“Meyer Desert Formation biota”的意思、由来-开放百科全书

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Meyer Desert Formation biota

释义

References
External links

The Meyer Desert Formation biota is a biota (flora and fauna) found in the Dominion Range in the Transantarctic Mountains in Antarctica, alongside the Beardmore Glacier.

Since about 15 Ma, Antarctica has been mostly covered with ice.^[1]

Fossil Nothofagus leaves in the Meyer Desert Formation of the Sirius Group show that intermittent warm periods allowed Nothofagus shrubs to cling to the Dominion Range as late as 3–4 Ma (mid-late Pliocene).^[2] After that the Pleistocene ice-age covered the whole continent and destroyed all major plant life on it.^[3]

Species reported by Ashworth and Cantrill from about 3 million years ago include:

Animals:

Pisidium species (very small or minute freshwater clams, Sphaeriidae)
A lymnaeid gastropod (air-breathing freshwater snails)
2 species of curculionid beetles (weevils)
A cyclorrhaphid fly (Diptera)

Plants:

Nothofagus beardmorensis (Fagales)
Ranunculus or similar achenes (Ranunculaceae?)
Mosses (apparently 5 types)
Pollen, mostly Nothofagus
Coniferous bisaccate pollen grains, perhaps Podocarpidites
Pollen of the pollen genus Tricolpites
Flowering cushion plants
A seed of Hippuris (mare's tails: Plantaginaceae)
A seed of Cyperaceae (sedges)
3 or more types of liverworts

References

1. ^{{cite book|editor-last=Trewby|editor-first=Mary|date=September 2002|title=Antarctica: An Encyclopedia from Abbott Ice Shelf to Zooplankton|publisher=Firefly Books|isbn=1-55297-590-8 }}
2. ^{{cite journal | title=New grounds for reassessing palaeoclimate of the Sirius Group |year=2001 |journal=Journal of the Geological Society, London |volume=158|pages=925–35 | doi=10.1144/0016-764901-030 | last1=Retallack | first1=G. J. | last2=Krull | first2=E. S. | last3=Bockheim | first3=J. G. | issue=6}}
3. ^{{cite news|url=https://www.questia.com/read/1G1-4164401 |author= Stefi Weisburd |title=A forest grows in Antarctica. (an extensive forest may have flourished about 3 million years ago) |publisher=Science News |date=March 1986 |accessdate= 2012-11-02}}

External links

Fossil weevils (Coleoptera: Curculionidae) from latitude 85 S Antarctica
Cenozoic terrestrial palynological assemblages in the glacial erratics from the Grove Mountains, east Antarctica
Neogene vegetation of the Meyer Desert Formation (Sirius Group), Transantarctic Mountains, Antarctica, by Allan C. Ashworth and David J. Cantrill
[https://www.questia.com/read/1G1-4164401 A Forest Grows in Antarctica]
H.M. Li and Z.K. Zhou (2007) Fossil nothofagaceous leaves from the Eocene of western Antarctica and their bearing on the origin, dispersal and systematics of Nothofagus. Science in China. 50(10): 1525-1535.
and New grounds for reassessing palaeoclimate of the Sirius Group, Antarctica, G. J. Retallack, E. S. Krull and J. G. Bockheim:: full abstract, and passworded links to full article.

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