{"id":2416,"date":"2026-10-01T01:20:00","date_gmt":"2026-09-30T16:20:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-10-01-dinosaur-beach-seafood-en\/"},"modified":"2026-10-01T01:45:14","modified_gmt":"2026-09-30T16:45:14","slug":"2026-10-01-dinosaur-beach-seafood-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-10-01-dinosaur-beach-seafood-en\/","title":{"rendered":"Marine food reached dinosaur food webs on ancient beaches, tooth isotopes show"},"content":{"rendered":"

2026-10-01 01:20 KST<\/strong><\/p>\n

About 75 million years ago, marine material washed onto beaches along North America\u2019s inland sea appears to have entered terrestrial food webs.<\/p>\n

The evidence is a difference in carbon isotopes preserved in tooth enamel, not a direct observation of which dinosaur ate which seafood.<\/p>\n

How coast and inland were compared<\/h2>\n

Researchers compared teeth of dinosaurs, crocodilians, turtles and fish from coastal deposits with fossils farther inland. Enamel carbon isotopes record the broad carbon sources in an animal\u2019s diet over time.<\/p>\n

Why beach carrion is proposed<\/h2>\n

A marine signal appeared in both herbivores and predators near the coast, suggesting the resource entered low in the food chain. Animals may have eaten stranded fish or invertebrates, or eaten other animals that had consumed them.<\/p>\n

\"Marine
This AI-generated image explains the topic; it is not a photograph of an actual event, observation or field site.<\/figcaption><\/figure>\n

What the evidence cannot show<\/h2>\n

Isotopes cannot identify the prey species, frequency of feeding or a behavior scene. Coastal plants and water cycles may also affect signals, so other sites and time periods need testing.<\/p>\n

Why the finding matters<\/h2>\n

Reconstructing dinosaur ecosystems as purely terrestrial can miss nutrients arriving from the sea. The next test is whether the same pattern occurs at other latitudes and in Jurassic or early Cenozoic coasts.<\/p>\n

Primary source and independent checks<\/h2>\n

Primary source: Frontiers in Ecology and Evolution \uc6d0 \ub17c\ubb38<\/a><\/p>\n

Institutional explanation: Frontiers \uacf5\uc2dd \uc5f0\uad6c \uc124\uba85<\/a><\/p>\n

Independent check: EurekAlert \ub3c5\ub9bd \ubc30\ud3ec \ud655\uc778<\/a><\/p>\n

Read in other languages<\/h2>\n

\ud55c\uad6d\uc5b4<\/a> \u00b7 English<\/a> \u00b7 Espa\u00f1ol<\/a> \u00b7 \u65e5\u672c\u8a9e<\/a> \u00b7 Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Teeth from dinosaurs, crocodilians, turtles and fish on a Cretaceous North American coast carry evidence that marine carbon entered land food webs. The study does not prove a particular dinosaur hunted fish.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2416","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}