https://www.smithsonianmag.com/rss/tag/paleontology/RSS feed for PaleontologyenFri, 29 May 2026 15:53:48 +0000https://www.smithsonianmag.com/smart-news/tyrannosaurus-rex-and-other-terrifying-predatory-dinosaurs-had-itty-bitty-arms-scientists-may-have-finally-figured-out-why-180988803/A new study suggests that certain theropods—two-legged, mostly meat-eating dinosaurs—had shrunken forelimbs as an evolutionary trade-off for their strong skullsFri, 29 May 2026 15:53:48 +0000https://www.smithsonianmag.com/smart-news/tyrannosaurus-rex-and-other-terrifying-predatory-dinosaurs-had-itty-bitty-arms-scientists-may-have-finally-figured-out-why-180988803/https://www.smithsonianmag.com/science-nature/what-was-the-biggest-dinosaur-fragmentary-fossils-make-it-hard-to-tell-180988840/Pinning down the most titanic of the large sauropod dinosaurs is not an easy task, since the odds were generally against the biggest ones being buried and preservedThu, 28 May 2026 14:58:30 +0000https://www.smithsonianmag.com/science-nature/what-was-the-biggest-dinosaur-fragmentary-fossils-make-it-hard-to-tell-180988840/https://www.smithsonianmag.com/smart-news/paleontologists-discover-an-ancient-marine-reptile-theyve-dubbed-the-t-rex-of-the-sea-crowning-another-king-of-the-cretaceous-180988792/Scientists figured out that the predators were lumped in with a previously named mosasaur species. The new one, called Tylosaurus rex, could grow to 43 feet long, about the length of a school busFri, 22 May 2026 21:00:26 +0000https://www.smithsonianmag.com/smart-news/paleontologists-discover-an-ancient-marine-reptile-theyve-dubbed-the-t-rex-of-the-sea-crowning-another-king-of-the-cretaceous-180988792/https://www.smithsonianmag.com/smart-news/a-man-spotted-strange-looking-rocks-near-a-pond-in-thailand-they-turned-out-to-be-the-bones-of-a-massive-new-dinosaur-species-180988744/Paleontologists have dubbed the long-necked, plant-eating creature "Nagatitan chaiyaphumensis." It's the 14th named dinosaur from Thailand, and it might be the biggest one ever found in Southeast AsiaFri, 15 May 2026 14:00:00 +0000https://www.smithsonianmag.com/smart-news/a-man-spotted-strange-looking-rocks-near-a-pond-in-thailand-they-turned-out-to-be-the-bones-of-a-massive-new-dinosaur-species-180988744/https://www.smithsonianmag.com/smart-news/east-africa-might-break-off-from-the-continent-sooner-than-scientists-thought-and-a-new-ocean-may-fill-the-gap-180988659/A new study suggests that a rift in Kenya and Ethiopia has reached a critical stage in the split-up process, and that water may flood it in a few million yearsFri, 08 May 2026 18:48:52 +0000https://www.smithsonianmag.com/smart-news/east-africa-might-break-off-from-the-continent-sooner-than-scientists-thought-and-a-new-ocean-may-fill-the-gap-180988659/https://www.smithsonianmag.com/smart-news/this-bone-crunching-octopus-was-nearly-the-size-of-a-semitruck-and-may-have-feasted-on-giant-reptiles-100-million-years-ago-180988616/The massive invertebrates may have been top predators, according to an analysis of their fossilized jaws. The work suggests that ancient oceans weren't completely ruled by spine-bearing creatures, as previously thoughtMon, 27 Apr 2026 16:04:46 +0000https://www.smithsonianmag.com/smart-news/this-bone-crunching-octopus-was-nearly-the-size-of-a-semitruck-and-may-have-feasted-on-giant-reptiles-100-million-years-ago-180988616/https://www.smithsonianmag.com/smart-news/this-medieval-castle-sits-atop-a-prehistoric-time-capsule-new-excavations-could-reveal-the-history-of-neanderthals-in-britain-180988562/In a cave tucked beneath the Welsh landmark, archaeologists have found evidence of human and animal visits over the past 120,000 years. Now, they're starting a five-year excavation projectMon, 20 Apr 2026 