The team later reported more than 1,000 paddle-shaped fossil marks spread across a limestone surface of about 2,150 square feet. That is roughly the size of a large family home\u2019s floor plan, except this \u201cfloor\u201d was once a seabed and is now part of a steep rock face.<\/p>\n\n\n\n The tracks date to the Late Cretaceous, part of the same broad period when many famous dinosaurs still lived on land. The Cretaceous Period began about 145 million years ago and ended 66 million years ago, according to the Natural History Museum in London.<\/p>\n\n\n\n But this was not a beach scene. The rock layer, known as Scaglia Rossa limestone, formed from deep marine sediment, and tiny fossils<\/a> in the samples point to a seafloor environment far below the surface. In practical terms, the turtles were not crawling across sand like today\u2019s nesting females. They were likely moving through soft mud underwater.<\/p>\n\n\n\n The marks are trace fossils<\/a>, meaning they record what an animal did rather than preserving the animal itself. Footprints, burrows, and scrape marks all fall into that category. They can be messy, but they can also catch a moment that bones never could.<\/p>\n\n\n\n The researchers considered several possible makers, including plesiosaurs, mosasaurs, and sea turtles. Sea turtles are the leading suspect because some living species gather in groups, while the other two marine reptiles are generally thought to have been more solitary. Still, the identification is not perfectly settled, because no sea turtle bones from the same place have confirmed the match.<\/p>\n\n\n\n So why would so many animals leave marks in the same direction? The study\u2019s main idea is surprisingly dramatic. An earthquake shook the ancient seafloor, startled the animals, and sent them rushing toward deeper water.<\/p>\n\n\n\n Then came the second part of the same event. The quake likely triggered an underwater avalanche of fine mud and carbonate sediment, which buried the fresh tracks before currents or small seafloor animals could erase them. Alessandro Montanari, director of the Coldigioco Geological Observatory<\/a>, told Live Science that worms, clams, and other bottom-dwelling organisms usually \u201cgarden the seafloor.\u201d This time, the garden was covered too fast.<\/p>\n\n\n\n There is a reason scientists are cautious here. Michael Benton, a vertebrate paleontology professor at the University of Bristol who was not involved in the study, told Live Science that the geological setting is clear, but he questioned whether sea turtles made the tracks.<\/p>\n\n\n\n His concern is simple enough to picture. Modern sea turtles usually swim with a smooth, wing-like motion, almost like flying underwater. The fossil marks seem to show paired forelimb movements pressing into the sediment together, which may not perfectly match that style. The trouble is, ancient panic does not always leave a tidy signature.<\/p>\n\n\n\n Even with that uncertainty, the find gives scientists a rare kind of evidence. It may show how marine animals<\/a> reacted to a sudden natural disaster in real time, or as close to real time as the rock record gets.<\/p>\n\n\n\n That is different from finding a shell or a skeleton. A body fossil tells us what an animal looked like. A trackway can hint at how it moved, where it was going, and what was happening around it. In this case, the surrounding rock points to a shaken seafloor and rapid burial.<\/p>\n\n\n\n The story also says something about science itself. Not every discovery begins with a planned expedition, a lab instrument, or a university grant. Sometimes it starts with climbers noticing that a wall looks strange.<\/p>\n\n\n\n That is why accidental finds can matter so much. A few photographs from a rock face led researchers to a scene that may connect animal behavior, earthquakes, and deep-sea geology in one frozen moment. <\/p>\n\n\n\n The main study has been published in the journal Cretaceous Research<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" The discovery matters because fossils usually preserve bodies, shells, or bones. This one appears to preserve behavior. A slab that … <\/p>\n![\"Fossil](\"https:\/\/www.ecoticias.com\/en\/wp-content\/uploads\/2026\/05\/monte-conero-fossil-tracks-sea-turtle-earthquake.jpg\" "\\"\\"")
A seafloor, not a shoreline<\/h2>\n\n\n\n
Read More: Four puppy siblings were found huddled in a snow-covered garbage dump in La Loche, Saskatchewan, using scraps of cardboard for warmth, and the rescue turned when a Good Samaritan finally spotted them and called the local SPCA<\/a><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
Why turtles are the leading suspect<\/h2>\n\n\n\n
The earthquake clue<\/h2>\n\n\n\n
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Not every expert is convinced<\/h2>\n\n\n\n
Why this fossil scene matters<\/h2>\n\n\n\n
Read More: Astronomers claim they have found Venus\u2019 first volcanic cave, and the idea of a natural shelter on a hellish planet forces new questions about what is happening under the surface<\/a><\/h3>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
A chance discovery with a long afterlife<\/h2>\n\n\n\n