News tagged with placoderms
Fossilised pregnant fish was one of the first animals to have sex
(PhysOrg.com) -- A pregnant fossil fish at the Natural History Museum in London has shed light on the possible origin of sex, according to a study published in Nature today by an international team includ ...
Biology /
Feb 25, 2009 |
4.9 / 5 (16) |
3
Search results for placoderms
New study showing pelvic girdles arose before the origin of movable jaws
Almost all gnathostomes or jawed vertebrates (including osteichthyans, chondrichthyans, ‘acanthodians’ and most placoderms) possess paired pectoral and pelvic fins. To date, it has generally been ...
Other Sciences / Archaeology & Fossils
Jan 10, 2012 |
not rated yet |
0
Vertebrate jaw design locked 400 million years ago
More than 99 per cent of modern vertebrates (animals with a backbone, including humans) have jaws, yet 420 million years ago, jawless, toothless armour-plated fishes dominated the seas, lakes, and rivers. ...
Jul 06, 2011 |
3 / 5 (2) |
0
|
Prehistoric Fish Extinction Paved the Way for Modern Vertebrates
A mass extinction of fish 360 million years ago hit the reset button on Earth's life, setting the stage for modern vertebrate biodiversity, a new study reports.
Other Sciences / Archaeology & Fossils
May 17, 2010 |
4.8 / 5 (13) |
2
|
Swedish researcher finds missing piece of fossil puzzle
The mode of reproduction seen in modern sharks is nearly 400 million years old. That is the conclusion drawn by Professor Per Erik Ahlberg, Uppsala University, from his discovery of a so-called "clasper" in a primitive fossil ...
Other Sciences / Archaeology & Fossils
Jul 13, 2009 |
5 / 5 (1) |
2
Fossil fish shows oldest live birth
(PhysOrg.com) -- A 380-million-year-old fossil fish that shows an unborn embryo and umbilical cord has been discovered, scientists report in the journal Nature.
Biology /
Feb 25, 2009 |
4.2 / 5 (6) |
0
Aussie scientists discover oldest proof of live birth
Australian scientists have discovered the oldest evidence of live birth on the planet, thanks to a fossil fish from Western Australia with a well-preserved embryo inside the body cavity.
Other Sciences / Archaeology & Fossils
May 28, 2008 |
4.8 / 5 (25) |
6
Fresh fossil evidence of eye forerunner uncovered
Ancient armoured fish fossils from Australia present some of the first definite fossil evidence of a forerunner to the human eye, a scientist from The Australian National University says.
Other Sciences / Archaeology & Fossils
Dec 12, 2007 |
4.3 / 5 (8) |
0
Fossilized tissue found in ancient fish
Australian scientists say fossilized muscle has been discovered in the remains of two fish that lived about 380 million years ago.
Other Sciences / Archaeology & Fossils
Feb 14, 2007 |
4.2 / 5 (6) |
0
Ancient predator had strongest bite of any fish, rivaling bite of large alligators and T. rex
It could bite a shark in two. It might have been the first “king of the beasts.” And it could teach scientists a lot about humans, because it is in the sister group of all jawed vertebrates.
Biology /
Nov 28, 2006 |
4.5 / 5 (116) |
0
I there but caught a glimpse... of a 410 million-year-old eye or two
A University of Queensland researcher has uncovered the oldest known fossilised eye capsules from jawed fishes.
Other Sciences / Archaeology & Fossils
Sep 06, 2006 |
4 / 5 (20) |
0
List of search results for placoderms
