TV News LIES

Sunday, Feb 01st

Last update11:24:34 PM GMT

You are here News Science How old is sonar? Fossilized whale skull puts it at over 32 million years.

How old is sonar? Fossilized whale skull puts it at over 32 million years.

cotylocara maceio

Sperm whales do it. Dolphins do it. Orcas do it. And now, researchers have unveiled the fossilized skull of a 28-million-year-old marine mammal that did it too – used sound to find its next meal or swim safely through turbid waters.

The creature, Cotylocara macei, is the earliest known cetacean to show skeletal evidence for a natural form of sonar, according to a research team reporting the results in Thursday's issue of the journal Nature.

After comparing the nearly complete skull with those of other fossil cetaceans, the team placed C. macei on the evolutionary tree just above the common ancestor to all toothed cetaceans. That branch of the whale family uses echolocation to find its food, unlike their cousins who feed by straining seawater through boney baleen plates. Right and humpback whales are modern examples of these strainers.

The study "provides an important new piece of information on when echolocation originated, such that it originated almost immediately after the split between baleen whales and toothed whales," notes Frants Jensen, a researcher at the Woods Hole Oceanographic Institution in Woods Hole, Mass., who studies marine echolocation.

More...

 


Most Recent Related Stories...


Obama proposes 14 percent tax on U.S. companies' untaxed foreign earnings

Obama proposes foreign earnings taxPresident Barack Obama's fiscal 2016 budget would impose a one-time 14 percent tax on some $2...

Scientists have found a way to ‘unboil’ eggs – and it could be a life-saver

unboiling eggsIt sounds like the breakthrough that no one was asking for: scientists have announced they have...

160-million-year-old ‘dragon’ dinosaur discovered in China

160 million year old dinosaurIn the land before time, "dragons" walked the earth.Canadian paleontologists uncovered a new species of mythically-proportioned...

Did Fishermen Find Evidence of an Unknown Group of Primitive Humans?

possible new humanoidIt isn’t everyday that a fisherman’s catch has the potential to alter what we know about...
 
America's # 1 Enemy
Tee Shirt
& Help Support TvNewsLIES.org!
TVNL Tee Shirt
 
TVNL TOTE BAG
Conserve our Planet
& Help Support TvNewsLIES.org!
 
Get your 9/11 & Media
Deception Dollars
& Help Support TvNewsLIES.org!
 
The Loaded Deck
The First & the Best!
The Media & Bush Admin Exposed!