Navigation Links
First orchid fossil puts showy blooms at some 80 million years old
Date:9/2/2007

omprise some 8 percent of all flowering species worldwide.

"Our analysis places orchids far toward the older end of the range that had been postulated, suggesting the family was fairly young at the time of the extinction of the dinosaurs some 65 million years ago," Ramrez says. "It appears, based on our molecular clock analyses, that they began to flourish shortly after the mass extinction at the so-called 'K/T boundary' between the Cretaceous and Tertiary periods, which decimated many of Earth's species."

Orchids, unlike most flowering plants, package pollen in unique structures called pollinia, which consist of relatively large masses of compact pollen grains. The 15- to 20-million-year-old specimen of a worker bee carrying orchid pollinia, recovered by a private collector in the Dominican Republic in 2000, came to the attention of Ram rez and his colleagues at Harvard's Museum of Comparative Zoology in 2005. While this particular species of stingless bee, Proplebeia dominicana, is now extinct, the scientists' analysis of the shape and configuration of its cargo of pollen places it firmly within one of five extant subfamilies of orchids.

The specimen is one of just a few fossils known to illustrate directly a plant-pollinator association. The specific placement of the pollen on the bee's back not only confirms the grains were placed through active pollination -- as opposed to a random encounter with an orchid -- but also sheds light on the exact type and shape of orchid flower that produced the pollen tens of millions of years ago.

By applying the so-called molecular clock method, the scientists also estimated the age of the major branches of the orchid family. To their surprise, they found that certain groups of modern orchids, including the highly prized genus Vanilla, evolved very early during the rise of the plant family.

"This result is puzzling and fascinating at the same time because modern species of Vanilla or
'/>"/>

Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. A genes first kiss sets off that affair known as puberty
2. Timing is everything: First step in protein building revealed
3. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
4. First atlas of key brain genes could speed research on cancer, neurological diseases
5. First-ever Compounds To Target Only Metastatic Cells Are Highly Effective Against Breast, Prostate, And Colon Cancers
6. NYCs First Rapid HIV Drug-resistant AIDS Case Prompts Call to Step Up HIV Prevention
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Love at first smell
9. Worlds largest rainforest drying experiment completes first phase
10. PCRM develops worlds first cruelty-free insulin assay
11. Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... the birds and the bees. But that old ... fertilized. The fertilization process for flowering plants is ... male and female reproductive cells. New research from ... Munich, and including Carnegie,s Wolf Frommer, David Ehrhardt, ... signaling process that guides flowering plant fertilization. It ...
(Date:8/21/2014)... , Aug. 21, 2014 Nxt-ID, Inc. ... growing mobile commerce market, announced today that its shares ... stock to be issued in its proposed underwritten public ... for listing on The Nasdaq Capital Market, subject to ... common stock and warrants, and will trade under the ...
(Date:8/21/2014)... Fla. , Aug. 21, 2014 /PRNewswire-iReach/ ... that it has agreed to a partnership ... Orlando,s fastest growing Certified Nursing ... Gabriel Health Institute  an exclusive member of ... result, Binary Biometrics will improve its service ...
Breaking Biology News(10 mins):Calcium and reproduction go together 2Nxt-ID Approved for NASDAQ Capital Market Listing 2Nxt-ID Approved for NASDAQ Capital Market Listing 3LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 2LiveScan Provider Binary Biometrics Announces Partnership with Preeminent CNA School, Gabriel Health Institute to Expand Services in Orlando Region 3
... more intense rainstorms and more frequent heat waves are ... when climate change is mentioned. Now, two University of ... transmission in wild birds can be added to the ... used a mathematical model to explore the consequences of ...
... of beetles and only two species of the tuatara, a ... Zealand. Crocodiles and alligators, while nearly 250 million years old, ... "winners" including mammals and many species of birds and ... biology. Scientists have often posited that because ...
... marine whelk, Solenosteira macrospira . He does all the work ... few of the baby snails are his own. The surprising ... S. macrospira in a small club of ... and sibling cannibalism, and the species has one of the most ...
Cached Biology News:Climate change could increase levels of avian influenza in wild birds 2Climate change could increase levels of avian influenza in wild birds 3Why are there so many species of beetles and so few crocodiles? 2Why are there so many species of beetles and so few crocodiles? 3Male snails babysit for other dads 2Male snails babysit for other dads 3
(Date:8/22/2014)... August 22, 2014 The Global and ... study on the current state of the Diabetes Drug ... a basic overview of the industry, including definitions, applications ... domestic market analysis are provided with a focus on ... A comparison between the international and Chinese situation is ...
(Date:8/22/2014)... Canada (PRWEB) August 22, 2014 ... in model organisms can be accelerated by exome ... and manufacturing technologies, the custom SeqCap EZ Developer ... research. , Mr. Watson will additionally present how ... with commercially available human and mouse exome kits. ...
(Date:8/21/2014)... team including DESY scientists has observed tiny quantum vortices ... in the journal Science that the exotic ... nanodroplets. It is the first time that the quantum ... of what is known as superfluid helium, have been ... expectations," says Andrey Vilesov of the University of Southern ...
(Date:8/21/2014)... The College of New Rochelle announced ... the Mid-Hudson Region to be designated as a START-UP ... from qualified “high-technology” businesses that align with the College’s ... have been selected for the START-UP NY program and ... stimulate economic development in New York by growing business ...
Breaking Biology Technology:Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 2Diabetes Drugs Industry Growth Analysis in Global, China Regions Research Report Available at DeepResearchReports.com 3Efficient Identification of Protein-Coding Variants in a Model Organism Through Exome Sequencing, New Webinar Hosted by Xtalks 2Scientists observe quantum vortices in cold helium droplets 2The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 2The College of New Rochelle Becomes First Private College in Mid-Hudson Region to Earn START-UP NY Designation 3
... . , What would be a case for ... for a micro engine. If it sputters, this is caused ... with its running. Researchers at the University of Stuttgart and ... observed this with a heat engine on the micrometre scale. ...
... Dec. 12, 2011  Kensey Nash Corporation (Nasdaq: ... by Spectranetics Corporation (Nasdaq: SPNC ) that ... of the endovascular product lines purchased from Kensey Nash ... $6 million milestone payable to Kensey Nash.  As previously ...
... 12, 2011  Fox Insurance Company, a Medicare Part D ... judgment in the arbitration between the company and ProCare, ... million, following a suit against ProCare based on Fox,s ... Nathan M. Barotz, chairman of Fox Insurance Company ...
Cached Biology Technology:The world's smallest steam engine 2The world's smallest steam engine 3Fox Insurance Company Awarded $3.3 Million in Arbitration Against Former Pharmacy Benefit Manager 2
... Construction KitTM allows graphic manipulation of DNA ... has an award winning interface design that ... addition to providing sophisticated drawing capabilities for ... the "Best Plasmid Mapping Software" by the ...
... Quality ISO 9001:2000 Certified ... All Precedures Validated, SOP's Training ... Process for All Procedures GLP Documentation Upon ... one stop shopping point for all your ...
...
...
Biology Products: