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Valley of the Mastodon · 1h ago

Fossil Friday – partial mastodon skeleton

California mastodons have been in the news lately, so I decided to go with one of our Diamond Valley Lake mastodons for Fossil Friday this week. The specimen shown above is a partially artic...
Valley of the Mastodon · 1w ago

Fossil Friday – possible bobcat tooth

Confession time: I’m not an expert on most of the organisms I feature on Fossil Friday, and it sometimes takes me a fair bit of research to work out what I’m going to say. Because of that, w...
Valley of the Mastodon · 1W ago

Fossil Friday – possible mastodon bones

A common theme on this blog is that we can often get a lot of information from very incomplete material. Even so, as a general rule, the more remains we have from a given fossil organism, th...
Valley of the Mastodon · 3W ago

Fossil Friday – mammoth tooth

With the influence of Max Mastodon, Diamond Valley Lake mammoths sometimes get short shrift around here. But while DVL mammoths are not nearly as common as mastodons, there is still plenty o...
Valley of the Mastodon · 3W ago

Fossil Friday – horse metacarpal

One of the joys of paleontology is that every fossil has a story. Through our understanding of anatomy, geology, ecology, and a host of other field, we can often reveal part of that story, a...
Valley of the Mastodon · 1M ago

Fossil Friday – Paramylodon skull

Even if a bone is lucky enough to be preserved as a fossil, time is not always kind. There are numerous ways a bone can be altered after burial, including being smushed by the weight of over...
Valley of the Mastodon · 1M ago

Fossil Friday – tree frog humerus

The majority of fossils from the Diamond Valley Lake deposits are from small animals. While small mammals are most common, there are substantial numbers of birds, reptiles, and amphibians. T...
Valley of the Mastodon · 1M ago

Fossil Friday – Bison atlas vertebra, part 2

This week’s Fossil Friday features one of Diamond Valley Lake’s most common large mammals, the bison. Specifically, this bone is the atlas vertebra, the first vertebra in the neck. It’s show...
Valley of the Mastodon · 1M ago

Fossil Friday – worn mastodon tooth

Volunteer Joe Reavis been hard at work on a collection of fossils from a mitigation project in Murrieta that includes a lot of mastodon material. As far as we can tell so far, all of the mas...
Valley of the Mastodon · 2M ago

Fossil Friday – chewed-up Bison tibia

I recently finished reading Anthony Martin’s book about dinosaur trace fossils, Dinosaurs Without Bones, so I’ve had trace fossils on my mind. Even though I’m not a trace fossil specialist I...