Major deglaciation of east Antarctica during the early Late Pliocene? Not likely from a marine perspective

1996 ◽  
Vol 27 (1-4) ◽  
pp. 237-251 ◽  
Author(s):  
Detlef A. Warnke ◽  
Bonnie Marzo ◽  
David A. Hodell
1993 ◽  
Vol 5 (4) ◽  
pp. 409-410 ◽  
Author(s):  
J. A. Webb ◽  
C. R. Fielding

The East Antarctic Craton contains only one substantial outcrop of Palaeozoic–Mesozoic strata between 0° and 150°E; this lies in Mac. Robertson Land, on the eastern margin of the northern Prince Charles Mountains. These rocks are known as the Amery Group (Mond 1972, McKelvey & Stephenson 1990) and comprise dominantly fluviatile sandstones, with subordinate shales, coals and conglomerates. The lower formations of the Amery Group, the Radok Conglomerate and Bainmedart Coal Measures, contain a diverse Stage 5 palynomorph assemblage indicating a Baigendzhinian–Tatarian age (late Early–Late Permian, hereafter abbreviated as mid–Late Permian; Dibner 1978).


1998 ◽  
Vol 10 (2) ◽  
pp. 161-170 ◽  
Author(s):  
H.A. Jonkers

Antarctic late Cenozoic pectinid-bearing sedimentary strata are chiefly confined to localities in the northern part of the Antarctic Peninsula, in the McMurdo Sound area, and Marine Plain, East Antarctica. Ages of these deposits range from Oligocene to Holocene. Chlamys-like scallops, which are absent from today's Southern Ocean, thrived in Antarctic waters during both glacial and interglacial episodes, but disappeared during the Late Pliocene. Their extinction is believed to result from the combined effects of increased carbonate solubility, habitat loss and limitations in food availability, associated with major cooling.


2013 ◽  
Vol 92 (2-3) ◽  
pp. 171-176 ◽  
Author(s):  
F.P. Wesselingh ◽  
W.J.M. Peters ◽  
D.K. Munsterman

AbstractA sea-floor assemblage from hardened sandstone boulders in which lingulid brachiopods predominate is recorded from the Oosterhout Formation near Balgoy (province of Gelderland, the Netherlands). Dinoflagellate cysts indicate a late Early-Late Pliocene (late Zanclean-Piacenzian) age of these boulders; the entire assemblage is indicative of clear marine waters near storm wave base along the southeastern margin of the North Sea Basin at the time. A possible commensal relationship between the lingulid brachiopods and the gastropod Calyptraea chinensis is implied.


2002 ◽  
Vol 14 (1) ◽  
pp. 69-73 ◽  
Author(s):  
J.D. Stilwell ◽  
D.M. Harwood ◽  
J.M. Whitehead

Macrofossils discovered in the Battye Glacier Formation (Pagodroma Group) of the Prince Charles Mountains, East Antarctica, provide important insight into marine life of the mid-Tertiary, rarely preserved elsewhere on the continent. Recorded are five species of macroinvertebrates; these are Adamussium n. sp.? cf. colbecki (Smith, 1902) (Bivalvia), Laternula? sp. (Laternulidae), Mytilidae genus and species indeterminate (Bivalvia), Bivalvia genus and species indeterminate, and Polychaeta genus and species indeterminate. Based on stratigraphical data and faunal composition, the clasts are dated as no younger than Early Miocene. This is one of the oldest reports of Adamussium from Antarctica, previously known from the Late Pliocene to Recent with a possible record in the Late Oligocene–Early Miocene. Palaeoecological data and facies analysis indicate that these taxa inhabited a shallow- to mid-shelf marine environment of normal salinity that was oligotrophic. The substrate was a soft, pebbly and sandy bottom that was sufficiently mobile to sponsor deep burrowing forms.


Geobios ◽  
2010 ◽  
Vol 43 (2) ◽  
pp. 241-251 ◽  
Author(s):  
Olga Otero ◽  
Aurélie Pinton ◽  
Hassan Taisso Mackaye ◽  
Andossa Likius ◽  
Patrick Vignaud ◽  
...  
Keyword(s):  

2007 ◽  
Vol 36 (3) ◽  
Author(s):  
Jean-Pierre Aguilar ◽  
Jacques Michaux ◽  
Thierry Pélissié ◽  
Bernard Sigé
Keyword(s):  

1996 ◽  
Vol 42 (3) ◽  
pp. 285 ◽  
Author(s):  
Albert D. Mahood ◽  
John A. Barron

2018 ◽  
Vol 92 (3) ◽  
pp. 506-522 ◽  
Author(s):  
Chiara Angelone ◽  
Stanislav Čermák ◽  
Blanca Moncunill-Solé ◽  
Josep Quintana ◽  
Caterinella Tuveri ◽  
...  

AbstractThe extreme rareness of Sardinian fossil sites older than Middle and Late Pleistocene makes the Monte Tuttavista karst complex (E Sardinia, Italy) very important. Remarkable lagomorph material, recovered from several fissure infillings of Monte Tuttavista referable to the Capo Figari/Orosei 1 and Orosei 2 faunal sub-complexes (early Pleistocene, ~2.1/1.9–1.1 Ma), allowed us to describe a new endemic insular leporid, Sardolagus obscurus n. gen. n. sp. The new taxon is characterized by a peculiar combination of an advanced p3 (Lepus-type) and a primitive P2 lacking deep flexa. The origin of such discrepancy, unprecedented among continental and insular endemic European leporids, is unclear. It could be the result of: (1) an independent evolution of p3 from an ancestor bearing the primitive P2/p3 (e.g., Alilepus, Hypolagus), or (2) a selective reversal morphocline from an Oryctolagus/Lepus-like leporine. The lack of data about the phylogenetic origin of the new taxon makes any inference about its possible arrival to Sardinia problematic. Crossing the European leporid records and evidence of migrations to Sardinia, we hypothesize three possible ages in which the ancestor of Sardolagus obscurus could have arrived in Sardinia, restricted to the late Miocene–early/late Pliocene (~8–3.6 Ma). The phylogenetic relationship between Sardolagus obscurus n. gen. n. sp. and the oldest Sardinian leporid, recorded from Capo Mannu D1 and dated at the early/late Pliocene boundary (~3.6 Ma), is unclear at present, however it is quite likely that they pertain to the same lineage.UUID: http://zoobank.org/ca8e0023-7c9d-4b00-a294-d166c37c5c71


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