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Australian dinosaur "stampede": identity of large track-maker



From: Ben Creisler
bcreisler@gmail.com


Following the recent paper disputing evidence for a "stampede" at the
Australian Lark Quarry site, another paper about the identity of
biggest track-maker:


Richard A. Thulborn (2013)
Lark Quarry revisited: a critique of methods used to identify a large
dinosaurian track-maker in the Winton Formation (Albian–Cenomanian),
western Queensland, Australia.
Alcheringa (advance online publication)
DOI:10.1080/03115518.2013.748482
http://www.tandfonline.com/doi/full/10.1080/03115518.2013.748482


A remarkable assemblage of dinosaur tracks in the Winton Formation
(Albian–Cenomanian) at Lark Quarry, a site in western Queensland,
Australia, has long been regarded as evidence of a dinosaurian
stampede. However, one recently published study has claimed that
existing interpretation of Lark Quarry is incorrect because the
largest track-maker at the site was misidentified and could not have
played a pivotal role in precipitating a stampede. That recent study
has identified the largest track-maker as an ornithopod (bipedal
plant-eating dinosaur) similar or identical to Muttaburrasaurus and
not, as formerly supposed, a theropod (predaceous dinosaur) resembling
Allosaurus. Those iconoclastic claims are examined here and are shown
to be groundless: they are based partly on misconceptions and partly
on fabricated data that have been assessed uncritically using
quantitative measures of questionable significance. Such ill-founded
claims do not reveal any substantial flaw in the existing
interpretation of the Lark Quarry dinosaur tracks.