Heron-like, fish-eating dinosaur from 70 million years ago discovered in Argentina

Phys · 🇺🇸 public United States · May 28, 2026 · 963 words · By Taylor; Francis

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What to know about Heron-like, fish-eating dinosaur from 70 million years ago discovered in Argentina

Paleontologists have identified a new species of fish-eating dinosaur, Kank australis, from the Late Cretaceous period in southern Patagonia. The discovery, detailed in the Journal of Vertebrate Paleontology, provides insights into the evolutionary distribution of unenlagiid dinosaurs and their ecological roles.

Propaganda risk 0%

Claims checked 16

Techniques found 0

Topics 0

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center75%

Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Heron-like, fish-eating dinosaur from 70 million years ago discovered in Argentina Lisa Lock Scientific Editor Robert Egan Associate Editor A new raptor-like dinosaur from some 70 million years ago that ate fish and behaved like modern herons has been…

Why it matters

The new species, which has been named Kank australis, was identified based on the discovery of fossil remains including teeth, vertebrae, and toe bones.

Common ground

australis is an unenlagiid, a family of small-to-medium sized theropod dinosaurs whose members have been unearthed from Late Cretaceous deposits in South America, Antarctica, Australia, and Madagascar.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Follow-up questions

What concrete event or decision sits underneath the headline: Heron-like, fish-eating dinosaur from 70 million years ago discovered in Argentina?
What evidence would most clearly confirm or weaken the claim that It is also smaller and more gracile compared to other unenlagiids from the end of the Cretaceous, such as Austroraptor cabazai, a giant (about 5 meters long) unenlagiine from northern Patagonia?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://phys.org/news/2026-05-heron-fish-dinosaur-million-years.html

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Propaganda Score

confidence: 100%

Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 16 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

schedule Pending 6

check_circle Corroborated 4

info Single Source 3

help Insufficient Evidence 2

verified Verified By Reference 1

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Claim 1: “It is also smaller and more gracile compared to other unenlagiids from the end of the Cretaceous, such as Austroraptor cabazai, a giant (about 5 meters long) unenlagiine from northern Patagonia.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 2: “Kank coexisted with larger carnivores such as Maip macrothorax, a formidable megaraptorid dinosaur more than 10 meters long”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 3: “A new raptor-like dinosaur from some 70 million years ago that ate fish and behaved like modern herons has been unearthed from southern Patagonia.”

CORROBORATED

Multiple independent web sources confirm the discovery of a fish-eating, heron-like dinosaur from approximately 70 million years ago in southern Patagonia.

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wikipedia NEUTRAL — Yvon Chouinard (born November 9, 1938) is an American rock climber, environmentalist, and businessman. His company, Patagonia, sells outdoor products, outerwear, and food. He was named one of the 100 …
https://en.wikipedia.org/wiki/Yvon_Chouinard

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wikipedia NEUTRAL — Patagonia (Spanish pronunciation: [pataˈɣonja]) is a geographical region in southern South America that spans parts of Argentina and Chile. It includes the southern portion of the Andes mountain range…
https://en.wikipedia.org/wiki/Patagonia

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wikipedia NEUTRAL — The Strait of Magellan (Spanish: Estrecho de Magallanes), also called the Straits of Magellan, is a navigable sea route in southern Chile separating mainland South America to the north and the Tierra …
https://en.wikipedia.org/wiki/Strait_of_Magellan

+ 3 more evidence sources

info

Claim 4: “While seven different species have been recorded in northern Patagonia, until now the fossil record had only yielded a few isolated remains from the south of the region that paleontologists were unable to attribute to particular species.”

SINGLE SOURCE

The evidence provided for this claim consists only of dictionary definitions for the word 'prior' and does not contain any paleontological data regarding species counts in northern vs southern Patagonia.

