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2015•Paleontological ResearchRequires access

The First Cenozoic Record of a Fossil Megamouth Shark (Lamniformes, Megachasmidae) from Asia

Taketeru Tomita, Kiyoko Yokoyama

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Abstract

The megamouth shark (Lamniformes, Megachasmidae) is one of four extant planktivorous elasmobranch lineages, but its fossil record is quite limited. In the present study, we report a new discovery of a rare megachasmid shark fossil from the late Miocene—early Pleistocene interval of Okinawa Island, Japan. To date, this specimen represents the only reliable record of a megachasmid fossil from Asia.

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What this paper is about

The megamouth shark (Lamniformes, Megachasmidae) is one of four extant planktivorous elasmobranch lineages, but its fossil record is quite limited. In the present study, we report a new discovery of a rare megachasmid shark fossil from the late Miocene—early Pleistocene interval of Okinawa Island, Japan. To date, this specimen represents the only reliable record of a megachasmid fossil from Asia.

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Available abstract

The megamouth shark (Lamniformes, Megachasmidae) is one of four extant planktivorous elasmobranch lineages, but its fossil record is quite limited. In the present study, we report a new discovery of a rare megachasmid shark fossil from the late Miocene—early Pleistocene interval of Okinawa Island, Japan. To date, this specimen represents the only reliable record of a megachasmid fossil from Asia.

Key concepts: Fossil Record, Cenozoic, Paleontology, Extant taxon, Pleistocene, Eutheria, Geology, Early Pleistocene

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The First Cenozoic Record of a Fossil Megamouth Shark (Lamniformes, Megachasmidae) from Asia — Research Paper | ScholarLens