Comparison of the teeth of Jurassic fish from Owadów-Brzezinki

The paper presents the results of histological studies of teeth of Late Jurassic fish from Owadów-Brzezinki. Through observation using optical and electron microscopy, it was shown that the examined tooth samples of holosteans (Strobilodus sp. belonging to the Amiiformes) and teleost-like fish (Orthocormus teyleri belonging to the Pachycormiformes, an extinct order) possess different internal structures. The observed microstructural and morphological features indicate that these similar-sized fish inhabited different ecological niches.

Figure: Dentary bone of actinopterygian fish Strobilodus sp. from Owadów-Brzezinki; reconstruction: Ola Hołda-Michalska & Marta Szubert.