scholarly journals Biotic Response to early Eocene Warming Events: Integrated Record from Offshore Zealandia, north Tasman Sea

2021 ◽  
Author(s):  
L. Alegret ◽  
D. T. Harper ◽  
C. Agnini ◽  
C. Newsam ◽  
T. Westerhold ◽  
...  
Keyword(s):  
Early Eocene ◽  
Biotic Response ◽  
Tasman Sea

An early Eocene carbon cycle perturbation at ∼52.5 Ma in the Southern Alps: Chronology and biotic response

2009 ◽  
Vol 24 (2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Claudia Agnini ◽  
Patrizia Macrì ◽  
Jan Backman ◽  
Henk Brinkhuis ◽  
Eliana Fornaciari ◽  
...  
Keyword(s):  
Carbon Cycle ◽  
Southern Alps ◽  
Early Eocene ◽  
Biotic Response

scholarly journals Rapid carbon injection and transient global warming during the Paleocene-Eocene thermal maximum

2008 ◽  
Vol 87 (3) ◽  
pp. 201-206 ◽  
Author(s):  
A. Stuijs ◽  
H. Brinkhuis
Keyword(s):  
Global Warming ◽  
High Latitude ◽  
Elevated Temperatures ◽  
Hydrological Cycle ◽  
Warming Trend ◽  
Early Eocene ◽  
Biotic Response ◽  
Thermal Maximum ◽  
Carbon Injection

The Paleocene-Eocene Thermal Maximum (PETM), ~55.5 Myr ago, was a geologically brief (~170 kyr) episode of globally elevated temperatures, which occurred superimposed on the long-term late Paleocene and early Eocene warming trend (Fig. 1). It was marked by a 5 – 8° C warming in both low and high-latitude regions, a perturbation of the hydrological cycle and major biotic response on land and in the oceans, including radiations, extinctions and migrations (see overviews in Bowen et al., 2006; Sluijs et al., 2007a).

Early Eocene Thermal Maximum 3: Biotic Response at Walvis Ridge (SE Atlantic Ocean)

2018 ◽  
Vol 33 (8) ◽  
pp. 862-883 ◽  
Author(s):  
Ellen Thomas ◽  
Flavia Boscolo-Galazzo ◽  
Barbara Balestra ◽  
Simonetta Monechi ◽  
Barbara Donner ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Early Eocene ◽  
Walvis Ridge ◽  
Biotic Response ◽  
Thermal Maximum

Morphology and Affinities of Ampelocissites Seeds (Vitaceae: Ampelopsis clade) from the Paleogene of Texas, USA

2020 ◽  
Vol 45 (3) ◽  
pp. 478-482
Author(s):  
Steven R. Manchester
Keyword(s):  
Computed Tomography ◽  
Cross Sections ◽  
Seed Coat ◽  
Ct Scanning ◽  
Seed Morphology ◽  
Early Eocene ◽  
Micro Computed Tomography ◽  
X Ray ◽  
Fossil Seeds ◽  
Fossil Genus

Abstract—The type material on which the fossil genus name Ampelocissites was established in 1929 has been reexamined with the aid of X-ray micro-computed tomography (μ-CT) scanning and compared with seeds of extant taxa to assess the relationships of these fossils within the grape family, Vitaceae. The specimens were collected from a sandstone of late Paleocene or early Eocene age. Although originally inferred by Berry to be intermediate in morphology between Ampelocissus and Vitis, the newly revealed details of seed morphology indicate that these seeds represent instead the Ampelopsis clade. Digital cross sections show that the seed coat maintains its thickness over the external surfaces, but diminishes quickly in the ventral infolds. This feature, along with the elliptical chalaza and lack of an apical groove, indicate that Ampelocissites lytlensis Berry probably represents Ampelopsis or Nekemias (rather than Ampelocissus or Vitis) and that the generic name Ampelocissites may be useful for fossil seeds with morphology consistent with the Ampelopsis clade that lack sufficient characters to specify placement within one of these extant genera.

An early Eocene florule from central Texas

1925 ◽  
pp. 87-92
Author(s):  
Edward Wilber Berry
Keyword(s):  
Early Eocene ◽  
Central Texas
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