Ancient fossil sheds big light on evolution mystery: Solving a 100-year arthropod mystery
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Updates every hour. Last Updated: 18-Aug-2025 05:11 ET (18-Aug-2025 09:11 GMT/UTC)
In a new study published in the Journal of Systematic Palaeontology, Harvard researchers in the Department of Organismic and Evolutionary Biology, formally describe Helmetia expansa, offering new insights into its anatomy, behavior and evolutionary relationships.
New research will help scientists predict where and when animals will move, a task which is becoming more urgent, given the current rapid pace of global change.
On our planet, at any one moment, billions of animals are on the move. From migratory birds, insects, marine mammals and sharks connecting distant continents and seas, to bees and other insects pollinating our crops, to grazing animals roaming across the plain. The study of animal movement has grown fast in recent decades. However, much of this work still focuses on describing and understanding current patterns, rather than predicting future movements.
The problem is that using the past and present as a guide will be of limited use given how quickly environments are changing, due to new patterns of land use, climate change, and human population shifts.
This is where the new research comes in. It sets out a framework that can help scientists provide more robust predictions in rapidly changing environmental conditions. It can help to conserve species, but also to protect wider ecosystems and our environment and the many services these provide to human wellbeing.
A sea turtle’s shell is a masterpiece. A new study reveals that marine turtle shells combine flexibility and strength to protect against predators like sharks and stress while optimizing movement. This adaptation highlights the complex design of their shells and provides insights into this remarkable balance of strength and flexibility, which has allowed them to survive in the ocean for millions of years – an example of evolution shaping species in an environment.