Tag Archives: record
Bacteria Preserve Record of Earth’s Magnetic Fields
Magnetic minerals, such as the dark stripes of magnetite seen here in beach sand in India, can form layers in sediments. Credit: Mark A. Wilson via Wikimedia Tiny yet stable magnetized particles created by microbes long ago could help scientists … Continue reading
First-Ever Fossil Record Facial Tumor Discovered in a Dinosaur
photo credit: University of Southampton. An adult Telmatosaurus (NHMUK R.3386) Scientists diagnose a 69 million-year-old dwarf duck-billed dinosaur from Transylvania. For the first time, evidence of a facial tumor has been discovered in a fossil. That fossil was a jaw … Continue reading
Warming pulses in ancient climate record link volcanoes, asteroid impact and dinosaur-killing mass extinction
A new reconstruction of Antarctic ocean temperatures around the time the dinosaurs disappeared 66 million years ago supports the idea that one of the planet’s biggest mass extinctions was due to the combined effects of volcanic eruptions and an asteroid … Continue reading
Minerals reveal record of magnetic fields
Representative Image Fresh discoveries about common minerals are helping scientists better understand the nature of Earth?s magnetic fields. Hi-tech imaging technology is enabling researchers to study tiny magnetic spirals in grains of the naturally occurring mineral magnetite, found in rocks … Continue reading
Fossil record disappears at different rates
Considerably more of the fossil record of creatures such as mammoths, mastodons, camels, horses and ground sloths has been lost in what is now the continental United States and South America than in Alaska and areas near the Bering Strait. … Continue reading
Fossil record disappears at different rates
Considerably more of the fossil record of creatures such as mammoths, mastodons, camels, horses and ground sloths has been lost in what is now the continental United States and South America than in Alaska and areas near the Bering Strait. … Continue reading
Study: Fossil record disappears at different rates
Statistical analysis by University of Wyoming researchers shows wide variation in the rates at which the bones of ancient animals in the Americas have been lost. read more (e) Science News – Paleontology & Archaeology
Fossil record disappears at different rates
These are the remains of a mammoth that was killed by humans near LaPrele Creek in Converse County, Wyo., about 13,000 years ago. New University of Wyoming research shows wide variation in the rates at which the bones of ancient … Continue reading
Fossil record disappears at different rates
Considerably more of the fossil record of creatures such as mammoths, mastodons, camels, horses and ground sloths has been lost in what is now the continental United States and South America than in Alaska and areas near the Bering Strait. … Continue reading
Ancient rocks record first evidence for photosynthesis that made oxygen
Aaron Satkoski, a scientist in the UW-Madison Geoscience Department, holds a sample sawn from a 3.23-billion-year-old rock core sample found in South Africa. The bands show different types of sediment falling to the ocean floor and solidifying into rock. The … Continue reading