| 词条 | Pallaviciniites |
| 释义 |
| fossil_range = Frasnian | parent_authority = Schuster 1966 (Hueber, 1961) | genus = Pallaviciniites | species = devonicus | authority = Schuster 1966 (Hueber, 1961) | synonyms = {{species list | Hepaticites | Hueber 1961[1]}} }} The lowermost Upper Devonian fossil Pallaviciniites was for a time the oldest known liverwort until Metzgeriothallus was recovered from earlier Devonian strata.[1] It had a central axis, and bifurcated at its tips; similar fossils have been found in younger strata through to the Pleistocene.[2] With the exception of its elongated axial conducting (non-vascular) cells, the thallus was a single cell thick.[3] It had a serrated margin.[4] Prior to its discovery, the oldest known liverworts dated to the Lower Carboniferous.[2] References1. ^{{Cite journal | last1 = Hernick | first1 = L. | last2 = Landing | first2 = E. | last3 = Bartowski | first3 = K. | title = Earth's oldest liverworts—Metzgeriothallus sharonae sp. Nov. From the Middle Devonian (Givetian) of eastern New York, USA | journal = Review of Palaeobotany and Palynology | volume = 148 | pages = 154 | year = 2008 | doi = 10.1016/j.revpalbo.2007.09.002 }} 2. ^1 {{cite book | url = https://books.google.com/books?id=jEtVg4jTmq0C&pg=PA1#v=onepage&q=Pallaviciniites&f=false | title = Topics in bryology | isbn = 978-81-7023-811-9 | author1 = Chopra, R. N | year = 1998}} 3. ^{{Cite journal | last1 = Banks | first1 = H. | title = The oldest vascular land plants: A note of caution | journal = Review of Palaeobotany and Palynology | volume = 20 | pages = 13–69 | year = 1975 | doi = 10.1016/0034-6667(75)90004-4 }} 4. ^1 {{Cite journal | last1 = Hueber | first1 = F. M. | title = Hepaticites devonicus, a New Fossil Liverwort from the Devonian of New York | jstor = 2394879 | journal = Annals of the Missouri Botanical Garden | volume = 48 | issue = 2 | pages = 125–131 | year = 1961 | doi = 10.2307/2394879}} 3 : Metzgeriales|Late Devonian plants|Frasnian life |
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