HOME >> BIOLOGY >> NEWS
Dinosaur fossil record compiled, analyzed

A graduate student in earth and planetary sciences in Arts & Sciences at Washington University in St. Louis has combed the dinosaur fossil record from T Rex to songbirds and has compiled the first quantitative analysis of the quality and congruence of that record.

Julia Heathcote, whose advisor is Josh Smith, Ph.D., Washington University assistant professor of earth and planetary sciences, examined data of more than 250 dinosaur genera, or classes, as well as various clades, or family tree branches, of dinosaur classes.

Heathcote found that existing data is between one-half and two-thirds complete, or of high quality, for dinosaur data. As template, she used two published whole dinosaur studies and compared them with smaller family trees within the context of the whole dinosaur data, commonly known as the Dinosauria. She also analyzed for congruence the correlation between the fossil record and family tree relationships. Heathcote found some of the clades both complete and congruent, while others are poor in both ways.

"The whole Dinosauria fossil record I would say is moderately good, which was a surprise, because I thought it would be much worse," Heathcote said. "It generally shows a low degree of completeness but a high degree of congruence with the existing phylogenies, or family trees, studied."

Her results are important for paleontologists who are especially focused on the evolution of dinosaurs. It is to the paleontologist what Beckett's Baseball Card Price guide is to the baseball card collector, and more - Heathcote's analysis provides information on the relationships between classes and groups, whereas the Beckett guide draws no lineages for players, for instance.

Heathcote said that there have been many attempts to analyze evolutionary patterns using the fossil record, but that the patterns can only be interpreted usefully in the context of stratigraphy -- essentially how old the fossils are. It's important to know th
'"/>

Contact: Tony Fitzpatrick
314-935-5272
Washington University in St. Louis
10-Feb-2004


Page: 1 2

Related biology news :

1. Dinosaur symposium at the Smithsonian Institution
2. Dinosaur, crab fossils reveal ecosystem secrets
3. Dinosaur ancestors vision possibly nocturnal
4. Dinosaur discoveries in Montana
5. Dinosaurs had a "rostral nostril," says Science researcher
6. Dinosaurs large noses may have been key to physiological processes
7. Dinosaurs: New study counters age-old theory
8. Dinosaur fossils reveal evolutions big picture, says Paul Sereno
9. Dinosaurs And Neanderthals
10. Fossil Footprints Show Foot-Movement Similarity In Dinosaurs And Birds
11. Montana Scientist Returns From Dinosaur Nesting Site In Patagonia

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/14/2019)... ... September 12, 2019 , ... ... solutions for drugs, biologics, gene therapies, and consumer health products, today announced that ... biologics business. Dr. Schaffer has played an integral advisory role on the gene ...
(Date:9/8/2019)... Calif. (PRWEB) , ... September 06, 2019 , ... ... Board of Directors of Nanosens Innovations have each authorized the respective companies to ... a subsidiary of Cardea, with the Nanosens brand representing a series of products ...
(Date:8/27/2019)... ... ... Shoreline Biome , a microbiome research company that develops tools for characterizing ... and Karen Woodward as its VP of Business Development. , These two new ... expand the company’s sales worldwide. , Prior to joining Shoreline Biome, Bill McKenzie was ...
Breaking Biology News(10 mins):
(Date:9/17/2019)... ... September 17, 2019 , ... Tucker, a Labrador retriever, was just a puppy ... was limping and lame on his right hip and elbow. At one year of ... “the worst case the vet had seen.” He was prescribed pain medications, both oral ...
(Date:9/17/2019)... ... September 16, 2019 , ... MyBioGate Global ... Focus @ Biotech Week Boston, a forum organized by MyBioGate, Inc. and CUBIO ... , After a careful process of evaluation, twelve companies out of over 200 ...
(Date:9/9/2019)... ... September 09, 2019 , ... Visikol CEO Dr. Michael Johnson ... focused on how best to characterize 3D cell culture models. The inherent problem of ... too thick and opaque to image through and therefore traditional wide-field or even confocal ...
(Date:8/29/2019)... ... August 29, 2019 , ... ... affecting grapevines, a feat they hope will ultimately help protect the multibillion-dollar grape ... several Rochester Institute of Technology faculty and alumni sequenced the microbiome found within ...
Breaking Biology Technology:
Cached News: