HOME >> BIOLOGY >> NEWS
Hopkins scientist evaluates latest findings on the ancestry of whales

From Moby Dick to Shamu, whales have long fascinated humans. Their remarkable status as ocean-dwelling mammals, along with dolphins and porpoises, at once makes them related to us and yet inconceivably different from us. Thus their evolution -- the developmental steps required to leave solid ground for a life in the water -- has long fascinated scientists, including Kenneth Rose of the Program for Functional Anatomy and Evolution at the Johns Hopkins School of Medicine.

In the September 21 issue of the journal Science, Rose provides outside perspective on a report in the same issue that fills an important gap in scientists' understanding of whale evolution. The report by others documents new fossils of very primitive whales that were found in Pakistan.

The new fossils, says Rose, have well-developed limbs and are the first to have well-enough preserved ankle bones to allow scientists to change their conclusions about which animals are the closest relatives of these 50 million-year-old primitive whales. The importance of this finding, and a similar report about even older fossils in the September 20 issue of Nature, is that it unifies the scientific perspective on whale evolution, says Rose.

"What's most important about these new fossils is that they contain well-preserved ankles, the most important region morphologically for establishing evolutionary relationships as early whales were in the process of becoming aquatic," explains Rose. "Previously, only fragments have been known of these species, and the few ankle bones that some had identified were not widely accepted among scientists because of the condition of the fossils and their lack of direct association with whale skulls."

There are two main ways scientists determine evolutionary relationships among various species, he explains. Some scientists consider physical characteristics of specimens -- the morphology -- and look for similarities or differences, the pres
'"/>

Contact: Joanna Downer
jdowner1@jhmi.edu
410-614-5105
Johns Hopkins Medical Institutions
20-Sep-2001


Page: 1 2 3

Related biology news :

1. Hopkins scientists use blood proteins to detect ovarian cancer
2. Hopkins to found first center for comprehensive study of epigenetics
3. Hopkins scientists overcome main obstacle to making tons of short, drug-like proteins
4. Hopkins Marine Station honored by the American Society for Microbiology
5. Johns Hopkins gene hunters pinpoint new cancer gene target
6. Hopkins researchers identify transplantation antigens among Sioux Indians
7. Hopkins researchers discover how nitric oxide prevents blood vessel inflammation
8. Hopkins is first US institution to obtain powerful genotyping system
9. Dr. Robot tested at Hopkins
10. From Hopkins: Children may outgrow peanut allergies
11. OXiGENE announces launch of ophthalmic clinical trial at The Johns Hopkins School of Medicine

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


(Date:12/18/2018)... ... 18, 2018 , ... CP Merritt is a national champion Arabian horse that ... however in 2006, he had a medical setback that caused him to limp at ... from cartilage degeneration in his right rear fetlock. Such an injury could be ...
(Date:12/13/2018)... ... December 12, 2018 , ... Illumina, Kaiser Permanente, ResMed and ... The San Diego-based team-building and cooking events company has hosted an impressive guest ... cooking challenges. , Each group who visits receives a completely customized experience, ...
(Date:12/6/2018)... ... December 06, 2018 , ... Stewart has been ... contract services, throughout his career. During his recent five-year tenure with InSphero he ... established the commercial laboratory operations in Brunswick, Maine. Through these experiences, Stewart has ...
Breaking Biology News(10 mins):
(Date:1/8/2019)... ... ... The American Society of Gene and Cell Therapy’s (ASGCT) first class ... of industry leaders identified by the ASGCT board of directors. In total, the Society ... ASGCT members designing transformative pilot studies in gene and cell therapy as they prepare ...
(Date:1/4/2019)... ... January 02, 2019 , ... ... detect precancer and cancer cells in blood, has been named as a partner ... global biotech company developing cell therapies for cancer treatment, will use CellMax Life’s ...
(Date:12/19/2018)... ... 2018 , ... RURO, Inc., a leading provider of information ... The new release enhances the latest version of Limfinity®, RURO’s software framework, and ... , Validation protocols, and their execution, are critical for software systems scrutinized by ...
(Date:12/14/2018)... ... 2018 , ... NOVA OCULUS PARTNERS, LLC, and its Canadian ... immediately begin a clinical patient trial in Edmonton using their pioneering technology for ... has granted what is called an Investigational Testing Authorization for the trial, while ...
Breaking Biology Technology:
Cached News: