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265-million-year-old fossil reveals oldest, largest predator in South America, long before the rise of dinosaurs

A 265-million-year-old fossil discovery in Brazil yields the oldest and largest known predator in South America, predating the rise of dinosaurs. The exquisitely preserved Pampaphoneus biccai had a skull over 40cm long and sharp canine teeth adapted for capturing prey.

SourceHarvard University, Department of Organismic and Evolutionary Biology·JournalZoological Journal of the Linnean Society·DateSep 12, 2023

Ancient giant amphibians swam like crocodiles 250 million years ago

A team of researchers from South Africa has discovered exceptional trace fossils that provide insight into the locomotion of ancient giant amphibians. The fossils, found on a rock surface once part of a tidal flat or lagoon, suggest these animals propelled themselves through water with continuous side-to-side tail motions.

SourcePLOS·JournalPLOS ONE·TypeObservational study·DateMar 29, 2023
Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Fossil dental exams reveal how tusks first evolved and why they are unique only to mammals

Researchers shed light on the evolution of mammalian tusks by tracing them back to ancient mammal relatives called dicynodonts. Dicynodonts had protruding tusks in their upper jaws, but they were not always true tusks – instead, some had enamel-coated teeth that did not fit the definition.

SourceHarvard University, Department of Organismic and Evolutionary Biology·JournalProceedings of the Royal Society B Biological Sciences·DateOct 26, 2021

Acid raid, ozone depletion contributed to ancient extinction

Researchers found that sulfur dioxide and carbon dioxide releases from Siberian volcanoes could have created acidic rain, damaging plants and organisms. The study suggests that ozone depletion and temperature increases contributed to the end-Permian mass extinction on land.

SourceCarnegie Institution for Science·JournalGeology·DateNov 22, 2013
Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.