A New Mosasaur Species Named Jormungandr | 7 Days of Science

A New Mosasaur Species Named Jormungandr | 7 Days of Science

by Ben G Thomas

Life & Natural Systems Biology PSBiology, life sciencesPSVZoology and animal sciences
🎙 Ben G Thomas 👥 763K 📅 November 1, 2023 ⏱ 11 min 👁 46K 📄 news review 🧭 2026-09-06
Available in: English (current) Français

Keywords

JormungandrmosasaurspinosaurtitanosaurChicxulub

Summary

This episode of ‘7 Days of Science’ presents a weekly roundup of scientific news. The first story discusses two papers on the dangers of massive planets, showing how giant planets can destabilize the orbits of smaller ones, making habitable zones less likely to support life. Next, researchers report that chimpanzees undergo menopause, based on long-term observations of the Ngogo group in Uganda, challenging previous assumptions. In paleontology, a possible Jurassic spinosaur fossil, an isolated toe claw from India, is described, which could be the oldest record of the group. A new Middle Triassic fossil assemblage in Poland is reported, notable for an abundance of Tanystropheus remains. The main story is the naming of a new mosasaur species, Jormungandr walhallaensis, from North Dakota, with a nearly complete skull and estimated length of 7.3 meters. A new titanosaur species, Inawentu oslatus, from Patagonia, is also described, with a rare complete skull and evidence of convergent evolution with rebbachisaurids. Finally, a study on the Chicxulub impact suggests that fine silicate dust contributed significantly to the impact winter, causing a global temperature drop of up to 15°C and shutting down photosynthesis for up to 2 years. The host also announces an upcoming expedition to Morocco.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable information by summarizing recent scientific discoveries and placing them in context. The argumentation is solid, as each news item is supported by references to peer-reviewed studies, and the host explains the significance of each finding. The presentation is balanced, acknowledging uncertainties and alternative interpretations, such as the tentative identification of the spinosaur claw and the potential for the mosasaur’s phylogenetic placement to change.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is high, with the host accurately representing the findings and citing the original papers. The sources are credible, including journals like The Astronomical Journal, Science, Nature, and specialized paleontology journals. The title accurately reflects the content, focusing on the new mosasaur species, which is a highlight of the episode. The video’s structure with clear chapters and references enhances its reliability.

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Title / Content Match

The title accurately reflects the content, as the video covers the new mosasaur species Jormungandr among other science news.

Quality & Reliability

8/10

The video presents a weekly roundup of scientific news, each item backed by references to peer-reviewed papers. The host accurately describes the findings and provides context, demonstrating a good understanding of the subject. The information is reliable and well-sourced, though the format limits depth.

Chapters

Cited Sources

  • The dangers of massive planets (paper 1) — Discussed in the first news story about the dangers of massive planets.
  • The dangers of massive planets (paper 2) — Discussed in the first news story about the dangers of massive planets.
  • Menopause in chimpanzees (Science article) — Discussed in the second news story about chimpanzee menopause.
  • Menopause in chimpanzees (Science paper) — Discussed in the second news story about chimpanzee menopause.
  • Menopause in chimpanzees (Cell paper) — Discussed in the second news story about chimpanzee menopause.
  • Possible Jurassic spinosaur (paper) — Discussed in the third news story about the possible Jurassic spinosaur.
  • New Mid Triassic assemblage in Poland (paper) — Discussed in the fourth news story about the new Triassic fossil assemblage.
  • New mosasaur species Jormungandr walhallaensis (paper) — Discussed in the fifth news story about the new mosasaur species.
  • New titanosaur species Inawentu oslatus (paper) — Discussed in the sixth news story about the new titanosaur species.
  • Chicxulub impact winter sustained by fine silicate dust (paper) — Discussed in the seventh news story about the Chicxulub impact winter.

Concurring Sources

External References

Contribution & Novelties

The video synthesizes recent scientific discoveries, providing a concise overview of new findings in astronomy, primatology, and paleontology. Its original contribution lies in the accessible presentation of these studies, highlighting their significance and connections. The discussion of the new mosasaur Jormungandr walhallaensis and the potential oldest spinosaur are particularly novel.

Pour aller plus loin :

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Radar Profile

The radar profile shows high scores in quantity and quality of information, with a slightly lower technical level, indicating that the content is accessible yet informative. The overall reliability is strong, reflecting the use of peer-reviewed sources.

Reliability 8/10

💬 Très positif. Sur les 30 commentaires analysés, les spectateurs expriment un enthousiasme marqué pour la découverte du mosasaure Jormungandr, saluant son nom et la qualité de la présentation, avec quelques discussions sur les implications scientifiques.