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Fossil

All articles tagged with #fossil

Ancient fossil labeled oldest octopus debunked: a nautiloid, not an octopus
science1 day ago

Ancient fossil labeled oldest octopus debunked: a nautiloid, not an octopus

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.

via Yahoo News New Zealand|
#fossil#nautiloid#octopus
New imaging rewrites 'oldest octopus' claim: fossil is a nautiloid relative
science2 days ago

New imaging rewrites 'oldest octopus' claim: fossil is a nautiloid relative

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.

via CNN|
#fossil#nautiloid#paleontology
Oldest octopus claim debunked: fossil identified as a nautiloid relative
science2 days ago

Oldest octopus claim debunked: fossil identified as a nautiloid relative

A fossil once named as the world’s oldest octopus (Pohlsepia mazonensis) has been reclassified as a nautiloid relative (Paleocadmus pohli) after synchrotron imaging revealed a mollusk radula inconsistent with octopuses. Guinness World Records will remove the octopus title, highlighting how modern techniques can overturn long-held fossil identifications and reshape our view of cephalopod evolution.

via CBS News|
#cephalopod#fossil#nautiloid
Embedded Tooth in Edmontosaurus Skull Points to Face-Off With T. rex
science17 days ago

Embedded Tooth in Edmontosaurus Skull Points to Face-Off With T. rex

Scientists studying a Hell Creek Formation Edmontosaurus skull found a tooth lodged in its snout, a rare embedded-tooth fossil that lets researchers identify the attacker as Tyrannosaurus rex. CT scans show a frontal bite, the tooth’s serrations match T. rex, and bite marks suggest the predator continued feeding on the head after the kill, implying a direct encounter rather than distant scavenging.

via The Daily Galaxy|
#dinosaur#embedded-tooth#fossil
Ultra-Preserved Chicago Archaeopteryx Rewrites Flight Evolution
science20 days ago

Ultra-Preserved Chicago Archaeopteryx Rewrites Flight Evolution

A nearly intact specimen dubbed the Chicago Archaeopteryx, the smallest of its kind, was recovered from Solnhofen limestone and studied with CT scanning and UV light. The preserved skull, soft tissues, and long tertial feathers reveal how this early dinosaur may have used feathers to fly, providing strong evidence that flight evolved in multiple lineages of dinosaurs and reshaping our understanding of the origin of avian flight.

via Indian Defence Review|
#archaeopteryx#ct-scanning#flight-evolution
Ancient crustacean with formidable jaws unearthed in Early Triassic China
science22 days ago

Ancient crustacean with formidable jaws unearthed in Early Triassic China

Researchers describe Yunnanocyclus fortis, a near-complete Early Triassic crustacean from the Guiyang biota in Guizhou, China, notable for preserved appendages and unusually robust mandibles that are highly mineralized. Three specimens reveal a broader distribution for cyclidans, extending into eastern Tethys, and support an early diversification after the Permian–Triassic extinction.

via The Daily Galaxy|
#crustacean#fossil#guiyangbiota
Brazil unearths 20-meter giant dinosaur, Dasosaurus tocantinensis
science27 days ago

Brazil unearths 20-meter giant dinosaur, Dasosaurus tocantinensis

Brazilian researchers describe a new giant dinosaur, Dasosaurus tocantinensis, from fossils found near Davinópolis, Maranhão. A 1.5-meter femur suggests the animal was about 20 meters long, placing it among Brazil’s largest dinosaurs, and it appears to be the closest relative of Spain’s Garumbatitan morellensis, implying a European lineage that dispersed to South America about 130 million years ago before the Atlantic opened.

via Reuters|
#brazil#dinosaur#fossil
Arctic 23-Million-Year-Old Rhino Fossil Rewrites Rhino Evolution
science1 month ago

Arctic 23-Million-Year-Old Rhino Fossil Rewrites Rhino Evolution

A 23-million-year-old hornless rhino, Epiaceratherium itjilik, was unearthed in Canada’s High Arctic at Haughton Crater, with about 75% of its skeleton remarkably well preserved. The find offers new insights into Arctic ecosystems, rhino evolution, and long-distance migration via a North Atlantic land bridge, while recent advances in paleontology include recovering partial proteins from enamel in 2025, expanding methods for studying ancient mammals.

via Indian Defence Review|
#arctic#fossil#migration
Ancient Plant-Eater With Twisted Jaw Unearthed in Brazil
science1 month ago

Ancient Plant-Eater With Twisted Jaw Unearthed in Brazil

Paleontologists have named a new Permian tetrapod, Tanyka amnicola, from nine jaw fossils found in Brazil, notable for a bizarre twisted lower jaw and sideways denticles that suggest an early plant-based diet; the animal may have been up to about three feet long and lived in Gondwana-era lakes roughly 275 million years ago, making it a 'living fossil' in the stem tetrapod lineage.

via Good News Network|
#fossil#jaw#paleontology