"The Quest for the Great Gray Mossy" is a novelette by Harry Turtledove published in the January/February, 2020 issue of Analog and reprinted in the collection The Best of Harry Turtledove (2021). It may also be read on Analog's website for the time being.
"Running of the Bulls," a pastiche of Ernest Hemingway's The Sun Also Rises, set in a world where sentient dinosaurs take the place of humans. Turtledove has stated that it is not set in the same timeline.