Eocene neoselachians from the La Meseta formation, Seymour Island, Antarctic Peninsula

Welton, Bruce J.; Zinsmeister, William J.

doi:10.5962/p.241264

Cited by 24 publications

(5 citation statements)

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“…The foregoing shows the diversity of opinion that exists about the taxonomy of the extinct great white sharks. Of these opinions, we agree with Welton and Zinsmeister (1980) about the need for an extensive study of the dentitions of the living and extinct species. The abundance of Carcharodon megal¬ odon at the Lee Creek Mine and Gordon Hubbell's excellent private collection of C. carcharias dentitions, including as well those of other lamnids, facilitated our study of this problem.…”

Section: Isurus Oxyrinchus Rafinesque 1810 Figures 25 26supporting

confidence: 58%

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The Neogene Sharks, Rays, and Bony Fishes from Lee Creek Mine, Aurora, North Carolina

Purdy,

Schneider,

Applegate

et al. 2001

Smithsonian Contributions to Paleobiology

111

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The fish remains, including 104 species from 52 families, collected at the Lee Creek Mine near Aurora, Beaufort County, North Carolina, constitute the largest fossil marine fish assemblages known from the Coastal Plain of the eastern United States. The fish faunas came principally from the Pungo River Formation (Burdigalian, planktonic foraminifera zones N6-7) and the Yorktown Formation (Zanclian, planktonic foraminifera zone N18 and younger). A few specimens were obtained from the James City Formation (early-middle Pleistocene). As an assemblage, the fishes found in the Pungo River Formation, including 44 species of selachians and 10 species of teleosts, are most similar to those from the “Muschelsandstein” of the Swiss Molasse. The Yorktown Formation fish assemblage includes 37 species of selachians and 40 species of teleosts, derived mostly from the base of the Sunken Meadow Member. Although the Pungo River Formation fish fauna is dominated by warm-water (18°-25°C) taxa, the Yorktown Formation fossil fish fauna includes warm and cool water species. Both fish assemblages occur with a cool-temperate invertebrate fauna. The abundant remains in both faunas permit us to make the following interpretations concerning shark taxonomy. We reassign Megascyliorhinus to the family Parascyllidae and Parotodus benedenii (Le Hon) to the Lamnidae. Among the mako sharks, we designate the lectotype of Isurus desori (Agassiz) and synonymize it with 7. oxyrinchus Rafinesque and separate Isurus xiphodon (Agassiz) from I. hastalis (Agassiz). Palaeocarcharodon, Procarcharodon, Megaselachus, and Carcharocles are synonymized with Carcharodon. Sphyrna laevissima (Cope) is synonymized with S. zygaena (Linnaeus), and Galeocerdo triqueter Cope is synonymized with Alopias cf. A. vulpinus (Bonnaterre). This fauna produced four new records and two new species. Among the selachians, we note the first records of Megascyliorhinus, Rhincodon, Megachasma, and Isistius from the Atlantic Coastal Plain, and among the bony fishes, the first occurrences in the fossil record of Caulolatilus and Pomatomus. We also describe two new species of bony fishes, Lopholatilus rayus and Pagrushyneus.

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Section: Isurus Oxyrinchus Rafinesque 1810 Figures 25 26supporting

confidence: 58%

“…Although they did not elaborate on them, they found that the characters used to identify Procarcharodon also occur in Carcharodon carchar¬ ias. They reiterated Welton and Zinsmeister's (1980) call for an extensive study of recent and fossil Carcharodon teeth to help to resolve the problem.…”

Section: Isurus Oxyrinchus Rafinesque 1810 Figures 25 26mentioning

confidence: 99%

The Neogene Sharks, Rays, and Bony Fishes from Lee Creek Mine, Aurora, North Carolina

Purdy,

Schneider,

Applegate

et al. 2001

Smithsonian Contributions to Paleobiology

111

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show abstract

“…Antarctic Peninsula, as the mollusc-eating shark Ptychodus sp., but the specimens were re-evaluated by Welton & Zinsmeister (1980) and Grande & Eastman (1986) as presently undeterminable, even to order, and Cretaceous in age. At present, fossil fish remains are known from four sites in Antarctica.…”

Section: The Antarctic Fossil Recordmentioning

confidence: 99%

Fishes of the southern ocean

Gon¹,

Heemstra²

1990

433

167

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In recent years, and especially since the initiation of the BIOMASS (Biological Investigations of Marine Antarctic Systems and Stocks) Programme ten years ago, a large amount of information on the taxonomy and biology of Antarctic fishes has accumulated in many laboratories and institutions the world over. This, together with the fact that the last revisionary review of Antarctic fishes was produced by J.R. Norman (1938) more than half a century ago, was reason enough to undertake the production of a reference book that reviews current knowledge on the taxonomy, distribution and biology of Southern Ocean fishes.Thus, at a meeting of the BIOMASS Working Group on Fish Ecology held in August 1984, O. Gon of the J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa, introduced the Southern Ocean fish book project to a group of leading Antarctic ichthyologists. The proposal was immediately and enthusiastically endorsed by the group, and further, they agreed that the proposed book should be complementary to two other international projects already under way-the FAO Species Identification Sheets edited by W. Fischer and J.-C. , and the Guide to the Otoliths of Southern Ocean Fishes by T. Hecht (1987).From the beginning, it was recognised that the proposed treatise should be assembled in the same way as the now widely-acclaimed book Smiths' Sea Fishes, i.e. with contributions of different family accounts by a group of international experts each according to his/her own specialty. P.C. Heemstra, who was co-editor of the Smiths' Sea Fishes book, was invited to co-edit the Southern Ocean fish book. This new book includes contributions by 32 ichthyologists from 11 countries who document 272 species belonging to 49 families. Most of the new and highly accurate species illustrations were specially and meticulously prepared for this volume by the talented scientific artist D.P. Voorvelt of the J.L.B. Smith Institute, and will be treasured by the ichthyological community.Fishes of the Southern Ocean is a valuable synthesis of information on the taxonomy and biology of Antarctic fishes. The information provided will force ichthyologists to review current ideas on the origin, evolution and biogeography of the fishes of the Southern Ocean.

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“…Thus, the group might not have yet inhabited southern high latitudes. On the contrary, batomorphs with large and small teeth are abundant in Eocene beds of Marambio Island (the myliobatid Myliobatis, Rajidae; Welton and Zinsmeister, 1980;Long, 1994).…”

Section: Antarctic Late Cretaceous Fish Diversitymentioning

confidence: 99%

Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island

Cione

Santillana

Gouiric-Cavalli

et al. 2018

Cretaceous Research

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Eocene neoselachians from the La Meseta formation, Seymour Island, Antarctic Peninsula

Cited by 24 publications

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The Neogene Sharks, Rays, and Bony Fishes from Lee Creek Mine, Aurora, North Carolina

The Neogene Sharks, Rays, and Bony Fishes from Lee Creek Mine, Aurora, North Carolina

Fishes of the southern ocean

Before and after the K/Pg extinction in West Antarctica: New marine fish records from Marambio (Seymour) Island

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