The Cretaceous-Paleogene (K-Pg or K-T) mass extinction — the event in which the non-avian dinosaurs, along with about 70% of all species in the fossil record went extinct — was probably caused by the Chicxulub meteor impact in Yucatán, México. However, scientists have long wondered about the massive volcanic eruptions that were occurring in northwestern […]
Read Annie’s illustrated chronicle (includes over 90 photographs) of a Nevada field expedition she financed and participated in 112 years ago. Also, see what the Nevada locality looks like today and learn more about the expedition’s participants.
You might think that an 85-foot-deep hole where a bunch of horses, wolves, camels, elephants, and plenty of other animals accidentally plummeted to their death over tens of thousands of years would have enough red flags to make going into it yourself sound like a bad idea. But what if these unfortunate critters could tell […]
Roughly 10 million students attend American community colleges each academic year, accounting for more than a third of all American undergraduates. Relative to their peers at four-year institutions, community college students are much more likely to come from lower income households, much more likely to be members of an underrepresented minority group, and much more […]
Reconstructing biotic interactions is crucial to understand the functioning and evolution of ecosystems through time, but this is notoriously difficult. Competition in deep time cannot be readily seen except for overgrowth of one organism by another under the assumption that both were alive at the same time. Parasites usually do not preserve because they are […]
It is widely recognized that major groups evolve at different rates, in their own evolutionary trajectories. Some evolve fast and are very diversified while others evolve slowly and may never experience an explosion of diversity throughout their trajectory. One of my research interests is understanding the pace of morphological evolution through time, and the organisms […]
I am very grateful to have received a UCMP Graduate Student Research Award via the Barnosky Fund in April 2016. I used these funds to collect pilot data from major natural history museum collections around the country for my dissertation research. My research investigates responses in fossil animal communities to climate change over long time […]
Using Fossil Whale Barnacles to Reconstruct Prehistoric Whale Migrations Baleen whales, as we know them today, lead lives that are largely defined by their annual migrations. Every year, whales spend their winters breeding and reproducing in tropical waters, then travel to poleward feeding areas each summer. For North Pacific humpback whales, winter breeding areas cluster […]