Tag #Cretaceous

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edition.cnn.com

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Apr 25, 04:12

Oldest Ant Fossil Discovered in Brazil

Researchers discovered the oldest known ant fossil, ""Vulcanidris cratensis"", a 113-million-year-old hell ant from Brazil's Crato Formation with unique scythe-like jaws, pushing back the ant fossil record by 10 million years and revealing early ant diversity.

Oldest Ant Fossil Discovered in Brazil

Researchers discovered the oldest known ant fossil, ""Vulcanidris cratensis"", a 113-million-year-old hell ant from Brazil's Crato Formation with unique scythe-like jaws, pushing back the ant fossil record by 10 million years and revealing early ant diversity.

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What unique anatomical features distinguish ""Vulcanidris cratensis"" from modern ants, and what does this reveal about early ant predatory strategies?

The discovery of ""Vulcanidris cratensis"" in Brazil significantly extends the known geographical range of early ants and challenges previous assumptions about their early evolution. The ant's unusual jaw structure indicates diverse predatory adaptations in early ant species, highlighting evolutionary experimentation before the group's diversification.

elpais.com

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Mar 17, 10:10

Chilean Ichthyosaur Fossil Reveals Early Cretaceous Secrets

Fiona, a 131-million-year-old pregnant ichthyosaur fossil discovered in Chile's Tyndall Glacier and extracted in 2022, provides unprecedented insights into the early Cretaceous Hauterivian age, revealing details about its diet (fish) and a fin pathology, while the glacier's melting exposes numerous ...

Chilean Ichthyosaur Fossil Reveals Early Cretaceous Secrets

Fiona, a 131-million-year-old pregnant ichthyosaur fossil discovered in Chile's Tyndall Glacier and extracted in 2022, provides unprecedented insights into the early Cretaceous Hauterivian age, revealing details about its diet (fish) and a fin pathology, while the glacier's melting exposes numerous ...

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How does Fiona's stomach content and the observed pathology contribute to our understanding of ichthyosaur biology and ecology?

Fiona's discovery is significant because it's the only complete pregnant ichthyosaur fossil of the Hauterivian age found globally. This unique specimen, nearly four meters long, allows for detailed study of the species' biology and ecology during a period with limited fossil evidence. The discovery also reveals a previously unknown pathology in one of Fiona's fins.

bbc.com

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Mar 25, 19:18

Two-Clawed Dinosaur Discovery in Mongolia

A new two-clawed dinosaur species, Duonychus tsogtbaatari, weighing approximately 260kg, was discovered in Mongolia's Gobi Desert; its unique two-fingered hands evolved separately from other two-fingered theropods, adding significantly to our understanding of therizinosaur evolution during the Late ...

Two-Clawed Dinosaur Discovery in Mongolia

A new two-clawed dinosaur species, Duonychus tsogtbaatari, weighing approximately 260kg, was discovered in Mongolia's Gobi Desert; its unique two-fingered hands evolved separately from other two-fingered theropods, adding significantly to our understanding of therizinosaur evolution during the Late ...

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How does the discovery of Duonychus tsogtbaatari's two-clawed hands challenge our understanding of therizinosaur evolution?

The discovery of Duonychus tsogtbaatari in the Gobi Desert, a significant fossil reservoir, provides crucial insights into the evolution of therizinosaurs. Its two-clawed hands, evolved separately from other two-fingered theropods, challenge previous assumptions about therizinosaur anatomy and potentially their behavior. This finding, from the Late Cretaceous period, contributes significantly to our knowledge of the final phase of dinosaur evolution.

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