Hunter-gatherers had almost no malocclusion and dental crowding, and the condition first became common among the world's earliest farmers some 12,000 years ago in Southwest Asia, according to findings published today in the ...
Archaeology
Feb 4, 2015
5
1090
Researchers report that trap-jaw ants recognize the unique odor of a fertile queen only if the queen also shares the workers' own chemical cologne - a distinctive blend of dozens of smelly, waxy compounds that coat the ants' ...
Plants & Animals
Feb 2, 2015
1
30
An investigation of a 415-million-year-old fish skull strongly suggests that the last common ancestor of all jawed vertebrates, including humans, was not very shark-like. It adds further weight to the growing idea that sharks ...
Archaeology
Jan 12, 2015
0
533
New research suggests our jawed ancestors weren't responsible for the demise of their jawless cousins as had been assumed. Instead Dr Robert Sansom from The University of Manchester believes rising sea levels are more likely ...
Archaeology
Dec 16, 2014
6
2
Speed is an asset for a predator. Except when that predator runs so fast that it essentially blinds itself.
Plants & Animals
Nov 6, 2014
1
0
Lamprey—slimy, eel-like parasitic fish with tooth-riddled, jawless sucking mouths—are rather disgusting to look at, but thanks to their important position on the vertebrate family tree, they can offer important insights ...
Plants & Animals
Sep 17, 2014
0
0
If you never understood what "ontogeny recapitulates phylogeny" meant in high school, don't worry: biologists no longer think that an animal's "ontogeny", that is, its embryonic development, replays its entire evolutionary ...
Biotechnology
Sep 14, 2014
7
0
Injuries, birth defects (such as cleft palates) or surgery to remove a tumor can create gaps in bone that are too large to heal naturally. And when they occur in the head, face or jaw, these bone defects can dramatically ...
Polymers
Aug 13, 2014
0
0
Trap-jaw ant species are active hunters with venomous stings and jaws powerful enough to fling themselves through the air. According to new research, they are also spreading into new territory in the southeastern United States. ...
Plants & Animals
Jun 18, 2014
0
1
The skull of a newly discovered 325-million-year-old shark-like species suggests that early cartilaginous and bony fishes have more to tell us about the early evolution of jawed vertebrates—including humans—than do modern ...
Archaeology
Apr 16, 2014
0
0
