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Terrestrial Origins and Evolution
A new study of Tiktaalik roseae (middle), a 375-million-year-old
transitional fossil, highlights an intermediate step between the condition
in fish like Eusthenopteron (bottom) and that in early limbed forms like
Acanthostega (top).
Credit: Univeristy of Chicago / Illustration by Kalliopi Monoyios
Viewed: 460 times
01/14/09
A representation of the 3D structure of the protein adenylate kinase (AK). Credit: Peter Nguyen
Viewed: 358 times
01/14/09
Thermus thermophilus lives in very hot temperatures. The bacterium´ optimal growth temperature is about 65 degrees C (149 F).
Credit: Structural-Biological Whole Cell project (link http://www.thermus.org/ e_index.htm).
Viewed: 515 times
01/14/09
Researchers will be studying the protein stability of Escherichia coli (seen in this scanning electron micrograph) at 40 degrees Celsius. Credit: Rocky Mountain Laboratories, NIAID, NIH.
Viewed: 416 times
01/14/09
Life may have originated at active hydrothermal vents where thermophiles would have thrived. Credit: New Zealand American Submarine Ring of Fire 2007 Exploration, NOAA Vents Program, the Institute of Geological & Nuclear Sciences and NOAA-OE.
Viewed: 561 times
01/14/09

University of Utah geologist Winston Seiler walks among hundreds of potential dinosaur footprints in a "trample surface" that some researchers believe was a watering hole amid desert sand dunes during the Jurassic Period 190 million years ago. Credit:Roger Seiler/University of Utah
Viewed: 521 times
01/14/09
This image shows what might be a Eubrontes dinosaur footprint. Dinosaur footprints are named by their shape because the species and genus of animal that made them isn't known, although Eubrontes tracks are believed to have been made by upright-walking, meat-eaters smaller than Tyrannosaurus rex. Credit: Winston Seiler/University of Utah
Viewed: 448 times
01/14/09
Geologist Winston Seiler with some of the dinosaur tracks. The impressions once were thought to be potholes eroded by water. Now researchers have suggested that the impressions comprise a large dinosaur "trample surface" in northern Arizona. Credit: Nicole Miller/University of Utah
Viewed: 613 times
01/14/09
Ptomacanthus anglicus
Viewed: 483 times
05/27/09
bobtail
Viewed: 351 times
05/27/09

Federico Krause
Viewed: 492 times
05/27/09
Marine bivalves
Viewed: 485 times
05/27/09
Protein 3D
Viewed: 345 times
05/27/09
quartz with chlorite phantoms
Viewed: 354 times
05/27/09
primitive gene
Viewed: 354 times
05/27/09

Pilbara Craton WA
Viewed: 435 times
05/27/09
HF etching
Viewed: 375 times
05/27/09
siderite crystals
Viewed: 352 times
05/27/09
Penguins
Viewed: 337 times
05/27/09
bivalve morphologies
Viewed: 340 times
05/27/09

Tapichalaca
Viewed: 453 times
05/27/09
fossil fish
Viewed: 437 times
05/27/09
Eocene Green River Formation
Viewed: 354 times
05/27/09
carvone
Viewed: 352 times
05/27/09
Mammoth
Viewed: 367 times
05/27/09

E coli 10000x
Viewed: 358 times
05/27/09
elongation factor
Viewed: 340 times
05/27/09
Chicxulub sediments
Viewed: 333 times
05/27/09
Galapagos
Viewed: 327 times
05/27/09
Hadrosaurs
Viewed: 371 times
05/27/09

TreeofLife
Viewed: 330 times
06/07/09
Birdskeleton
Viewed: 315 times
06/09/09
EvoGrid 10
Viewed: 334 times
07/01/09
EvoGrid 03
Viewed: 315 times
07/01/09
EvoGrid 05
Viewed: 365 times
07/01/09

EvoGrid 02
Viewed: 478 times
07/01/09
carbonates
Viewed: 373 times
07/10/09
Dinosaurburrow
Viewed: 428 times
07/15/09
Dinoburrow2
Viewed: 366 times
07/15/09
oryctodromeus
Viewed: 353 times
07/15/09

StrelleyPool
Viewed: 352 times
07/19/09
SouthChinaFossils
Viewed: 488 times
07/28/09
CrocFossil
Viewed: 501 times
08/04/09
cryptomartus
Viewed: 304 times
08/05/09
Eophrynus
Viewed: 318 times
08/05/09

Ediacara
Viewed: 352 times
08/21/09
Charnia
Viewed: 451 times
08/21/09
SemiPermeable
Viewed: 336 times
08/21/09
EoceneWyoming
Viewed: 478 times
08/22/09
Cliff_at_Stevns_Klint
Viewed: 324 times
10/02/09

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