Cookeroo, a New Genus of Fossil Kangaroo (Marsupialia, Macropodidae) from the Oligo-Miocene of Riversleigh, Northwestern Queensland, Australia

Kaylene Butler; Kenny J. Travouillon; Gilbert J. Price; Michael Archer; Suzanne J. Hand

doi:10.1080/02724634.2016.1083029

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1 May 2016 Cookeroo, a New Genus of Fossil Kangaroo (Marsupialia, Macropodidae) from the Oligo-Miocene of Riversleigh, Northwestern Queensland, Australia

Kaylene Butler, Kenny J. Travouillon, Gilbert J. Price, Michael Archer, Suzanne J. Hand

Author Affiliations +

J. of Vertebrate Paleontology, 36(3): (2016). https://doi.org/10.1080/02724634.2016.1083029

Abstract

A new genus of Oligo-Miocene kangaroo (Macropodiformes), Cookeroo, and two new species, Cookeroo bulwidarri and C. hortusensis, are described from the Riversleigh World Heritage Area, northern Australia. Species of Cookeroo are distinguished from other basal macropodids by possessing a unique combination of characters including an expanded masseteric canal confluent with the mandibular canal that extends to below m1, a sinuous i1 with enamel on the buccal surface only and with dorsal and ventral flanges present, a dentary with a marked inflection of the ventral border below m3, bilophodont molars, and an elongate third premolar. We assess the phylogenetic relationships of the genus using a combination of two previously published morphological matrices. Our analysis recovers Cookeroo species as early-branching members of a clade that also contains macropodines, sthenurines, and lagostrophines.

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Kaylene Butler, Kenny J. Travouillon, Gilbert J. Price, Michael Archer and Suzanne J. Hand "Cookeroo, a New Genus of Fossil Kangaroo (Marsupialia, Macropodidae) from the Oligo-Miocene of Riversleigh, Northwestern Queensland, Australia," Journal of Vertebrate Paleontology 36(3), (1 May 2016). https://doi.org/10.1080/02724634.2016.1083029

Received: 6 February 2015; Accepted: 1 August 2015; Published: 1 May 2016

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