Volume 306, Issue 7 p. 1762-1803
SPECIAL ISSUE ARTICLE

Iyuku raathi, a new iguanodontian dinosaur from the Early Cretaceous Kirkwood Formation, South Africa

Catherine A. Forster

Corresponding Author

Catherine A. Forster

Department of Biological Sciences, The George Washington University, Washington, District of Columbia, USA

Correspondence

Catherine A. Forster, Department of Biological Sciences, 2029 G St. NW, The George Washington, University, Washington, DC 20052, USA.

Email: [email protected]

Contribution: Conceptualization (equal), Formal analysis (lead), Funding acquisition (equal), ​Investigation (equal), Methodology (supporting), Project administration (equal), Supervision (lead), Visualization (supporting), Writing - original draft (lead), Writing - review & editing (lead)

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William J. de Klerk

William J. de Klerk

Department of Geology, Rhodes University, Makhanda, South Africa

Department of Earth Sciences, Albany Museum, Makhanda, South Africa

Contribution: Conceptualization (equal), Funding acquisition (equal), ​Investigation (equal), Project administration (equal), Writing - original draft (supporting)

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Karen E. Poole

Karen E. Poole

Department of Basic Sciences, New York Institute of Technology College of Osteopathic Medicine at Arkansas State University, Jonesboro, Arkansas, USA

Contribution: Formal analysis (equal), Visualization (lead), Writing - original draft (supporting)

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Anusuya Chinsamy-Turan

Anusuya Chinsamy-Turan

Zoology Department, University of Cape Town, Cape Town, South Africa

Earth Sciences Division, South African Museum, Cape Town, South Africa

Contribution: Formal analysis (lead), ​Investigation (equal), Methodology (equal), Visualization (supporting), Writing - original draft (supporting)

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Eric M. Roberts

Eric M. Roberts

School of Earth and Environmental Sciences, James Cook University, Townsville, Queensland, Australia

Contribution: Formal analysis (supporting), ​Investigation (lead), Visualization (supporting), Writing - original draft (supporting)

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Callum F. Ross

Callum F. Ross

Department of Organismal Biology, University of Chicago, Chicago, Illinois, USA

Contribution: Funding acquisition (equal), ​Investigation (equal), Project administration (equal), Writing - original draft (supporting)

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First published: 21 July 2022
Citations: 3

Abstract

We name and describe a new iguanodontian dinosaur from the Early Creteceous Kirkwood Formation, Eastern Cape Province, South Africa. This dinosaur is one of only two ornithopod dinosaurs known from the Cretaceous of southern Africa, and is unique in being represented primarily by hatchling to young juvenile individuals as demonstrated by bone histological analysis. All of the juvenile material of this new taxon comes from a single, laterally-restricted bonebed and specimens were primarily recovered as partial to complete single elements, although rare articulated materials and one partial skeleton were found. Sedimentology of the bonebed suggests that this horizon heralds a change in environment upsection to a drier and more seasonal climate. This accumulation of bones is interpreted as seasonal mortality from a nesting site or nesting grounds and may be linked to this environmental shift.