Navigation Links
Evidence is weak for tropical rainforest 65 million years ago in Africa's low-latitudes
Date:10/21/2010

Details sparse, but big picture emerges for past 65 million years

Paleobotanical data for Africa are generally meager and uneven for the Cenozoic, according to Jacobs and her co-authors.

In an original series of maps, they chart each Cenozoic Africa paleobotanical locale described in the published research to date. There are a mere 82 sites in all. Most of the sites date to 50 million years ago. Fewer date to 20 million, 30 million, 10 million and perhaps most important 2 million years ago, when the human family was evolving.

"Africa is disappointingly undersampled," say Jacobs and her colleagues. "This vast continent, roughly three times the area of the United States, has so far been documented by only a handful of Paleogene plant and vertebrate localities, and it has a Neogene record heavily biased toward the depositional basins of the East African Rift."

Shift from descriptive to analytic approach driven by holistic view

For a continent so important for its role in the evolution of mammals, the scarcity of plant fossil data stands in sharp contrast.

"As impressive as is the contemporary mammalian diversity of Africa, it is dwarfed by that of the Cenozoic," write the volume's editors, paleozoologist Lars Werdelin, the Swedish Museum of Natural History, and paleontologist William Joseph Sanders, the University of Michigan. Africa today represents 20 percent of the world's land mass, is the only continent to occupy both the north and south temperate zones, and is home now to more than 1,100 mammalian species, they write in the introduction.

Africa's paleobotanical record is key to a holistic understanding of ancient mammals, says H.B.S. Cooke in the preface. A mammal expert, Cooke was editor of the earlier 1978 scientific reference, "Evolution of African Mammals" (Harvard University Press).

"Most striking over the past years has been a shift in studying fossils from a larg
'/>"/>

