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Extinct genus of ferns From Wikipedia, the free encyclopedia
Pseudobornia is a genus of plants known only from fossils found from the Upper Devonian.[1] It contains a single species Pseudobornia ursina, and is the earliest fossil assigned with certainty to the Equisetopsida.
Pseudobornia Temporal range: | |
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Pseudobornia ursina | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Subclass: | Equisetidae |
Order: | †Pseudoborniales |
Genus: | †Pseudobornia Nathorst. |
Species: | †P. ursina |
Binomial name | |
†Pseudobornia ursina Nathorst. | |
The first fossils of Pseudobornia were collected by Johan Gunnar Andersson on Bear Island in the 1890s.[2] Hans-Joachim Schweitzer, a paleobotanist, was the first to interpret the fossils as belonging to a large tree, based on additional fossils discovered in Alaska in the 1960s.[3][4]
The probable relationships within Equisetidae are shown in the cladogram below. The position where Ibyka would be has been added.[5]