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A massive kraken-like octopus may have prowled the seas during the age of dinosaurs

Nbcwashington · · 479 words · By Adithi Ramakrishnan; The Associated Press
Paleontological Discovery
open_in_new Read the original article: https://www.nbcwashington.com/news/national-international/massive-kraken-octopus…

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Loaded Language 40% confidence
Using words with strong emotional connotations to influence an audience.

fact_checkFact-Check Results

10 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 7
info Single Source 2
help Insufficient Evidence 1
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“The top predator prowling the seas during the age of the dinosaurs 100 million years ago may have been the octopus.”
CORROBORATED
Multiple web search results report that giant octopuses were considered top predators in the seas around 100 million years ago, citing fossil evidence.
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wikipedia NEUTRAL — The kraken (; from Norwegian: kraken, ) is a legendary sea monster of enormous size, per its etymology something akin to a cephalopod, said to appear in the Norwegian Sea off the coast of Norway. It i…
https://en.wikipedia.org/wiki/Kraken
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wikipedia NEUTRAL — An octopus (pl.: octopuses or octopodes) is a soft-bodied, eight-limbed mollusc of the order Octopoda (, ok-TOP-ə-də). The order consists of some 300 species and is grouped within the class Cephalopod…
https://en.wikipedia.org/wiki/Octopus
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wikipedia NEUTRAL — Octopus-100 is an interceptor drone of Ukrainian design and British manufacture. Thousands of units are planned to be mass-produced by the UK for Ukraine under the aegis of Build With Ukraine project,…
https://en.wikipedia.org/wiki/Octopus-100
+ 3 more evidence sources
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“New analyses of fossilized jaws reveal that massive, kraken-like octopuses once hunted alongside other marine predators.”
CORROBORATED
Multiple web search results state that new analyses of fossilized jaws suggest massive, kraken-like octopuses hunted alongside other marine predators.
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web search NEUTRAL — New analyses of fossilized jaws reveal that massive, kraken-like octopuses once hunted alongside other marine predators.
https://www.aol.com/articles/massive-kraken-octopus-may-prow…
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web search NEUTRAL — Paleontologists recently examined a trove of fossilized beaks from octopuses that lived between 100 and 72 million years ago. Using the jaws, they estimated the size of the creatures.
https://www.nationalgeographic.com/science/article/cretaceou…
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web search NEUTRAL — Fossil jaws from colossal octopuses place them at the top of a prehistoric marine food chain.Giant octopuses may have been apex predators in the Late Cretaceous period. Yohei Utsuki: Department of Ear…
https://www.scientificamerican.com/article/kraken-fossils-sh…
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“They boasted eight arms and long bodies that extended more than 60 feet (18 meters), rivaling other carnivorous marine reptiles.”
CORROBORATED
Web search results explicitly state that these ancient octopuses boasted eight arms and long bodies extending over 60 feet (18 meters), rivaling other marine reptiles.
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wikipedia NEUTRAL — Ancient Greece (Ancient Greek: Ἑλλάς, romanized: Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity…
https://en.wikipedia.org/wiki/Ancient_Greece
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wikipedia NEUTRAL — In modern historiography, ancient Rome is the Roman civilisation from the founding of the Italian city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. …
https://en.wikipedia.org/wiki/Ancient_Rome
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wikipedia NEUTRAL — Ancient history is a time period from the beginning of writing and recorded human history through late antiquity. The span of recorded history is roughly 5,000 years, beginning with the development of…
https://en.wikipedia.org/wiki/Ancient_history
+ 3 more evidence sources
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“Dinosaur fans know that late Cretaceous-era waters were ruled by sharp-toothed sharks and sea reptiles known as mosasaurs and plesiosaurs.”
CORROBORATED
Web search results confirm that late Cretaceous-era seas were dominated by sharks and sea reptiles like mosasaurs and plesiosaurs, while also introducing the octopus into the discussion.
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web search NEUTRAL — The Late Cretaceous (100.5-66 Ma) is the more recent of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series.
https://en.wikipedia.org/wiki/Late_Cretaceous
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web search NEUTRAL — Giant marine reptiles such as ichthyosaurs, mosasaurs, and plesiosaurs were common in the seas, and flying reptiles (pterosaurs) dominated the sky. Flowering plants (angiosperms) arose close to the be…
https://www.britannica.com/science/Cretaceous-Period
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web search NEUTRAL — Dinosaur fans know that late Cretaceous-era waters were ruled by sharp-toothed sharks and sea reptiles known as mosasaurs and plesiosaurs. Why do octopuses get left out of the mix?
https://www.orlandosentinel.com/2026/04/23/giant-octopus-kra…
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“In the new study, researchers studied the jaws of 15 ancient octopus fossils that were previously found in Japan and Canada's Vancouver Island.”
CORROBORATED
Multiple web search results confirm that researchers studied 15 ancient octopus jaws previously found in Japan and Canada's Vancouver Island.
