostly in the proportions of the cusps, to that of Ctenacanthus concinnus and Cladodoides wildungensis [65,66], but the median cusps of the latter two are labially flattened whereas in Gogoselache lynbeazleyae they are biconvex.

The asymmetry in Devonian ctenacanthids, albeit common, is never advanced to a point of occurrence of an Cited by: Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans. Bull. by: 3. FNSF P, isolated small shark braincase, Upper Devonian (Upper Frasnian), Wildungen Limestone, Wildungen, Germany; referred in the literature to either Cladodus wildungensis (Gross) or Cladodoides wildungensis (Maisey).Cited by: Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans / John G.

Maisey. -- New York: American Museum of Natural History, (Bulletin of the American Museum of Natural History no) [review serial]. BRAINCASE OF THE UPPER DEVONIAN SHARK CLADODOIDES WILDUNGENSIS (CHONDRICHTHYES, ELASMOBRANCHII), WITH OBSERVATIONS ON THE BRAINCASE IN EARLY CHONDRICHTHYANS.

Bulletin of the American Museum of Natural History, Vol. Issue., p. The floor of the braincase is comparatively flat in Dalatias (Shirai, pl. 8), but in other dalatiids there may be a very deep interorbital septum below the cranial cavity (e.g., Squaliolus; fig. 3C, D).In this form, the preorbital muscle has an extensive origin along the entire ventral part of the septum and is inserted on the lower jaw anterior to the mandibular adductor ().Cited by:.

Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans. Bull. by:   () Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans.

Bull Am Mus Nat Hist 1 – Cited by:   Maisey, J. G. (). Braincase of the Upper Devonian shark Cladodoides wildungensis (Chondrichthyes, Elasmobranchii), with observations on the braincase in early chondrichthyans.

Bulletin of the American Museum of Natural Cited by: 4.