Phyllotheca douroensis sp. nov., a new equisetalean fossil-species from the Douro Carboniferous Basin (Upper Pennsylvanian; NW Portugal): palaeobiogeographical, systematic and evolutionary implications. Biosis:Biol. Syst. [Internet]. 2022 Mar. 23 [cited 2024 Nov. 24];3(1):e001. Available from: https://eaapublishing.org/journals/index.php/biosis/article/view/162