Roland Sookias

I am currently undertaking a PhD with the Archosauromorph Research Group investigating morphological disparity, taxonomic diversity, body size and other aspects of the evolutionary dynamics of early archosauromorphs. I am also involved in reassessing the monophyly, anatomy and distribution of the early archosauromorph group 'Euparkeriidae', with a current focus on Euparkeria capensis.

See current group webpage here.


Email: sookias.r.b[at]

Postal address:
School of Geography, Earth and Environmental Sciences
University of Birmingham
Edgbaston, Birmingham, B15 2TT

Office telephone: +441214146152

Mobile telephone: please email for number.

CV: please get in touch.


Sookias R. B., Sullivan, C., Liu, J. & Butler, R. J. 2014. Systematics of putative euparkeriids (Diapsida: Archosauriformes) from the Triassic of China. PeerJ. Open access.

Sookias RB, Böhmer C, Clack JA. 2014. Redescription and phylogenetic analysis of an enigmatic Pennsylvanian (Late Carboniferous) tetrapod from Nova Scotia, and the lability of Meckelian jaw ossification. PLoS ONE. Open access.

Sookias RB, Sennikov AG, Gower, DJ, Butler RJ. (published online). The monophyly of Euparkeriidae (Reptilia: Archosauriformes) and the origins of crown Archosauria: a revision of Dorosuchus neoetus from the Middle Triassic of Russia. Palaeontology. Main text (pdf).

Butler RJ, Sullivan C, Ezcurra MD, Liu J, Lecuona A, Sookias RB. 2014. New clade of enigmatic early archosaurs yields insights into early pseudosuchian phylogeny and the biogeography of the archosaur radiation. BMC Evolutionary Biology 14:128. Open access.

Sookias RB, Budd GE, Kear BP. 2013. Mesozoic fossil sustainability: synoptic case studies of resource management. GFF 135:131-143. Main text (pdf), Supplement (xls).

Sookias RB, Butler RJ. 2013. Euparkeriidae. In: Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin, Nesbitt, S. J., Desojo, J. B. & Irmis, R. B. (eds). Geological Society, London, Special Publications 379:35-48. Main text (pdf).

Sookias RB, Benson RBJ, Butler RJ. 2012. Biology, not environment, drives major patterns in maximum tetrapod body size through time. Biology Letters 8:674-677. Main text (pdf), Supplement 1 (doc), Supplement 2 (xls).

Sookias RB, Butler RJ, Benson RBJ. 2012. Rise of dinosaurs reveals major body size transitions are driven by passive processes of trait evolution. Proceedings of the Royal Society B 279:2180-2187. Main text (pdf), Supplement 1 (pdf), Supplement 2 (xls).