Author: Agnieszka K.

The mode of locomotion of one of the earliest free-living stalked echinoderms – Ordovician Pleurocystites belonging to the subphylum Blastozoa – was reconstructed.

During the Miocene salinity crisis, changing environmental conditions, including a sharp reduction in water exchange between the Mediterranean and the Atlantic Ocean, changed the geographic ranges of many organisms.

Turtles have a characteristic limb bone microstructure: the poorly vascularized tissue grows slowly throughout most of their life; in addition, there is no medullary cavity.

The paper deals with the anatomy of limbs and associated skeletal structures in the Triassic (c.a. 215 Myr) turtles belonging to the genus Proterochersis known from the territory of modern-day Germany and Poland.

Foraminifera (unicellular protists) from the Marquesas Keys, located 30 km west of Key West (Florida) allowed to reconstruct climatic conditions…

Lorrainosaurus from the Bajocian (Middle Jurassic) of France is the earliest large-bodied pliosaurid and the oldest known representative of a dynasty of marine reptile mega-predators…

The paper presents the results of histological studies of teeth of Late Jurassic fish from Owadów-Brzezinki.

Biomineralization of fish otoliths is regulated by macromolecules, such as proteins, whose presence is crucial for the functionality and properties of these mineralized structures.

Capacity of physiological modifications of the chemistry of the coral calcifying fluid that contains the molecules necessary for the formation of the skeleton…

The territory of Poland is mostly covered by sediments of glacial origin, which cover the Mesozoic rocks.