ammonites
Johnsonia Korde 1965 (green alga)

Dasycladophyceae - Dasycladales - Dasycladaceae

Full reference: K. B. Korde. 1965. Algae descriptions, in The Development and Change of Marine Organisms at the Palaeozoic-Mesozoic Boundary. Trudy Paleontologicheskogo Instituta 108:268-284

Parent taxon: Dasycladaceae according to K. B. Korde 1965

Sister taxa: Aciculella, Atractyliopsis, Baratoloporella, Conipora, Cyclocriniteae, Cylindroporella, Cymopolia, Endoina, Favoporella, Heteroporella, Imperiella, Jodotella, Macroporella, Mizzia, Nanjinoporella, Nanopora, Neomeris, Neoteutloporella, Palaeodasycladus, Physoporella, Poikiloporella, Pseudogyroporella, Pseudotabasoporella, Pseudovermiporella, Salopekiella, Salpingoporella, Stichoporella, Tabasoporella, Zittelina

Subtaxa: Johnsonia spinosa

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Type: Johnsonia spinosa

Ecology: stationary epifaunal "photoautotroph"