Palaeontologia Electronica palaeo-electronica.org Late Jurassic jaw bones of Halecomorph fish (Actinopterygii: Halecomorphi) studied with X-ray microcomputed tomography Błażej Błażejowski, Paul Lambers, Piotr Gieszcz, Daniel Tyborowski, and Marcin Binkowski ABSTRACT New finds of Halecomorphi fish remains from Late Jurassic limestones of Owadów-Brzezinki (Poland) are investigated using X-ray microcomputed tomography (XMT) revealing details of jaw bones for actinopterygian fish histology. Three-dimen- sional (3-D) reconstruction allows for correct taxonomical verification. The possibility of 3-D printing gives the opportunity for work with a model in any desired scale without risk of damaging the specimen. Błażej Błażejowski. Institute of Paleobiology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland.
[email protected] Paul Lambers. Universiteitsmuseum Utrecht, Lange Nieuwstraat 106, 3512 PN Utrecht, The Netherlands,
[email protected] Piotr Gieszcz. Independent Center for Advanced Research machinic.it, Stawki 4c/10, 00-193 Warszawa, Poland,
[email protected] Daniel Tyborowski. Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679 Warszawa, Poland,
[email protected] Marcin Binkowski. Department of Computer Science and Materials Science, University of Silesia, Katowice, Poland,
[email protected] Keywords: Halecomorph fish; Late Jurassic; X-ray microcomputed tomography (XMT) INTRODUCTION pterosaurs, ammonites, horseshoe crabs, decapod crustaceans and insects) were discovered (Błaże- This paper presents the recently discovered jowski, 2015; Kin and Błażejowski, 2012, 2014; jaw bones of halecomorph fish studied with X-ray Błażejowski et al., 2015). microcomputed tomography. The bones came from The most interesting feature of the Owadów- new paleontological site of the Sławno limestones Brzezinki quarry (Figure 2) is some similarity to the at the Owadów-Brzezinki quarry (Figure 1) about classic Solnhofen lithographic limestone (e.g., 19 km south-east of Tomaszów Mazowiecki (Cen- Munnecke et al., 2008).