The new snail species was scientifically named Calybium plicatus Hoang et al., 2025, based on the characteristic of having ridges appearing on the top edge of the shell mouth (in Latin: plicatus means ridge, fold). The specimen was discovered at the location of Sinkhole 1 of Son Doong Cave, in Phong Nha - Ke Bang National Park, Quang Binh Province.

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Standard specimen image of Calybium plicatus species. Photo: Nguyen Thanh Son.

This is the second species of the genus Calybium Morlet, 1892 (Gastropoda: Helicinidae) discovered in the world , and is also the first time this genus of land snail is recorded for the fauna of Vietnam.

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Dr. Do Duc Sang is analyzing snail specimens at the Department of Applied Zoology, Faculty of Biology, University of Science - Vietnam National University, Hanoi. Photo: Nguyen Thanh Son.

The discovery of this new species of land snail further confirms that Vietnam is a country with high biodiversity in the world, especially in the forest ecosystem on limestone mountains and caves.

The new snail species was also published by a group of Vietnamese scientists in the journal Ruthenica, Russian Malacological Journal, January 2025.

Forecast of the benchmark score of the University of Natural Sciences in 2024 from 20 - 26.5

Forecast of the benchmark score of the University of Natural Sciences in 2024 from 20 - 26.5

The University of Science, Vietnam National University, Hanoi predicts that the standard score for admission to the school in 2024 will range from 20 to 26.5 points, on a scale of 30.
Natural Science students win contest using Math to solve real-life problems

Natural Science students win contest using Math to solve real-life problems

Surpassing many teams from all over the country, students from the High School for Gifted Students in Natural Sciences (under the University of Natural Sciences - VNU) won first prize in the 2024 Vietnam Mathematical Modeling Competition.