1. Paleontology

    Telltale Dino Heart Hints at Warm Blood

    A recently discovered fossil dinosaur heart is more like the heart of birds and mammals than that of crocodiles, providing further evidence that dinosaurs may have been warm-blooded.

  2. Paleontology

    Trilobites to Go

    Extinct even before dinosaurs existed on Earth but extensively preserved in the fossil record, the eight orders of trilobites (more than 15,000 species) live on via this large, informative Web site, created by zoologist and amateur trilobite enthusiast Sam Gon III. The site provides a gallery of images, a glossary of terms, and much more. […]

  3. Paleontology

    Dinosaurs, party of six, meat eating

    The bones of six carnivorous dinosaurs discovered in a fossil bed in Patagonia may indicate that big, meat-eating dinosaurs were social creatures.

  4. Paleontology

    Fossil gets a leg up on snake family tree

    A 95-million-year-old fossil snake with legs may be an advanced big-mouthed snake, not a primitive ancestor.

  5. Paleontology

    Salvaged DNA adds to Neandertals’ mystique

    Researchers who isolated a sample of Neandertal mitochondrial DNA say that it provides no evidence that Neandertals contributed to modern human evolution.

  6. Paleontology

    Veggie Bites: Fossil suggests carnivorous dinosaurs begat vegetarian kin

    Chinese rocks have yielded fossil remains of a creature that had rodentlike incisors and a hefty overbite, providing the first distinct dental evidence for plant-eating habits among theropod dinosaurs.

  7. Paleontology

    Sea Dragons

    About 235 million years ago, as the earliest dinosaurs stomped about on land, some of their reptilian relatives slipped back into the surf, took on an aquatic lifestyle, and became ichthyosaurs—Greek for fish lizards.

  8. Paleontology

    Bone Crushers: Teeth reveal changing times in the Pleistocene

    Tooth-fracture incidence among dire wolves in the fossil record can indicate how much bone the carnivores crunched and, therefore, something about the ecology of their time.

  9. Paleontology

    Unknown creature made birdlike tracks

    Paleontologists have found a multitude of birdlike footprints left by a yet undiscovered creature in rocks more than 60 million years older than Archaeopteryx, the first bird to have left fossils of its body parts.

  10. Paleontology

    Skimming the Surface: Flying reptile may have scooped its meals

    Fossils unearthed in Brazil strengthen the idea that some species of ancient flying reptiles snatched their meals on the fly, snapping up fish as they swooped low over the water's surface.

  11. Paleontology

    Fossil leaves yield extinction clues

    Analyses of fossil leaves provide more evidence that the mass extinctions that wiped out the dinosaurs 65 million years ago were sudden and probably brought about by an extraterrestrial impact.

  12. Paleontology

    Into the Gap: Fossil find stands on its own four legs

    A fossil originally misidentified as an ancient fish turns out to be the nearly intact remains of a four-limbed creature that lived during an extended period noted for its lack of fossils of land animals.