Pallaviciniites

<i>Pallaviciniites</i>

Pallaviciniites

Species of liverwort

Quick Facts Scientific classification, Binomial name ...

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. [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. JSTOR 2394879.
  2. [2]
    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.
  3. [3]
    Chopra, R. N (1998). Topics in bryology. Allied Publishers. ISBN 978-81-7023-811-9.
  4. [4]
    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.


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