14:00:00 +0000https://www.smithsonianmag.com/smart-news/this-medieval-castle-sits-atop-a-prehistoric-time-capsule-new-excavations-could-reveal-the-history-of-neanderthals-in-britain-180988562/https://www.smithsonianmag.com/science-nature/the-hell-creek-formation-is-north-americas-legendary-boneyard-see-the-top-five-discoveries-found-in-the-iconic-fossil-bed-180988545/From preserved plants to T. rex, the material found in these Late Cretaceous rocks has resulted in countless breakthroughs for paleontologistsWed, 15 Apr 2026 11:30:00 +0000https://www.smithsonianmag.com/science-nature/the-hell-creek-formation-is-north-americas-legendary-boneyard-see-the-top-five-discoveries-found-in-the-iconic-fossil-bed-180988545/https://www.smithsonianmag.com/smart-news/this-300-million-year-old-mummified-fossil-reveals-the-origins-of-breathing-in-amniotes-180988521/Unusually well-preserved fossils have provided the earliest known evidence of a land vertebrate that could pump air in and out of its chest using muscles between the ribs—the same strategy used by modern mammals, reptiles and birdsMon, 13 Apr 2026 20:06:58 +0000https://www.smithsonianmag.com/smart-news/this-300-million-year-old-mummified-fossil-reveals-the-origins-of-breathing-in-amniotes-180988521/https://www.smithsonianmag.com/smart-news/after-nearly-80-years-of-doubt-scientists-say-a-spear-lodged-between-elephant-ribs-offers-evidence-that-neanderthals-hunted-big-game-180988522/In 1948, amateur archaeologists unearthed the remains, which should have shifted researchers' views of Neanderthals. But poor documentation sowed skepticism in the scientific communityFri, 10 Apr 2026 16:05:15 +0000https://www.smithsonianmag.com/smart-news/after-nearly-80-years-of-doubt-scientists-say-a-spear-lodged-between-elephant-ribs-offers-evidence-that-neanderthals-hunted-big-game-180988522/https://www.smithsonianmag.com/smart-news/this-fossil-held-the-world-record-for-the-earliest-known-octopus-turns-out-its-not-an-octopus-after-all-180988511/New research suggests the 300-million-year-old specimen is actually a relative of the nautilusWed, 08 Apr 2026 21:07:00 +0000https://www.smithsonianmag.com/smart-news/this-fossil-held-the-world-record-for-the-earliest-known-octopus-turns-out-its-not-an-octopus-after-all-180988511/https://www.smithsonianmag.com/smart-news/new-fossils-discovered-in-china-hint-that-complex-life-evolved-millions-of-years-earlier-than-scientists-thought-180988490/The assemblage suggests that the ancestors of some of today's animal groups may have arisen before the famed Cambrian explosionTue, 07 Apr 2026 19:32:43 +0000https://www.smithsonianmag.com/smart-news/new-fossils-discovered-in-china-hint-that-complex-life-evolved-millions-of-years-earlier-than-scientists-thought-180988490/https://www.smithsonianmag.com/smart-news/this-500-million-year-old-fossil-of-a-claw-bearing-predator-uncovers-the-origins-of-spiders-scorpions-and-other-arthropods-180988477/A new analysis of a specimen found more than 40 years ago reveals the oldest known chelicerate, defined by its pair of pincer-like appendagesThu, 02 Apr 2026 20:22:13 +0000https://www.smithsonianmag.com/smart-news/this-500-million-year-old-fossil-of-a-claw-bearing-predator-uncovers-the-origins-of-spiders-scorpions-and-other-arthropods-180988477/https://www.smithsonianmag.com/smart-news/these-snorkeling-scientists-stumbled-upon-an-surprising-trove-of-fossils-in-a-texas-water-cave-180988464/They found remains of animals that have never been uncovered in Central Texas. The fossils hint that the region was warm, moist and forested 100,000 years agoWed, 01 Apr 2026 14:00:00 +0000https://www.smithsonianmag.com/smart-news/these-snorkeling-scientists-stumbled-upon-an-surprising-trove-of-fossils-in-a-texas-water-cave-180988464/