A revision of the trilobites of the Třenice and Mílina Formations (Upper Tremadocian) confirms the presence of 29 species. Celdometopus gen. n. is established, and six new species, Agerina clymene, Hemibarrandia klouceki, Holoubkocheilus asopus, Parabathycheilus krafti, Platypeltis perseis, and…

For the purpose of the present study, algae were investigated in two eutrophic lakes, two peat bogs, three different waterfalls, four different springs, a brackish lake, three types of wastewater, four types of aerial habitat, and the flysch river of Dragonja, all in Slovenia. The study was carried…

The Middle Ordovician Pygmaeoconus porrectus (BARRANDE in PERNER, 1903) is described as the first known molluscan obligatory epibiont on hyolithids. Its biology is similar to that of the coral Hyostragulum and some trepostome bryozoans described by Galle and Parsley (2005). The antero-posterior axis…