1000PA

| 1000 Prehistorc Animals | Dinosaurs, Fossils, Ruins | Articles and News |

  • Home
  • Anthropology
  • Archaeology
  • Evolution

    • Evolution / Charles Darwin

      Life on Earth evolved from a universal common ancestor approximately 3.8 billion years ago...

  • Paleontology

Fri06232017

Last update04:28:52 PM GMT

Back Evolution

Evolution

Evolution / Charles Darwin

Evolution is the change in the inherited characteristics of biological populations over successive generations. Evolutionary processes give rise to diversity at every level of biological organisation, including species, individual organisms and molecules such as DNA andproteins.

Life on Earth evolved from a universal common ancestor approximately 3.8 billion years ago. Repeated speciation and the divergence of life can be inferred from shared sets of biochemical and morphological traits, or by shared DNA sequences. These homologous traits and sequences are more similar among species that share a more recent common ancestor, and can be used...

Human Evolution

Timeline: Human Evolution

  55 million years ago (MYA)

First primitive primates evolve 8 - 6 MYA

First gorillas evolve. Later, chimp and human lineages diverge 5.8 MYA

Orrorin tugenensis, oldest human ancestor thought to have walked on two legs

 



Five skulls belonging to some ancestors and relatives of modern humans. From left to right, the skulls are: Australopithecus africanus (3-1.8 mya); Homo habilis (or H. rudolfensis, 2.1-1.6 mya); Homo erectus (or H...

The evolution of life

There are all sorts of ways to reconstruct the history of life on Earth. Pinning down when specific events occurred is often tricky, though. For this, biologists depend mainly on dating the rocks in which fossils are found, and by looking at the "molecular clocks" in the DNA of living organisms.

There are problems with each of these methods. The fossil record is like a movie with most of the frames cut out. Because it is so incomplete, it can be difficult to establish exactly...

New dinosaur fossil challenges bird flight origins theories

Reconstruction of Eosinopteryx. (Credit: Royal Belgian Institute of Natural Sciences)

Jan. 24, 2013 — The discovery of a new bird-like dinosaur from the Jurassic period challenges widely accepted theories on the origin of flight.

Co-authored by Dr Gareth Dyke, Senior Lecturer in Vertebrate Palaeontology at the University of Southampton, the paper describes a new feathered dinosaur about 30 cm in length which pre-dates bird-like dinosaurs that birds were long...

Brain of ampelosaur from Cuenca (Spain) revealed

Photographs of the braincase of the titanosaurian sauropod Ampelosaurus sp. (MCCM-HUE-8741) from the Cretaceous of Fuentes, Spain. In dorsal (A), ventral (B), rostral (C), caudal (D), and left lateral (E) views. Abbreviations: BO, basioccipital; BS, basisphenoid; EO-OP, exoccipital-opisthotic/otoccipital; F, frontal; LS, laterosphenoid; OS, orbitosphenoid; P, parietal; PR, prootic; SO, supraoccipital. Scale bar equals 5 cm. (Credit: Knoll et al. Neurocranial Osteology and Neuroanatomy...

New research throws doubt on earlier 'killer walrus' claims

Palaeontologists who examined a new fossil found in southern California have thrown doubt on earlier claims that a “killer walrus” once existed. (Credit: Copyright Robert W. Boessenecker)

 Palaeontologists who examined a new fossil found in southern California have thrown doubt on earlier claims that a "killer walrus" once existed.

A University of Otago geology PhD student Robert Boessenecker and co-author Morgan Churchill from the University of Wyoming have just published...

Great Oxidation Event: More oxygen through multicellularity

Nostochopis: multicellular cyanobacterium with algae-like growth. (Credit: UZH)

The appearance of free oxygen in Earth's atmosphere led to the Great Oxidation Event. This was triggered by cyanobacteria producing oxygen that was used by multicellular forms as early as 2.3 billion years ago. As evolutionary biologists from the Universities of Zurich and Gothenburg have shown, this multicellularity was linked to the rise in oxygen and thus played a significant role for life on Earth as it...

First Bird

First Bird
What was the earliest known bird?

Unexplained artifacts

unexplained artifacts
The 10 most amazing unexplained artifacts

Evolution

Timeline: Human Evolution

Biggest Dinosaurs

The 10 Biggest Dinosaurs

Fossils 

Fossil Formation: How Do Fossils Form?
 

Book review

Dinosaurs Encyclopedia

Book Review

Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages ... WRITTEN BY A PROFESSIONAL paleontologist specifically for young readers, this guide to the Dinosauria is packed...