The finding of fossil freshwater diatoms in late Cretaceous chert in Mexico suggests – together
with all the discoveries of fossil freshwater diatoms known from positions older than the Cretaceous – that the
extinct marine Cretaceous diatom taxa cannot be considered to be the oldest.
We process personal data collected when visiting the website. The function of obtaining information about users and their behavior is carried out by voluntarily entered information in forms and saving cookies in end devices. Data, including cookies, are used to provide services, improve the user experience and to analyze the traffic in accordance with the Privacy policy. Data are also collected and processed by Google Analytics tool (more).
You can change cookies settings in your browser. Restricted use of cookies in the browser configuration may affect some functionalities of the website.