Fossil discovery fills in missing information about modern fish evolution
Peer-Reviewed Publication
Updates every hour. Last Updated: 25-Jun-2026 17:16 ET (25-Jun-2026 21:16 GMT/UTC)
After an asteroid slammed into Earth 66 million years ago, there is very little evidence of fish in the fossil record. Now, a research team including University of Michigan graduate student Sanaa El-Sayed has discovered the earliest known examples of six modern fish groups that still swim in Earth's seas today.
Cold Spring Harbor Laboratory Professor Christopher Hammell and his team have discovered that proteins MYRF-1 and LIN-42 act as the master developmental clock in C. elegans, scheduling the start time and duration of the worm’s four larval stages. This is the first non-repeating biological clock of its kind ever found.
For generations, scientists believed a queen honeybee was made almost entirely by diet: feed an ordinary larva enough royal jelly and a ruler emerges. But new research suggests queens are created through a more elaborate process.
• Fossil fragments suggest Praearcturus gigas represents the largest scorpion ever discovered, perhaps one metre in length
• Specimens held in the Natural History Museum collection since the 1870s have been reinterpreted using modern techniques
• Giant scorpion lived tens of millions of years before other famous “giant” arthropods, reshaping ideas about how and why early arthropods grew so large
When compared to membrane affinity binding columns and ultracentrifugation, size exclusion chromatography isolation of extracellular vesicles (EVs) from bronchoalveolar lavage fluid yields the lowest contaminating free protein, highest nucleic acid content, and has similar yield of EVs while maintaining EV structure and function for downstream applications.