All articles tagged with #fossil preservation
Scientists scanned a skin-preserved 289-million-year-old Captorhinus aguti fossil from Oklahoma with neutron CT, revealing the oldest known rib-based breathing system in amniotes and offering key insight into how early land-dwelling vertebrates evolved more efficient respiration.
At a coastal cliff in Santa Cruz, Portugal, researchers uncovered a block containing 10 Upper Jurassic dinosaur eggs (~150 million years old) preserved in three dimensions within granular sandstone, arranged in a natural nest pattern that suggests a genuine nesting site and limited disturbance. The team suspects carnivorous dinosaurs may have laid them, with potential embryonic remains to be confirmed by planned CT scans and microscopic analyses.
The Carreras Pampa site in Bolivia, the largest dinosaur tracksite ever found, contains nearly 18,000 tracks from around 70 million years ago, offering unique insights into dinosaur behavior and preservation due to exceptional environmental conditions that captured footprints, tail marks, and swimming traces of theropods, making it a significant paleontological discovery.
Researchers from the University of Chicago discovered remarkably detailed dinosaur mummies of Edmontosaurus, preserved through a process called clay templating that captured soft tissues, skin, and even hooves, providing unprecedented insights into the dinosaur's appearance and anatomy.
Scientists have discovered a 'mummy zone' near Lusk, Wyoming, where exceptionally preserved dinosaur fossils, including Edmontosaurus with soft tissue, suggest the potential for finding complete T. rex or Triceratops specimens, offering unprecedented insights into dinosaur appearance and evolution.
Researchers reexamined 100-year-old dinosaur fossils from Wyoming and discovered they are exceptionally well-preserved, retaining skin, spikes, and hooves, providing the most complete view of a large dinosaur to date and offering new insights into their appearance and soft tissue preservation.
Scientists have discovered exceptionally well-preserved dinosaur 'mummies' of Edmontosaurus annectens in Wyoming, revealing detailed skin, spikes, hooves, and soft tissue structures through clay templating, which offers new insights into dinosaur anatomy and preservation processes.
Scientists have discovered well-preserved dinosaur mummies from Wyoming that reveal some had hooves, a first in paleontology, providing new insights into dinosaur anatomy and appearance.
Researchers discovered rare dinosaur mummies in Wyoming, including a juvenile duck-billed dinosaur, preserved without skin but with skin impressions on clay, providing new insights into dinosaur appearance and preservation methods.
Scientists have discovered exceptionally preserved dinosaur mummies of Edmontosaurus that reveal the first known reptile hooves, providing new insights into dinosaur anatomy and death conditions, with these mummies offering rare soft tissue preservation and details about their last moments.
Scientists discovered a 520-million-year-old fossilized larva with its brain and guts intact, providing valuable insights into early arthropod evolution and challenging previous assumptions about the complexity of ancient creatures.
The July floods in Texas Hill Country uncovered 110-115 million-year-old dinosaur footprints, likely made by meat-eating dinosaurs similar to Acrocanthosaurus, with experts working to document and protect the site amid ongoing disaster recovery efforts.
Recent research has revised the understanding of fossil preservation in China's Yixian Formation, suggesting that the well-preserved dinosaur fossils were not the result of volcanic activity, as previously thought, but rather due to natural sediment processes like burrow collapses and rainy periods. This challenges the "Chinese Pompeii" theory and highlights the role of ordinary events in fossilization. The study used advanced dating techniques to determine that these fossils were preserved over a period of less than 93,000 years, during which sedimentation rapidly buried the remains in oxygen-free environments.
A new study challenges the long-held belief that the exceptionally preserved dinosaur fossils in China's Yixian Formation were due to volcanic activity. Instead, researchers suggest these fossils, dating back 125.8 million years, were preserved by natural events like burrow collapses during rainy periods, rather than catastrophic volcanic events. This finding refutes previous theories of preservation by lahars or pyroclastic flows, as the fossils show no signs of such violent processes. The study highlights the importance of understanding ordinary events in fossil preservation.
The Yixian Formation in China, long thought to preserve dinosaur fossils through volcanic ash similar to Pompeii, may have actually preserved them through rapid sedimentation and burrow collapses. A new study suggests that wet weather led to quick sediment buildup, sealing out oxygen and preserving soft tissues. This challenges previous theories of preservation by volcanic lahars or pyroclastic flows, as the fossils lack signs of such violent events. The findings highlight a tendency to attribute extraordinary causes to ordinary events when origins are unclear.