Navigation Links
Jurassic pain: Giant 'flea-like' insects plagued dinosaurs 165 million years ago
Date:5/1/2012

CORVALLIS, Ore. It takes a gutsy insect to sneak up on a huge dinosaur while it sleeps, crawl onto its soft underbelly and give it a bite that might have felt like a needle going in but giant "flea-like" animals, possibly the oldest of their type ever discovered, probably did just that.

And a few actually lived through the experience, based on the discovery by Chinese scientists of remarkable fossils of these creatures, just announced in Current Biology, a professional journal.

These flea-like animals, similar but not identical to modern fleas, were probably 10 times the size of a flea you might find crawling on the family dog with an extra-painful bite to match.

"These were insects much larger than modern fleas and from the size of their proboscis we can tell they would have been mean," said George Poinar, Jr., a professor emeritus of zoology at Oregon State University, who wrote a commentary on this find in the same journal.

"You wouldn't talk much about the good old days if you got bit by this insect," Poinar said. "It would have felt about like a hypodermic needle going in a flea shot, if not a flu shot. We can be thankful our modern fleas are not nearly this big."

Poinar, who is an international expert in ancient and extinct insect life forms, said it's possible that the soft-bodied, flea-like insects found in these fossils from Inner Mongolia are the evolutionary ancestors of modern fleas, but most likely they belong to a separate and now extinct lineage.

Called Pseudopulex jurassicus and Pseudopulex magnus, they had bodies that were more flat, like a bedbug or tick, and long claws that could reach over scales on the skin of dinosaurs so they could hold onto them tightly while sucking blood. Modern fleas are more laterally compressed and have shorter antennae, and are able to move quickly through the fur or feathers of their victims.

"These are really well-preserved fossils that
'/>"/>

Contact: George Poinar, Jr.
poinarg@science.oregonstate.edu
541-737-5366
Oregon State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Jurassic Park had it right: Some dinosaurs hunted by night
2. Chronic pain: Watch out before accepting diagnosis and treatment
3. Neuropathic pain: The sea provides a new hope of relief
4. I feel your pain: Neural mechanisms of empathy
5. Giant squids giant eyes: The better to see hungry whales with
6. Extinct for 150 years, an iconic Galpagos giant tortoise species lives
7. Giant flakes make graphene oxide gel
8. Tiny fossil fragment reveals giant-but-ugly-truth
9. Giant kraken lair discovered
10. Colossal aggregations of giant alien freshwater fish as a potential biogeochemical hotspot
11. Scientists take a giant step for people -- with plants!
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/22/2014)... from NeuroPhage Pharmaceuticals, Inc. have engineered a series ... neurodegenerative diseases that are characterized by misfolded proteins, ... molecules are based on what the Company calls ... recognizes a characteristic common to many toxic, misfolded ... This approach provides NeuroPhage with an array of ...
(Date:4/21/2014)... at The University of Texas at Dallas have ... carbon structures used in the manufacture of many ... Paul Pantano, associate professor of chemistry, and Dr. ... recently received a $459,000, three-year grant from the ... the National Institutes of Health, to track how ...
(Date:4/21/2014)... colleagues from Pittsburgh University, find how lipid mediators ... Nature Chemistry. Lipid mediators are molecules playing an ... to some of them has earned a Nobel ... "cellular power plants", the organelles where oxidation of ... (ATP), a molecule universally used for storage and ...
Breaking Biology News(10 mins):NeuroPhage discovers GAIM-changing molecules to combat Alzheimer's and related diseases 2NeuroPhage discovers GAIM-changing molecules to combat Alzheimer's and related diseases 3Grant to fund research on possible cell contaminants 2Grant to fund research on possible cell contaminants 3The anti-inflammatory factory 2The anti-inflammatory factory 3
... Western Europe,s largest lakes, Lake Geneva, in large enough quantities ... that these small bits of plastic can be harmful to ... waterborne organisms, the full extent of their consequences in lakes ... is being extending under a mandate by the Swiss Federal ...
... paper published in the Journal of Animal Science ... when including distillers dried grains with solubles (DDGS). Some ... the fat-softening effects of DDGS. Firmer fat means longer-lasting ... found that including saturated fats in DDGS diets makes ...
... to threaten common ash trees across Europe, new research in ... impact of forest diseases to discover if diseases played a ... large-scale pathogen outbreaks were much more infrequent in the past, ... locations, such as the international seed trade, is a major ...
Cached Biology News:Microplastic pollution prevalent in lakes too 2Microplastic pollution prevalent in lakes too 3Saturated fats do not yield better bacon 2
(Date:1/15/2014)... ON (PRWEB) January 15, 2014 AudioNotch ... experimental new therapy for the treatment of tinnitus. Patients ... tinnitus frequency, and over a period of weeks to months, ... Sound Therapy in two forms: Notched Music and Notched White ...
(Date:1/14/2014)... Histogen, Inc., a regenerative medicine company ... under simulated embryonic conditions, today announced that they have ... Inc. for physician-dispensed aesthetic products containing Histogen’s proprietary multipotent ... is an amendment to the existing license between Histogen ...
(Date:1/14/2014)... Texas , Jan. 14, 2014 The ... and research medicinal plants and therapeutic derivatives thereof ... health professionals, and researchers about the challenges of ... http://photos.prnewswire.com/prnh/20100430/DC95601LOGO ) The Society ...
(Date:1/14/2014)... , Jan. 14, 2014  RXi Pharmaceuticals Corporation (OTCQX: ... and commercializing innovative therapies addressing major unmet medical ... received the Notice of Allowance from the United ... self-delivering RNAi compounds (sd-rxRNA®), for the treatment of ...
Breaking Biology Technology:Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3
... Wis. - At least six Wisconsin biotech companies ... an event that may be another signal of the ... , ,The Wisconsin companies will travel to Minneapolis for ... by the Biotechnology Industry Organization . Companies will ...
... Madison, Wis. - The Center for Technology Transfer ... Spinworks LLC, a company that has developed a series ... to reduce usage of natural gas in their furnaces. , ... and will help Spinworks expand its business and product offerings, ...
... Active Air Networks Wisconsin said Monday it ... to consumers and business users throughout Wisconsin communities. ... multiple villages and towns throughout Washington County. Its citywide ... 802.11 a/b/g Wi-Fi standards. The service is mobile, yet ...
Cached Biology Technology:Six Wisconsin firms to present at BIO Mid-America VentureForum 2Six Wisconsin firms to present at BIO Mid-America VentureForum 3Tech center supports energy-saving device for heat-treating plants 2
Mycoplasma tested...
Human PDGF, CF...
... Lacks the mycobacteria found ... side-effects. For this reason, Incomplete, ... Freund's Adjuvants may be used to produce water-in-oil ... emulsions stimulate high and long-lasting antibody responses which ...
Alexa Fluor 350/488/594 Filter Set (Semrock Brightline) *mounted* *Zeiss Axio AF...
Biology Products: