[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: [dinosaur] Akainacephalus, new ankylosaurid from Late Cretaceous Kaiparowits Formation in Utah (free pdf)



News items:

Newly discovered armored dinosaur from Utah reveals intriguing family history
(with videos)

https://phys.org/news/2018-07-newly-armored-dinosaur-utah-reveals.html

==

A new ankylosaur found in Utah had a surprisingly bumpy head

https://www.sciencenews.org/article/new-ankylosaur-found-utah-had-surprisingly-bumpy-head


https://www.livescience.com/63104-photos-spiky-headed-ankylosaur.html

https://gizmodo.com/look-at-this-incredible-new-armored-dinosaur-found-in-u-1827720161

https://www.express.co.uk/news/world/991274/dinosaur-discovery-use-utah-ankylosaurids-asia-latest

=====


Videos:


Akainacephalus johnsoni (full video, no music)

https://www.youtube.com/watch?v=lMZr86RNhNU

***

https://www.youtube.com/watch?v=4D-gBKqBLsY

Assembling Akainacephalus johnsoni Mount Installation at the Natural History Museum of Utah

https://www.youtube.com/watch?v=T9oGn4vFtDw

***

Akainacephalus johnsoni: A Day in The Field

https://www.youtube.com/watch?v=T9oGn4vFtDw

***

Akainacephalus johnsoni: The Discovery Site

https://www.youtube.com/watch?v=Onb3XJRZKkE

***
Akainacephalus johnsoni: What Makes Akainacephalus Unique

https://www.youtube.com/watch?v=haOtyc_1Ayk

***

Akainacephalus johnsoni: Akainacephalus's Asian Descendants

https://www.youtube.com/watch?v=gYckI9Vetrg

***
Akainacephalus johnsoni: Naming a New Species

https://www.youtube.com/watch?v=WEd5X-CyHWo

****

Akainacephalus johnsoni: Preparing a Fossil

https://www.youtube.com/watch?v=pZF9sAmB3IA


==========
New Species of Dinosaur Named After (A Different) Randy Johnson

https://www.kgw.com/video/entertainment/buzz60/new-species-of-dinosaur-named-after-a-different-randy-johnson/600-8194144

===


On Thu, Jul 19, 2018 at 8:23 AM, Ben Creisler <bcreisler@gmail.com> wrote:



Ben Creisler
bcreisler@gmail.com


A new paper in open access:



Akainacephalus johnsoni, gen. et sp. nov.Â


Jelle P. Wiersmaâ & Randall B. Irmis (2018)
A new southern Laramidian ankylosaurid, Akainacephalus johnsoni gen. et sp. nov., from the upper Campanian Kaiparowits Formation of southern Utah, USA.Â
PeerJ 6:e5016Â




A partial ankylosaurid skeleton from the upper Campanian Kaiparowits Formation of southern Utah is recognized as a new taxon, Akainacephalus johnsoni, gen. et sp. nov. The new taxon documents the first record of an associated ankylosaurid skull and postcranial skeleton from the Kaiparowits Formation. Preserved material includes a complete skull, much of the vertebral column, including a complete tail club, a nearly complete synsacrum, several fore- and hind limb elements, and a suite of postcranial osteoderms, making Akainacephalus johnsoni the most complete ankylosaurid from the Late Cretaceous of southern Laramidia. Arrangement and morphology of cranial ornamentation in Akainacephalus johnsoni is strikingly similar to Nodocephalosaurus kirtlandensis and some Asian ankylosaurids (e.g., Saichania chulsanensis, Pinacosaurus grangeri, and Minotaurasaurus ramachandrani); the cranium is densely ornamented with symmetrically arranged and distinctly raised ossified caputegulae which are predominantly distributed across the dorsal and dorsolateral regions of the nasals, frontals, and orbitals. Cranial caputegulae display smooth surface textures with minor pitting and possess a distinct conical to pyramidal morphology which terminates in a sharp apex. Character analysis suggests a close phylogenetic relationship with N. kirtlandensis, M. ramachandrani, Tarchia teresae, and S. chulsanensis, rather than with Late Cretaceous northern Laramidian ankylosaurids (e.g., Euoplocephalus tutus, Anodontosaurus lambei, and Ankylosaurus magniventris). These new data are consistent with evidence for distinct northern and southern biogeographic provinces in Laramidia during the late Campanian. The addition of this new ankylosaurid taxon from southern Utah enhances our understanding of ankylosaurid diversity and evolutionary relationships. Potential implications for the geographical distribution of Late Cretaceous ankylosaurid dinosaurs throughout the Western Interior suggest multiple time-transgressive biogeographic dispersal events from Asia into Laramidia.

====