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May 15 – The Feast of Mercury

The Roman god Mercury, from the House of the Vettii, Pompeii. Image by Buzz Ferebee (2017).https://commons.wikimedia.org/wiki/File:House_of_the_Vettii_VI_15,1_Pompeii_2017_Detail_of_Mercury_with_his_caduceus_from_central_panel_on_north_wall_exedra_p_%28Mau_Plan%29_courtesy_of_Buzz_Ferebee.jpg. May 15 was the date of the Mercuralia, the Feast of Mercury. Mercury was the Roman version for the ancient Greek god Hermes, the… Read More ›

Coelurus again

Coelurus is one of my favorite theropod dinosaurs, and has been since I was young. It’s not as well-known as other Jurassic theropods like Allosaurus, Ceratosaurus, and Ornitholestes, partly because it is only known from fragmentary evidence. Yet I’m always… Read More ›

Hallopus

This is Hallopus victor, a 3-foot long reptile that lived in the Morrison Formation of western North America during the late Jurassic Period approximately 150 million years ago. Hallopus belonged to a group of reptiles called the “sphenosuchians” a group… Read More ›

Camptosaurus

This is Camptosaurus dispar, a 20 foot long plant-eating dinosaur from the Morrison Formation of western North America during the late Jurassic Period. In most paleo-art, it seems that the only purpose in life for this unfortunate animal is to… Read More ›

Macelognathus

This is Macelognathus vagans. This animal lived in the Morrison Formation of western North America during the late Jurassic Period approximately 150 million years ago. Macelognathus belongs to a group of animals called the “sphenosuchians”, which is a group that’s… Read More ›

Dryosaurus

NOTE: This article was originally posted on April 8, 2020. It was substantially updated on December 14, 2022. This is Dryosaurus, a 10 foot long plant-eating ornithopod dinosaur from the Late Jurassic Morrison Formation of western North America, and possibly… Read More ›