Siluri-vanuselised vetikafossiilid Kalana Lagerstätte’s (Silur, Aeroni)

Abstract

Kalana Lagerstätte (Aeroni, Silur) Kesk-Eestis on päevavalgele toonud rikkaliku ja mitmekesise lubistumata vetikafloora. Varem on sealt kirjeldatud kaks uut vetikaliiki: Kalania pusilla (Tinn, Mastik, Ainsaar et Meidla, 2015) ja Palaeocymopolia silurica (Mastik & Tinn, 2015). Lisaks on Eestis kinnitust leidnud Leveilleites hartnageli leidumine (Foerste, 1923), mis oli algselt dokumenteeritud vaid Laurentia Hilis-Ordoviitsiumist. Selles uuringus kirjeldati veel 2 lubistumata vetikate morfotüüpi. Morfotüüp A määrati seltsi Bryopsidales Schaffner, 1922 ja morfotüüp B seltsi Dasycladales Pascher, 1931. Nende morfogrupp vastab Ordoviitsiumi floorale.

Kalana Lagerstätte algal flora from the Silurian (Aeronian) The Kalana Lagerstätte (Aeronian, Silurian) in Central Estonia has revealed a rich and diverse flora of non-calcified algae. Previously has been deascribed two new algal species: Kalania pusilla (Tinn, Mastik, Ainsaar et Meidla, 2015) and Palaeocymopolia silurica (Mastik & Tinn, 2015). Furthermore, the presence of Leveilleites hartnageli (Foerste, 1923), which was originally documented from the Late Ordovician of Laurentia, has been confirmed in Estonia. This study has erected 2 more non-calcified algae morphotypes. Morphotype A was assigned to Order Bryopsidales Schaffner, 1922 and morphotype B to Order Dasycladales Pascher, 1931. Their morphogroup is relavant to Ordovician flora.