A very entertaining anthology of dinosaur tales published in 1990. It includes a trio of stories originally published in the 1950s, two of which I consider true classics (L. Sprague de Camp's "A Gun for Dinosaur" & Arthur C. Clarke's "Time's Arrow").
The rest of the tales are from the 1970s and 1980s. Some of my favorites are those that take a humorous approach:
"Hatching Season," by Harry Turtledove. A newly-hatched duckbill imprints on a time-traveling scientist. This one actually keys more on action & suspense than humor, but the image of a baby hadrosaur thinking a human is its mother is in itself funny.
"The Last Thunder Horse West of the Mississippi," by Sharon N. Farbor. In the 1870s, two feuding scientists race to be the first to claim the last living dinosaur. The scientists are Cope & Marsh, two real-life figures who really did spent a ridiculous portion of their careers trying to one-up each other. In this story, outlaws, greed and the careless use of dynamite add additional tensions to their feud.
"Dinosaur on a Bicycle," by Tim Sullivan. This is an hilarious tale of an intelligent dinosaur using a time-traveling bike to meet his remote ancestors. The protagonist is the dinosaur equivalent to a slightly snobbish 19th Century English gentleman, so when he meets intelligent "apes" from an alternate timeline, he can't help but act a little bit high-hat towards them.
"The Night-Blooming Saurian," by James Tiptree, Jr. In order to maintain their government funding, time-traveling scientists find themselves embroiled in a scheme that involves large piles of simulated dinosaur poop.