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Ichno Publications

Publication list

on . Posted in Ichno Publications

Below is a more-or-less up to date publication list for the group.

If you would like to request a .pdf copy of the work for your own research or teaching then please use the mail-to link at the end of the reference and the appropriate author will send you a copy as soon as possible.




        • Stukins, S., Jolley, D.W., McIlroy, D., Hartley, A.J. Middle Jurassic vegetation dynamics from allochthonous palynological assemblages: An example from a marginal marine depositional setting; Lajas Formation, Neuquén Basin, Argentina (accepted)
        • Harazim, D., Callow, R., Mcilroy, D. Microbial mats implicated in the generation of intrastratal shrinkage (‘synaeresis’) cracks.
        • Needham, S.J., Worden, R. H., McIlroy, D., Needham 2004 Biogeosciences worm-sediment interaction (dataset).
        • Herringshaw, L.G., Mcilroy, D. Bioinfiltration: Irrigation-Driven Transport of Clay Particles Through Bioturbated Sediments (accepted).
        • Brasier, M.D., Liu, A., Menon, L., Matthews, J.J., Mcilroy, D., Wacey D. Explaining the exceptional preservation of Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland: A hydraulic model (accepted).
        • McILroy, D., Evidence for Cnidarian-like behaviour in ca 560Ma Ediacaran Aspidella (accepted).
        • Brasier, M.D., McIlroy, D., Liu A., Antcliffe, J.B., Menon, L.R. The oldest evidence of bioturbation on Earth. (accepted).
        • Callow, R., Brasier, M.D., McIlroy, D., Discussion: ''Were the Ediacaran siliciclastics of South Australia coastal or deep marine?'' (accepted).
        • Callow, R., McIlroy, D., Kneller, B., Dykstra, M. Ichnology of Late Cretaceous Turbidites from the Rosario Formation, Baja California, Mexico. (accepted).

The sad story of a largely forgotten pioneer of ichnology and Precambrian Palaeontology

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As part of my Ph.D. studies I had the pleasure of working on the Ediacaran  Lonymyndian Successions of the Welsh Borderlands, eventually crossing paths with the wonderful Pete Crimes, who ended up being the external examiner of my thesis and then a great friend.  Pete and I published (with one of his former students J. Pauley) on a number of peculiar structures that we collectively called "blobs", but which included morphologies like "donuts", "cherry buns" and "blobs" of various sizes, and the Precambrian pseudofossil Arumberia.

McIlroy, D., Crimes, T. P., and Pauley, J. C. 2005. Fossils and matgrounds from the Neoproterozoic Longmyndian Supergroup, Shropshire, UK. Geological Magazine, 142: 441–455.

Read more: The sad story of a largely forgotten pioneer of ichnology and Precambrian Palaeontology

I thought that that would be the end of the matter. I knew that the sedimentology could use a modern sequence stratigraphic approach, but my move to Canada seemed to put an end to my Longmyndian interest.  That is until Rich Callow (a student of my Ph.D. supervisor Martin Brasier and currently a postdoc with me here at MUN) discovered microbial filaments in the same successions.

Callow, R. H. T. and Brasier, M. D. 2009. A solution to Darwin’s dilemma of 1859: Exceptional preservation in Salter’s material from the late Ediacaran Longmyndian Supergroup, England. Journal of the Geological Society, London, 166: 1–4.


Mouldy Pizzas

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Mistaken brasier 067

Some 6 years ago now I visited Mistaken Point, one of the most important Ediacaran localities in the world, which sits right at the bottom of the Avalon Peninsula, a couple of hours drive from St. John's.  I was amazed and intrigued by the large and abundant fossils colloquially known as Pizza Disks which do indeed look a little like overloaded 12" deep crust pizzas.

Such structures have long been compared to forms that have been named in the equivalent rocks in the UK (The UK and Eastern Newfoundland once sat on the same terrane known as Avalonia).  These obscure and enigmatic fossils have very little internal detail.  I first came across such forms in the Charnian of Leicestershire, UK as part of my thesis and had never been convinced of them as body fossils, preferring a microbial interpretation for Ivesheadia Blackbrookia and Shepsheadia )

Petrophysical changes associated with bioturbation

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nikki aapg

Nikki has just had her first "first author" paper published.  This is a piece of collaborative work that goes back to the days when Rudi Meyer was with us (now at Calgary), and constitutes Allison Moore-Turpin's first paper as well!


Tonkin, N.S., McIlroy, D., Meyer, R. & Moore-Turpin, A. 2010. Bioturbation influence on reservoir quality: A case study from the Cretaceous Ben Nevis Formation, Jeanne d'Arc Basin, offshore Newfoundland, Canada. AAPG Bulletin, 94, 1059-1078.