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Morphology and evolutionary significance of phosphatic otoliths within the inner ears of cartilaginous fishes (Chondrichthyes). BMC Evolutionary Biology, 19(1), Article 238
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Kriwet, J. & Engelbrecht, A. & Mors, T. & Reguero, M.A. & Tambussi, C. & Stepanek, R. (2012)
First chimeroid, batoid and shark records (Chondrichthyes: Holocephali, Elasmobranchii) from the uppermost horizons (Late Eocene, Telms 6 and 7) of the La Meseta Formation, Seymour Island, Antarctica [Abstract]. Terra Nostra, 2012(3), 100

Stepanek, R. & Kriwet, J. (2012)
Contributions to the skeletal anatomy of freshwater stingrays (Chondrichthyes, Myliobatiformes): 1. Morphology of male Potamotrygon motoro from South America. Zoosystematics and Evolution, 88(2), 145–158
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Stepanek, R. & Kriwet, J. (2011)
A review of the evolution of potamotrygonid freshwater stingrays (Chondrichthyes, Myliobatiformes) [Abstract]. (Poster) In Programme Booklet of The 15th Annual Scientific Conference of the European Elasmobranch Association, Berlin, 29.10.–30.10.2011