| Pallaviciniites Temporal range: Frasnian PreꞒ Ꞓ O S D C P T J K Pg N | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Division: | Marchantiophyta |
| Class: | Jungermanniopsida |
| Order: | Metzgeriales |
| Genus: | †Pallaviciniites Schuster 1966 (Hueber, 1961) |
| Species: | †P. devonicus |
| Binomial name | |
| †Pallaviciniites devonicus Schuster 1966 (Hueber, 1961) | |
| Synonyms | |
| |
The lowermost Upper Devonian fossil Pallaviciniites was for a time the oldest known liverwort until Metzgeriothallus was recovered from earlier Devonian strata.
It had a central axis, and bifurcated at its tips; similar fossils have been found in younger strata through to the Pleistocene. With the exception of its elongated axial conducting (non-vascular) cells, the thallus was a single cell thick. It had a serrated margin.
Prior to its discovery, the oldest known liverworts dated to the Lower Carboniferous.
References
- ^ 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. JSTOR 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. Bibcode:2008RPaPa.148..154H. doi:10.1016/j.revpalbo.2007.09.002.
- ^ Chopra, R. N (1998). Topics in bryology. Allied Publishers. ISBN 978-81-7023-811-9.
- Banks, H. (1975). "The oldest vascular land plants: A note of caution". Review of Palaeobotany and Palynology. 20 (1–2): 13–69. Bibcode:1975RPaPa..20...13B. doi:10.1016/0034-6667(75)90004-4.
| Taxon identifiers | |
|---|---|
| Pallaviciniites devonicus | |
| Pallaviciniites | |
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