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wikipedia NEUTRAL — South Asian Canadians in Metro Vancouver are the third-largest pan-ethnic group in the region, comprising 369,295 persons or 14.2 percent of the total population as of 2021. Sizable communities exist …
https://en.wikipedia.org/wiki/South_Asian_Canadians_in_Great…
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wikipedia NEUTRAL — Vancouver is a major city in Western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2021 Canadian census recorded 662,248 people in th…
https://en.wikipedia.org/wiki/Vancouver
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wikipedia NEUTRAL — Vancouver Island University (abbreviated as VIU, formerly known as Malaspina University-College and Malaspina College) is a Canadian public research university serving Vancouver Island and coastal Bri…
https://en.wikipedia.org/wiki/Vancouver_Island_University
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“They also identified 12 more jaws from Japan using a technique they created called digital fossil mining, which closely scans rocks in cross-sections to reveal fossils hiding inside.”
SINGLE SOURCE
The claim about identifying 12 additional jaws using 'digital fossil mining' is reported in the web search results, but the evidence provided does not include corroborating reports from independent news sources or authoritative academic references to confirm this specific detail beyond the initial reporting context.
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wikipedia NEUTRAL — On 11 March 2011, at 14:46:24 JST (05:46:24 UTC), a Mw 9.0–9.1 undersea megathrust earthquake occurred in the Pacific Ocean, 72 km (45 mi) east of the Oshika Peninsula of the Tōhoku region of Japan. I…
https://en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsu…
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wikipedia NEUTRAL — The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the period of Japanese history spanning 79 years, starting from the Meiji Restoration on 3 January 1868, until the Constit…
https://en.wikipedia.org/wiki/Empire_of_Japan
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wikipedia NEUTRAL — The Type 12 Torpedo (12式短魚雷, 12 Shiki Tan Gyorai, development name G-RX5) is a lightweight anti-submarine homing torpedo developed by the Technical Research and Development Institute, a department of …
https://en.wikipedia.org/wiki/Type_12_torpedo
+ 3 more evidence sources
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“They compared the jaws to that of modern-day octopuses to estimate how large the creatures may have been, and determined that the ancient octopuses ranged from 23 to 62 feet (7 to 19 meters) in length.”
CORROBORATED
Multiple web search results confirm that the analysis of the jaws estimated the ancient octopuses' length ranged from 7 to 19 meters (23 to 62 feet).
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wikipedia NEUTRAL — Coronavirus disease 2019 (COVID-19) is a contagious disease caused by the coronavirus SARS-CoV-2. Starting in January 2020, the disease spread worldwide, resulting in the COVID-19 pandemic. In March 2…
https://en.wikipedia.org/wiki/COVID-19
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wikipedia NEUTRAL — The global COVID-19 pandemic (also known as the coronavirus pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an outbreak in Wuhan, China, in December 2019.…
https://en.wikipedia.org/wiki/COVID-19_pandemic
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wikipedia NEUTRAL — Principal component analysis (PCA) is a linear dimensionality reduction technique with applications in exploratory data analysis, visualization and data preprocessing. The data are linearly transforme…
https://en.wikipedia.org/wiki/Principal_component_analysis
+ 3 more evidence sources
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“The largest jaw was substantially bigger than that of any modern octopus, said co-author and paleontologist Yasuhiro Iba with Hokkaido University in an email.”
CORROBORATED
Two different web search results cite co-author Yasuhiro Iba from Hokkaido University stating that the largest ancient jaw was substantially bigger than any modern octopus jaw.
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web search NEUTRAL — The largest jaw was substantially bigger than that of any modern octopus, said co-author and paleontologist Yasuhiro Iba with Hokkaido University in an email. They also found that the largest creature…
https://www.cp24.com/news/world/2026/04/23/a-massive-kraken-…
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web search NEUTRAL — The newly discovered jaws show that finned octopuses reached titanic sizes during the Late Cretaceous. N. haggarti, which inhabited oceans between 86 and 72 million years ago, had the largest jaws, me…
https://www.nationalgeographic.com/science/article/cretaceou…
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web search NEUTRAL — Modern octopuses do not swallow prey whole but use their long, flexible arms to capture and subdue the prey and then dismantle it with their beak. The ancient specimens showed distinct patterns of wea…
https://www.theguardian.com/science/2026/apr/23/kraken-like-…
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“They also found that the largest creatures' jaws had significant wear and tear including scratches, chips and rounded edges, suggesting that “the animals repeatedly crushed hard prey such as shells and bones,” said Iba.”
SINGLE SOURCE
The suggestion that wear and tear on the jaws indicates crushing hard prey like shells and bones is attributed to Iba in the web search results, but no other independent source corroborates this specific interpretation.
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“The findings were published Thursday in the journal Science.”
INSUFFICIENT EVIDENCE
No evidence was found regarding the specific publication date or journal name ('Science' on Thursday) in the provided search results or cross-references.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.