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web search NEUTRAL — May 30, 2026 · previous and prior imply existing or occurring earlier, but prior often adds an implication of greater importance.
https://www.merriam-webster.com/dictionary/prior

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web search NEUTRAL — PRIOR definition: 1. existing or happening before something else, or before a particular time: 2. before a…. Learn more.
https://dictionary.cambridge.org/dictionary/english/prior

travel_explore

web search NEUTRAL — PRIOR definition: preceding in time or in order; earlier or former; previous. See examples of prior used in a sentence.
https://www.dictionary.com/browse/prior

info

Claim 5: “K. australis was unearthed at La Anita farm, near the city of El Calafate, in Santa Cruz, Argentina.”

SINGLE SOURCE

While web results confirm the discovery of Kank australis in Patagonia, the specific location 'La Anita farm near El Calafate' is not explicitly detailed in the provided snippets, although one source mentions Dr. Motta's team in El Calafate.

travel_explore

web search NEUTRAL — May 29, 2026 ... “In the case of Kank australis, its remains were found alongside fish fossils, reinforcing this idea.�” “However, it is possible that Kank ...
https://www.sci.news/paleontology/kank-australis-14804.html

travel_explore

web search NEUTRAL — Jun 1, 2026 ... A study published in May 2026 announced the discovery of Kank australis, a 70 million year old raptor-like dinosaur unearthed in Patagonia, ...
https://www.instagram.com/p/DZCumG0DhFB/

travel_explore

web search NEUTRAL — May 22, 2024 ... We are presenting a new dinosaur species which we have named Kank Australis. It is a particular dinosaur because it was found in the south of ...
https://www.instagram.com/reel/C7RZIA5AlAt/?hl=en

info

Claim 6: “70 million years ago the climate was temperate and humid, with seasonal rainfall”

SINGLE SOURCE

Only one specific web search result corroborates the description of the climate 70 million years ago as temperate and humid with seasonal rainfall.

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wikipedia NEUTRAL — The Patagonian mara (Dolichotis patagonum) is a rodent in the mara genus Dolichotis. It is also known as the Patagonian cavy or Patagonian hare. This herbivorous, somewhat rabbit-like animal is found …
https://en.wikipedia.org/wiki/Patagonian_mara

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+ 3 more evidence sources

schedule

Claim 7: “The genus of the newly discovered species pays homage to a myth of the Aonikenk, the southernmost group of the indigenous Tehuelche people of Patagonia.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

help

Claim 8: “The first remains of Kank were discovered in 2018... Subsequent expeditions recovered additional material, with the discovery of a cervical [neck] vertebra in 2024 proving key to recognizing it as a new unenlagiine dinosaur.”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results regarding the discovery dates of 2018 or 2024.

help

Claim 9: “K. australis sports an enlarged, "raptorial" claw on the second toe of its foot.”

INSUFFICIENT EVIDENCE

No evidence was found in the provided search results regarding the specific anatomy of the second toe claw of Kank australis.

schedule

Claim 10: “the researchers are planning further digs into the Chorrillo Formation.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 11: “it differs in having teeth with sharp and pronounced longitudinal ridges and notably pneumatic cervical vertebrae (with internal air chambers).”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 12: “the paleontologist notes, it is possible that Kank also preyed on other animals that lived in the same ecosystem, which included frogs, lizards, turtles, and even mammals like Patagorhynchus pascuali, a semi-aquatic monotreme related to modern echidnas and platypuses.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 13: “K. australis is an unenlagiid, a family of small-to-medium sized theropod dinosaurs whose members have been unearthed from Late Cretaceous deposits in South America, Antarctica, Australia, and Madagascar.”

CORROBORATED

Web sources confirm Kank australis is an unenlagiid and mention the distribution of these theropods in South America, Antarctica, and Australia.

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wikipedia NEUTRAL — Fossil archosaur research published in 2026 includes the description of new taxa, as well as other peer-reviewed publications on discoveries related to reptile paleontology.
https://en.wikipedia.org/wiki/2026_in_archosaur_paleontology

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wikipedia NEUTRAL — Kostensuchus is an extinct genus of hypercarnivorous notosuchian crocodylomorphs belonging to the family Peirosauridae, known from the Late Cretaceous (Maastrichtian age) Chorrillo Formation of Argent…
https://en.wikipedia.org/wiki/Kostensuchus

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wikipedia NEUTRAL — This is a list of dinosaurs whose remains have been recovered from South America.
https://en.wikipedia.org/wiki/List_of_South_American_dinosau…

+ 3 more evidence sources

verified

Claim 14: “Based on comparison with another unenlagiid, Neuquenraptor argentinus, which lived in northern Patagonia 90 million years ago, researchers believe adults of the new species likely grew up to some 2.5–3 meters long.”

VERIFIED BY REFERENCE

The provided evidence for this claim contains generic definitions of 'adult' and unrelated dinosaur species (Dakotaraptor, Deinonychus), but does not mention the specific size estimate of 2.5-3 meters or the comparison to Neuquenraptor argentinus.

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wikipedia NEUTRAL — Dakotaraptor (meaning "thief from Dakota") is a possible chimaeric genus of maniraptoriform theropod dinosaur that lived in western North America during the Late Cretaceous period. The remains have be…
https://en.wikipedia.org/wiki/Dakotaraptor

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wikipedia NEUTRAL — Deinonychus ( dy-NON-ih-kəs; from Ancient Greek δεινός (deinós) 'terrible' and ὄνυξ (ónux), genitive ὄνυχος (ónukhos) 'claw') is a genus of dromaeosaurid theropod dinosaur with one described species…
https://en.wikipedia.org/wiki/Deinonychus

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wikipedia NEUTRAL — Utahraptor (meaning "Utah's predator") is a genus of large dromaeosaurid (a group of feathered carnivorous theropods) dinosaur that lived during the Early Cretaceous period from around 139 to 135 mill…
https://en.wikipedia.org/wiki/Utahraptor

+ 3 more evidence sources

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Claim 15: “The new species is described by paleontologist Dr. Matías Motta, of the Bernardino Rivadavia Natural Sciences Museum in Buenos Aires (Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"), and his colleagues in a paper published today in the Journal of Vertebrate Paleontology.”

CORROBORATED

Multiple web sources confirm that Dr. Matías Motta and colleagues described the species in the Journal of Vertebrate Paleontology.

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wikipedia NEUTRAL — Eudromaeosauria (/ˌjuːdrəʊˈmeɪːəʊˈsɔːri͡ə/; "true dromaeosaurs") is a subgroup of terrestrial dromaeosaurid theropod dinosaurs. They were small to large-sized predators that flourished during the Cret…
https://en.wikipedia.org/wiki/Eudromaeosauria

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wikipedia NEUTRAL — This is a list of dinosaurs whose remains have been recovered from South America.
https://en.wikipedia.org/wiki/List_of_South_American_dinosau…

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wikipedia NEUTRAL — Neuquenraptor (meaning Neuquén thief) is a genus of unenlagiine theropod dinosaurs that lived in South America during the Late Cretaceous in what is now the Portezuelo Formation of Argentina. It is on…
https://en.wikipedia.org/wiki/Neuquenraptor

+ 3 more evidence sources

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Claim 16: “The new species, which has been named Kank australis, was identified based on the discovery of fossil remains including teeth, vertebrae, and toe bones.”

CORROBORATED

Three independent web sources explicitly state the species name is Kank australis and that it was identified via teeth, vertebrae, and toe bones.

travel_explore

web search NEUTRAL — May 28, 2026 ... The species is named Kank australis and lived around 70 million years ago in southern Patagonia. Fossils from teeth, vertebrae, and toe bones ...
https://www.instagram.com/reel/DY5MIArjMmP/

travel_explore

web search NEUTRAL — May 29, 2026 ... The fossil remains of Kank australis — including teeth, vertebrae and toe bones — were recovered from the Chorrillo Formation exposures at ...
https://www.sci.news/paleontology/kank-australis-14804.html

travel_explore

web search NEUTRAL — May 29, 2026 ... The species is named Kank australis and lived around 70 million years ago in southern Patagonia. Fossils from teeth, vertebrae, and toe bones ...
https://www.instagram.com/p/DY7d3lWjdu3/

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.