Sometimes in order to get folks to really pay attention you have to talk like a scientist. Good thing for beavers Zane Eddy’s thesis defense is now available online to tell the story of the Martinez Beavers from an academic’s point of view. This is so well done with lots of explanation on the expanding nature of “Cultural Carrying Capacity” and even has video from the actual November 7th meeting I hope you’ll watch and share.
Thank you Zane for all your hard work and congratulations!
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Afterwards if you have change burning a hole in your pocket this morning I know just what you should spend it on, as a very rare castoroides skull is up for auction at Bonham’s today. Thanks Rickipedia for the tip. I can imagine him with something like this on his wall. How about you, are you tempted?
Giant Beaver Skull

£ 18,000 – 21,000Natural History
25 May 2021, 10:00 PDT
Castoroides ohioensis
Pleistocene
Florida
One of the main anatomical differences between the Giant Beaver and modern beaver species, besides its massive size, is tooth structure. Modern beavers have chisel-like incisor teeth for gnawing on wood. The teeth of the Giant Beaver were bigger and broader, growing to about six 3 inches in length. Also, proportionate to its size, the tail of the Giant Beaver was longer and narrower, and its hind legs shorter. The first Giant Beaver fossils were discovered in 1837 in a peat bog in Ohio, hence the species name ohioensis. The present specimen displays excellent preservation and expert preparation. The upper incisors are original. Specimens of this size and quality are very rare. Offered on a custom base. Measuring 14 x 11 x 9 in
Now I can remember when I thought I was insane for buying the copy for 350 way back in 2008. It just struck me as hilarious to show up at a city council meeting with this on my lap. But the real thing would have been wayyyy more funny.


The castoides skull copy is one our most prized beaver exhibit items. For years we’ve been answering questions about this dinosaur beaver, reporting the slightly incredible research based on isotope analysis that they didn’t eat trees but survived on very small pond weed. People always scoff at that, and say then what are those big teeth for? Which I can never explain.
By studying the wood-cutting behaviour of ancient beavers that once roamed the Canadian high Arctic, an international team of scientists has discovered that tree predation – feeding on trees and harvesting wood – evolved in these now-extinct rodents long before dam-building.
On a recent warm winter’s day, Michael and I headed for our favorite local trail at Matt’s Creek, across the James River Foot Bridge on U.S. 501. We were soon greeted by an amazing wooden sculpture, with shavings all around the base of a tree that would soon topple to the ground.

Long ago, giant beasts roamed the Earth
Giant beavers (Castoroides ohioensis), the key antagonists in many Yamoria legends, actually existed in the swamps and lakes of the North around the time humans first arrived, between 40,000 and 16,000 years ago. And like the legends say, they may not have been all that easy to deal with.




































