Prehistoric Creature of the Week: Alphadon marshi
(source. Technically from Cox 1998 but I digress)
Hey there, dear readers! Jasper here, and this week, I bring you...an opossum?! “I thought this was “PREHISTORIC creature of the week!” you yell. However, not only are opossums pretty ancient themselves, this critter is actually a fossil species. Let’s go and explore Alphadon!
Pronunciation: AL-fa-don MAR-shy
Means: Marsh’s First Tooth
Location: North America, from Alberta, Canada south to New Mexico, USA. Specific formations include Lance, Hell Creek, and Ojo Alamo.
Time: 66 million years ago, Maastrichtian stage, Late Cretaceous
Size: Estimated to be 30 centimeters, or about 12 inches.
Alphadon is an interesting creature, though not much is known about it. It has been compared to the modern opossum in a number of ways by palaeontologists, which fits because both are small North American marsupials. All that is known of the creature are teeth. However, just a single tooth can be enough for a palaeontologist specializing in mammals, because every species and genus has a unique dentition. Returning to Alphadon, nine species are known from fossils. This just goes to show how individual mammal teeth really are. Alphadon’s teeth indicate an omnivorous diet, with items ranging from fruit to insects on the menu.
The animal was first discovered by world-famous palaeontologist George Gaylord Simpson in the year 1929. It would have coexisted with many dinosaurs across its range, including Tyrannosaurus, Triceratops, Ankylosaurus, and Alamosaurus, among many others. Its main predators probably would have been small carnivorous dinosaurs, such as Acheroraptor and various troodonts. It’s likely that because of all these large animals and potential predators, Alphadon hung out in trees or burrows at daytime, coming out at nighttime to hunt for prey.
Come back next week for the ORIGINAL “Missing Link!”