Contact: Margaret Allen
mallen@smu.edu
214-768-7664
Southern Methodist University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Genetic evidence for avian influenza movement from Asia to North America via wild birds
2. Mounting evidence shows health benefits of grape polyphenols
3. New evidence that people make aspirins active principle -- salicylic acid
4. Evidence of the Lost World -- did dinosaurs survive the end Cretaceous extinctions?
5. University of Leicester archaeologist uncovers evidence of ancient chemical warfare
6. New study provides further evidence that apple juice can delay onset of Alzheimers disease
7. New lab evidence suggests preventive effect of herbal supplement in prostate cancer
8. DNA evidence is in, newly discovered species of fish dubbed H. psychedelica
9. Polar research reveals new evidence of global environmental change
10. Evidence of earliest known domestic horses found in Kazakhstan
11. Researchers find the earliest evidence of domesticated maize
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Evidence is weak for tropical rainforest 65 million years ago in Africa's low-latitudes
(Date:9/15/2014)... is a vital source of energy for both plants ... its way into the cell could lead to the ... increase in the amount of fruits and vegetables farmers ... uncovered one of these "pathways" into the cell by ... a strand of spider silk. , To determine the ...
(Date:9/15/2014)... State University researchers have found "the most famous wheat ... be used to transfer valuable genes from ... for breeders to develop wheat varieties with the disease- ... of genetic tools that can reduce crop losses and ... controversy of Genetically Modified Organisms, or GMOs., "The real ...
(Date:9/15/2014)... strategic vision document, released today by the National ... long-term goals, objectives, and strategies for the program ... the next five years (2015-2020). In addition, ... to be funded in 2015, will include exploratory ... , The $500 million, 30-year program to ...
Breaking Biology News(10 mins):X-rays unlock a protein's SWEET side 2X-rays unlock a protein's SWEET side 3WSU researchers find 'most famous wheat gene' 2NAS Gulf Research Program announces strategic vision, initial opportunities 2NAS Gulf Research Program announces strategic vision, initial opportunities 3NAS Gulf Research Program announces strategic vision, initial opportunities 4
... NEW YORK, April 5, 2010 Alpha cells in ... insulin-producing beta cells, advancing the prospect of regenerating beta cells ... come from a study at the University of Geneva, co-funded ... in the online edition of the scientific journal Nature ...
... always get what they want, to paraphrase the Rolling Stones, ... a study that will appear in the May issue of ... both the broad sweep of evolutionary changes in life on ... regional environmental shifts. And yet the amount of variability seen ...
... Commission has approved a $1,127,873 award to Yellow ... of Cincinnati for their "Advanced Modified Carbon Nanotube-Based ... Research Professor William Heineman, in the McMicken College ... officially part of the million-dollar team. ...
Cached Biology News:Researchers show some cells in pancreas can spontaneously change into insulin-producing cells 2Researchers show some cells in pancreas can spontaneously change into insulin-producing cells 3Ecologists receive mixed news from fossil record 2Ohio Third Frontier awards million-dollar grant to YSI-University of Cincinnati team 2Ohio Third Frontier awards million-dollar grant to YSI-University of Cincinnati team 3
(Date:9/16/2014)... field of molecular electronics could take our definition ... construction of tiny circuits from molecular components. In ... on the roles currently played by comparatively-bulky wires, ... from five Japanese and Taiwanese universities has identified ... a molecule called picene. In a paper published ...
(Date:9/16/2014)... September 16, 2014 BlueInGreen® ... most efficient method for delivering dissolved gases into ... Inc. as a manufacturer’s representative firm to ... dissolution products for municipal water and wastewater applications ... , H2Flow was founded in 1992 and serves ...
(Date:9/16/2014)... CIRTEC Medical Systems’ Board of Directors has ... CIRTEC. , “I am delighted to be joining ... Brian Highley. “The company has made great strides improving ... over the past two years. The goal now is ... expand the services Cirtec offers its medical device customers.” ...
(Date:9/16/2014)... (PRWEB) September 16, 2014 ... initiatives to position themselves for their 89th ... labeling and encoding, Pharma Packaging Solutions is ... hardware and software and new procedures. Establishing ... Good Manufacturing Practices (cGMP), Pharma Packaging Solutions ...
Breaking Biology Technology:The future face of molecular electronics 2BlueInGreen® Expands into Canada – Signs Representative Agreement with H2Flow Equipment Inc. 2Adding Serialization Capabilities and Expanded Capacity, Pharma Packaging Solutions Is Preparing for 89th Year of Business 2
... STAAR Surgical Company (Nasdaq: STAA ), a ... products, today announced that it has received CE Mark ... use in minimally invasive cataract surgical procedures. The ... intraocular (IOL) KS-X lens delivery system in the European ...
... ... Matrix Genomics, Inc. have identified a concise genetic signature found among a third of Parkinson,s ... is found in the LRRK2 gene located on chromosome 12. The work was led by ... ...
... Bioscience International, a leader in enabling and accelerating the ... China, today announced a strategic drug co-development partnership with ... range of therapeutic areas and represents one of the ... biotech company and a Chinese university. , , ...
Cached Biology Technology:STAAR Surgical Receives CE Mark Approval for KS-X Preloaded Hydrophobic Acrylic Lens Injector System 2STAAR Surgical Receives CE Mark Approval for KS-X Preloaded Hydrophobic Acrylic Lens Injector System 3STAAR Surgical Receives CE Mark Approval for KS-X Preloaded Hydrophobic Acrylic Lens Injector System 4Matrix Genomics, Elizabeth Corder, PhD - Gene Variation in the LRRK2 Gene and High Risk for Parkinson's Disease 2Matrix Genomics, Elizabeth Corder, PhD - Gene Variation in the LRRK2 Gene and High Risk for Parkinson's Disease 3HUYA Bioscience Announces Strategic Collaboration With the Shenyang Pharmaceutical University 2HUYA Bioscience Announces Strategic Collaboration With the Shenyang Pharmaceutical University 3
... yeast/leuconostoc overproducer ATP: D-hexose 6- ... One unit of HK will ... in 1 min at 25C ... of G6P-DH will oxidize 1 ...
... coli strain containing an overproducing clone of T4 ... formation of a phosphodiester bond between juxtaposed ... or RNA. It repairs single-stranded nicks in duplex ... both blunt-end and cohesive-end fragments of duplex DNA ...
... product is expected to react with ... but has not been specifically determined. ... line against partially purified rabbit muscle ... with all forms of Pyruvate kinase. ...
... component of the COP9 signalosome complex (CSN), ... developmental processes. The CSN complex is an ... pathway by mediating the deneddylation of the ... The complex is also involved in phosphorylation ...
Biology Products: