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A New Early Pleistocene Species of Nothofagus and the Climatic Implications of Co-occurring Nothofagus Fossils

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Version 2 2023-06-23, 11:02
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journal contribution
posted on 2023-06-23, 11:02 authored by Gregory JordanGregory Jordan
A new species of Nothofagus, N. pachyphylla, is proposed based on fossils from Early Pleistocene sediments at Regatta Point, western Tasmania. This extinct species occurred for some time with its sister species, N. cunninghamii, which is still extant in Tasmania. The fossil leaves of N. cunninghamii in the Regatta Point sediments are all very small and are only consistent with leaves from cold climate extant populations of this species. The fossil leaves of other taxa in these sediments are also mostly at the small (and cool climate) end of the range of the leaves of their extant relatives. These data provide corroborating evidence for floristically based inferences of colder than modern palaeoclimates for this fossil site. The co-occurrence of small- and large-leaved sister species is paralleled in a number of modern Tasmanian rainforest genera.

History

Publication title

Australian Systematic Botany

Volume

12

Issue

6

Article number

6

Number

6

Pagination

757-765

Department/School

Biological Sciences

Publisher

CSIRO

Publication status

  • Published

Rights statement

The definitive version is available online at http://www.publish.csiro.au/nid/150.htm

Repository Status

  • Open

Socio-economic Objectives

280111 Expanding knowledge in the environmental sciences

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