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Humboldt County, Ca, Pleistocene Vertebrates


Interpaleo

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I was out hunting and thought I'd share one of the sites I visit up here in Northern California.

I live in Arcata, Humboldt County, about 5 hours north of the San Francisco area. Its pretty much a forest all around, but there are a couple places right along the coast where there are no trees and I can do a little collecting. This is one of my favorite sites around here, and is only a few minute drive from where I live.

This site is Pleistocene in age. There is a large Franciscan complex outcrop that trapped a whole lot of dead sea creatures in an eddy around 80 thousand years ago. Its mostly composed of shell and sand, with the majority of the formation made up of crushed shell. There are some pretty nice invertebrates though, including rare sea urchins and not so rare sand dollars. I occasionally pick up nice inverts, especially if I see a big crab claw or something. For the most part though I'm searching for vertebrate fossils.

So far I've found Sea Otter, Seal, Bird, and lots of Fish. The vertebrates are extremely fragile, and if ANY portion is exposed by the elements it instantly powderizes. My first step every time I see a vertebrate fossil is to glue it in place, or else there is no hope of recovery. There is no literature on the vertebrates at this site, and many of the specimens I have are the only representatives ever found. The other vertebrate fossils from this site are in a collection held at Humboldt State University, with the most notable being a large section of sea otter jaw with teeth. Someday I hope to do a little writing on this site, but for now its a nice place to spend the afternoon.

It'll probably take me a few posts to get the photos I want up, as I still don't know how to make their sizes smaller with this silly macbook. I'll start with the site, and a view from the site down onto the beach.

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My favorite finds form this site are in the little case. Sea otter incisor, Sea otter molar, Two ray teeth, a ray spine, and a tiny fish jaw full of crusher teeth.

The next shot is all the various fish parts I've come across.

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Ok last post.

Close up of the bird stuff.

Then close up of the Sea Otter fossils.

I should mention that sea otters are extinct around here, so these fossils are of a little more scientific value than most of the other stuff I've got.

Thanks for checking out my stuff!

Happy hunting,

Joe

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Nice pics, thanks for sharing! I like the whale barnacle the most.

Anyone who has never made a mistake has never tried anything new.
-Albert Einstein

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With all the delicate bones you have found so far I think its only a matter of time before you find a skull.

Many times I've wondered how much there is to know.  
led zeppelin

 

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Very Interesting finds. Congratulations.

Bobby

"A journey of a thousand miles begins with a single step." - Confucius

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Very informative post, Joe. It's a wonder that you get any complete bones from that "blender".

The human mind has the ability to believe anything is true.  -  JJ

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mmmmmmmmmmmmmmm...bird stuff.... :wub:

Can you give me an idea of their size? Length of the longest bone would be good enough.

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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The largest bird bone I've come across form this site is 90mm in length, with a 10mm diameter. I think its a from a cormorant.

Unfortunately, I keep getting to this site a little too late, and the weather has destroyed the ornate little ends that were exposed. Just one rainstorm is enough to destroy any bit of bird bone that's exposed, and this is Humboldt county, where it rains a whole lot. Its raining right now!

Ruining anything I left exposed from yesterday.

I'm gonna keep at it though, and sooner or later I'll luck out and get there right on time. For now though I'm happy to save what items I can from the elements.

Thanks for looking,

Joe

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Wow, what a great site you have there. I bet the weather can be a bummer as well as exciting, because you never know what you'll find when you get there. Thanks for sharing

Bob

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Hi;

Funny thing; I've been to this site quite a lot and have a teaching collection of fossils from here. I was teaching my students about the paleontology of this site AS I WAS SENT YOUR POSTING!! What a coincidence. Anyway, regardless to say, you have some REALLY important vertebrates here. As you know, the majority of the material is invert. This is the Hookton Formation. Please do not give out the exact location as this is a very important late Pleistocene fossil locality and very limited. There is published papers on the site, most noteably Ray Cole's work (who's fossils reside at HSU and who has a curio shop in Old Town Eureka called "Natural Selection"; he can give you the skinny on all the details. I can forward you the paleo paper published when I get home if you wish. But keep those verts safe and really be sure they end up at HSU eventually; what you have from the photos are super important. Feel free to contact me if you need to.

Wayne Thompson

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Thanks for your post!

I should say that this site is very limited in that there is not much accessible material. In addition, its extremely unstable with huge portions of cliff overhanging several feet. If you dig into the cliff it will fall on you.

Besides, it took me 5 years to find these vertebrate fossils. This site is not rich by any means. When I dig at a place like Shark Tooth Hill I am disappointed if I don't find 100 perfect teeth per day. At this little site I am happy to find a single fish bone.

I just thought I'd share some rare finds from a beautiful remote locality right here in the US.

Joe

Edited by Interpaleo
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Very nice

Bulldozers and dirt Bulldozers and dirt
behind the trailer, my desert
Them red clay piles are heaven on earth
I get my rocks off, bulldozers and dirt

Patterson Hood; Drive-By Truckers

 

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  • 7 years later...

P.S. I took know of this secret location. I will be making a voyage here in November with the rest of my class. I’ll post some findings here when I do.

 

-Nick

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