Jack Ashby on X: "Today's Close-Up Quiz was the horn-covered bony casque from the skull of a #cassowary: the giant flightless blue and red birds from Australia and New Guinea. The casque
![Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library](https://anatomypubs.onlinelibrary.wiley.com/cms/asset/10e24bf5-3b68-441a-8889-79894a356db2/ar24477-fig-0009-m.jpg)
Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library
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![Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library](https://anatomypubs.onlinelibrary.wiley.com/cms/asset/cf6aaa02-d538-4af7-81c2-434f2e3dc675/ar24477-fig-0008-m.jpg)
Osteological description of casque ontogeny in the southern cassowary (Casuarius casuarius) using micro‐CT imaging - Green - 2021 - The Anatomical Record - Wiley Online Library
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![The cranial casque of Corythoraptor jacobsi and recent cassowaries.... | Download Scientific Diagram The cranial casque of Corythoraptor jacobsi and recent cassowaries.... | Download Scientific Diagram](https://www.researchgate.net/publication/318726539/figure/fig2/AS:520951060066305@1501215819529/The-cranial-casque-of-Corythoraptor-jacobsi-and-recent-cassowaries-a-c-the-crested.png)
The cranial casque of Corythoraptor jacobsi and recent cassowaries.... | Download Scientific Diagram
![Male black hornbill skull,(Anthracoceros malayanus) showing the bone structure of the casque Stock Photo - Alamy Male black hornbill skull,(Anthracoceros malayanus) showing the bone structure of the casque Stock Photo - Alamy](https://l450v.alamy.com/450v/2badn00/male-black-hornbill-skullanthracoceros-malayanus-showing-the-bone-structure-of-the-casque-2badn00.jpg)
Male black hornbill skull,(Anthracoceros malayanus) showing the bone structure of the casque Stock Photo - Alamy
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