My Scientific Research & Contact

Piotr Bajdek (, Research Gate Profile, Google Scholar Profile


Please, don’t hesitate to contact me if you have any comments on my blog or my research, questions, offer of collaboration, or you simply want to say “hello”. ­čÖé

I’m an independent researcher living in Poland. I’m interested in paleobiology and particularly in paleoecology and evolutionary physiology. My research focuses mostly on coprolites (i.e. fossil feces) and other trace fossils that represent food items that have entered the gastrointestinal tract, such as gut contents and regurgitalites:

ÔÇô as a source of paleoecologic information, including diet (predatorÔÇöprey interactions, carrion feeding, herbivory) and other life habits of animals [1,2,3,5,6,8], paleoenvironmental reconstruction [e.g. 2,4,5,6], and other ecologic relationships like parasitism and coprophagy [3,8]

ÔÇô as a source of information about the digestive physiology of extinct animals [2,3,6,1′] and their thermal physiologic evolution [e.g. 3,1′]

ÔÇô taphonomy and fossilization of feces [1,2,3,4,5,6,8], identification of coprolites [e.g. 1,2,5,6] and their utility in geology [e.g. 1,2,4,8]

I also make research on stromatolites [7] and microorganisms [3,7] exploring their significance for our understanding of ancient ecosystems. I am moreover interested in the origin of birds [1′,2′] and also in the mass extinctions [4,3′].

I have worked on fossil material from the Permian [3,4,6,8], Triassic [2,4,5,7], and Cretaceous [1] of Poland [1,2,7], Russia [3,4,8], Australia [5], Uruguay [6], and Brazil [6].

My peer-reviewed journal publications:

8. Bajdek, P., Owocki, K., Sennikov, A.G., Golubev, V.K., and Nied┼║wiedzki, G. 2017. Residues from the Upper Permian carnivore coprolites from Vyazniki in Russia – key questions in reconstruction of feeding habits. Palaeogeography, Palaeoclimatology, Palaeoecology┬á482: 70ÔÇô82. doi: 10.1016/j.palaeo.2017.05.033

7. Ta┼éanda, M., Bajdek, P., Nied┼║wiedzki, G., and Sulej, T. 2017. Upper Triassic freshwater oncoids from Silesia (southern Poland) and their microfossil biota. Neues Jahrbuch f├╝r Geologie und Pal├Ąontologie 284 (1): 43ÔÇô56. doi: 10.1127/njgpa/2017/0649

6. Silva, R.R., Ferigolo, J., Bajdek, P., and Pi├▒eiro, G. 2017. The feeding habits of Mesosauridae. Frontiers in Earth Science 5:23. doi: 10.3389/feart.2017.00023

5. Nied┼║wiedzki, G., Bajdek, P., Owocki, K., and Kear, B.P. 2016. An Early Triassic polar predator ecosystem revealed by vertebrate coprolites from the Bulgo Sandstone (Sydney Basin) of southeastern Australia. Palaeogeography, Palaeoclimatology, Palaeoecology 464: 5ÔÇô15. doi: 10.1016/j.palaeo.2016.04.003

4. Nied┼║wiedzki, G., Bajdek, P., Qvarnstr├Âm, M., Sulej, T., Sennikov, A.G., and Golubev, V.K. 2016. Reduction of vertebrate coprolite diversity associated with the end-Permian extinction event in Vyazniki region, European Russia. Palaeogeography, Palaeoclimatology, Palaeoecology 450: 77ÔÇô90. doi: 10.1016/j.palaeo.2016.02.057

3. Bajdek, P., Qvarnstr├Âm, M., Owocki, K., Sulej, T., Sennikov, A.G., Golubev, V.K., and Nied┼║wiedzki, G. 2016. Microbiota and food residues including possible evidence of pre-mammalian hair in Upper Permian coprolites from Russia. Lethaia 49: 455ÔÇô477. doi: 10.1111/let.12156

2. Bajdek, P., Owocki, K., and┬áNied┼║wiedzki, G. 2014. Putative dicynodont coprolites from the Upper Triassic of Poland. Palaeogeography, Palaeoclimatology, Palaeoecology 411: 1ÔÇô17. doi: 10.1016/j.palaeo.2014.06.013

1. Bajdek, P. 2013. Coprolite of a durophagous carnivore from the Upper Cretaceous Godula Beds, Outer Western Carpathians, Poland. Geological Quarterly 57 (2): 361ÔÇô364. doi: 10.7306/gq.1094

My preprints:

3′. Bajdek, P., 2019. Speciation rates of subviral pathogens of angiosperms abruptly decreased at the CretaceousÔÇôPaleogene boundary. PeerJ Preprints 7: e27469v1 doi: 10.7287/peerj.preprints.27469v1

2′. Bajdek, P. and Sulej, T.┬á2018.┬áHypothesis: Avian flight originated in arboreal archosaurs gliding on membranous wings.┬áPeerJ Preprints┬á6:┬áe27213v2 doi:┬á10.7287/peerj.preprints.27213v2

1′. Bajdek, P. 2018. Comparative digestive physiology of archosaurs with notes on bird origins.┬áPeerJ Preprints┬á6: e26902v2 doi: 10.7287/peerj.preprints.26902v2

Awards and achievements:

2018, Member of the scientific committee of the 1st Palaeontological Virtual Congress [certificate]

2017, Palaeogeography, Palaeoclimatology, Palaeoecology: awarded as ‘Outstanding Reviewer’ for being within the top 10th┬ápercentile of reviewers for the Journal, in terms of the number of manuscripts reviewed in the last two years [certificate]

2016, National Geographic Traveler, Polish Ed.: nominated in the ‘Scientific Achievement of the Year’ category for the discovery of ÔÇťthe oldest hairÔÇŁ from the Permian Period, together with G. Nied┼║wiedzki