Biology:Pallaviciniites
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Short description: Species of liverwort
| Pallaviciniites | |
|---|---|
Scientific classification 
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| Kingdom: | Plantae |
| Division: | Marchantiophyta |
| Class: | Jungermanniopsida |
| Order: | Metzgeriales |
| Genus: | †Pallaviciniites Schuster 1966 (Hueber, 1961) |
| Species: | †P. devonicus
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| Binomial name | |
| †Pallaviciniites devonicus Schuster 1966 (Hueber, 1961)
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| Synonyms | |
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The lowermost Upper Devonian fossil Pallaviciniites was for a time the oldest known liverwort until Metzgeriothallus was recovered from earlier Devonian strata.[2]
It had a central axis, and bifurcated at its tips; similar fossils have been found in younger strata through to the Pleistocene.[3] With the exception of its elongated axial conducting (non-vascular) cells, the thallus was a single cell thick.[4] It had a serrated margin.[1]
Prior to its discovery, the oldest known liverworts dated to the Lower Carboniferous.[3]
References
- ↑ 1.0 1.1 Hueber, F. M. (1961). "Hepaticites devonicus, a New Fossil Liverwort from the Devonian of New York". Annals of the Missouri Botanical Garden 48 (2): 125–131. doi:10.2307/2394879.
- ↑ Hernick, L.; Landing, E.; Bartowski, K. (2008). "Earth's oldest liverworts—Metzgeriothallus sharonae sp. Nov. From the Middle Devonian (Givetian) of eastern New York, USA". Review of Palaeobotany and Palynology 148 (2–4): 154–162. doi:10.1016/j.revpalbo.2007.09.002.
- ↑ 3.0 3.1 Chopra, R. N (1998). Topics in bryology. ISBN 978-81-7023-811-9. https://books.google.com/books?id=jEtVg4jTmq0C&q=Pallaviciniites&pg=PA1.
- ↑ Banks, H. (1975). "The oldest vascular land plants: A note of caution". Review of Palaeobotany and Palynology 20 (1–2): 13–69. doi:10.1016/0034-6667(75)90004-4.
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