All articles tagged with #synchrotron imaging
Using synchrotron imaging, researchers reclassified Pohlsepia mazonensis as a nautiloid relative Paleocadmus pohli, overturning the fossil's status as the oldest octopus and pushing crown octopus divergence to the Jurassic, while highlighting the oldest nautiloid soft-tissue preservation in the Mazon Creek deposits.
A 300-million-year-old fossil long celebrated as the world’s oldest octopus (Pohlsepia mazonensis) has been reidentified as a nautiloid relative after synchrotron imaging revealed a radula with tooth-like structures that rule out an octopus. The discovery also preserves the oldest known nautiloid soft tissue and pushes octopus origins to the Jurassic, prompting a reevaluation of cephalopod evolution.
Researchers using synchrotron X-rays found preserved, iron-rich blood vessel structures in a fractured rib of Scotty, the largest-known Tyrannosaurus rex. The vessels illuminate the healing process from 66 million years ago and offer new insight into dinosaur biology, even as dinosaur DNA remains out of reach.
Synchrotron imaging of the Mazon Creek fossil Pohlsepia mazonensis revealed hidden teeth matching Paleocadmus pohli, proving it’s a nautiloid relative rather than an octopus. This pushes octopus origins to the Jurassic and marks the oldest nautiloid soft-tissue fossil, overturning a 26-year-old misidentification from Illinois.
A 300-million-year-old fossil once hailed as the world’s oldest octopus has been reclassified as a nautiloid after new analyses, including synchrotron imaging and detailed geochemistry. The researchers found a radula with many rows of teeth inconsistent with octopuses, explaining why the fossil looked octopus-like as it decomposed. Discovered at the Mazon Creek site near Chicago, Pohlsepia mazonensis’ true identity underscores how advanced technologies are reshaping paleontology by revealing hidden anatomy that old methods missed.
A 328-million-year-old fossil once hailed as the oldest octopus, Pohlsepia mazonensis, has been reclassified after researchers used cutting-edge techniques including synchrotron imaging to uncover features inconsistent with octopuses (such as multiple radula teeth). The findings show it is actually a decomposed nautiloid, a relative of modern nautiluses, highlighting how new technologies are advancing paleontology and revising our view of ancient cephalopods.
New synchrotron imaging of the 300-million-year-old fossil Pohlsepia mazonensis shows it is a nautiloid relative, not an octopus. The fossil reveals a nautilus-like radula with 11 tooth-like elements per row and other features, leading researchers to reclassify the find and push octopus origins into the Mesozoic era (late Jurassic at latest). Published in Proceedings of the Royal Society B, the study also provides the oldest soft-tissue evidence of a nautiloid, reshaping our understanding of cephalopod evolution.
The article presents a novel non-destructive synchrotron imaging study of the fossil Norselaspis glacialis, revealing new insights into the head-trunk interface and circulatory system of early vertebrates, bridging features between jawless and jawed vertebrates, and challenging previous reconstructions of its anatomy.