Oklahoma's number one blog for natural and cultural history.

 

In the Words of Taylor Hanson

As you know from Digging Deep for Leadership, each year 12 high school students from across Oklahoma participate in Paleo Expedition - a hands-on two-week paleontological experience in Black Mesa. This year Taylor Hanson and Zane Woods, two of our Board of Visitors members, decided to visit the site to do a little digging of their own! And of course, we were thrilled to have them.

Wait! It gets better. Hanson has chronicled the experience in a four-page story that will appear in the summer edition of Tracks, the museum newsletter. And today, we’re offering you a sneak peek! So relax, pull up a chair and lose yourself in the words of Taylor Hanson.

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In the Footsteps of Dinosaurs

After our introduction to the site we were anxious to get to work and be of some service. At the front edge of the quarry was a cluster of earth, which had recently been coated with thick layers of plaster carefully molded around it to protect the fossil during transportation before being examined at the museum.

Now that the team had a couple of extra willing strong backs, Zane and I set out to perform the task of carefully flipping the nearly 300-pound cluster of earth that was half in plaster, in order to finish the preparatory process of chiseling away the remaining sediment for transport.

We set out to perform this simple task with smiles on our face and a not-so-small streak of nervousness - knowing that in a matter of minutes we could be responsible for destroying millions of years of time-protected fossil and a fair bit of labor by our hosts. Thankfully with close instruction and a healthy heave, two science tourists were able to perform the task successfully (and greatly relieved to have done so). 

Over the period of the afternoon we took on whatever tasks we could.  We joined the team in the detailed and dusty job of excavating one inch at a time the excess soil and clay, each clinging to the bottom of the fossils earthen cluster, and I enjoyed every scuffed knuckle and dust-coated wipe of my brow.

All around me I saw a team of passionate people putting their years of dedicated study and practice into action, carefully unearthing a new part of history. To be among them brush and pick in hand as a total novice getting the chance to share in that discovery was absolutely incredible.

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Amazing, right? Now, we know what you’re thinking. Where are the other three pages?! To read the rest of Hanson’s story, pick up a copy of Tracks - available at the end of July in the museum lobby. Or better yet, become a museum member! We’ll even mail it to you. Either way, you won’t want to miss this article. Because whether you’re a lover of paleontology, Oklahoma or Hanson, there’s something for everyone in this rich recollection.

Tools of the Trade

Thanks to viral videos like “Pizza to Supermodel,” we’re all familiar with the power of Photoshop. But did you know that scientists use Photoshop too? Take a look.

 Impressive, right? As you saw in the video, invertebrate paleontologists use the same software as top advertisers – but you won’t find them airbrushing supermodels.

As the name suggests, invertebrate paleontology specializes in the study of fossilized invertebrates. To study these small organisms, paleontologists must use a sophisticated method of photography to properly capture all aspects of a given fossil. While scientists do not use programs like Photoshop to transform an image, they do adjust lighting details to reveal parts of the fossils unseen to the naked eye.

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Ammonite 

Because cameras must choose a point of focus in close-range shots, the entire fossils cannot be in focus at once. That is why scientists snap a series of photographs – up to 100 per specimen – in which the focus continuously shifts by minimal increments. Often this process can take up to 20 minutes per specimen.

“Based on what taxa we are imaging, we usually take three or four standard views of an object – dorsal, anterior, lateral and so on,” said Roger Burkhalter, invertebrate paleontology collection manager. “Each view takes a couple of minutes to position and focus, then we take multiple images.” 

After all of these images are obtained, they are uploaded to a computer. Then, Helicon Focus software compresses all of the images at once. In doing so, the program merges the focused portions of each photograph. Then Photoshop is used to adjust brightness and contrast levels. In the end, the paleontologist is left with one crisp, high-resolution image.

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 Calyptaulax

According to Burkhalter, the Sam Noble Museum has been using this method of stacking for 5-6 years. Due to critical advances in software and camera hardware, the department has only grown more successful in image stacking with time. 

So, what becomes of a fossil’s cover shoot? Many will be published in articles in specialized scientific journals that document the fossils, but most are stored so that they can be accessed for later research or identification. But now, for the first time, we’re bringing our most exquisite work to you through Formed in Stone: The Natural Beauty of Fossils.

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These portraits and their respective “models” will be on display to wow museum visitors with an array of dazzling geometric patterns. From July 4 to Jan. 4,  2015, guests can enjoy a wide variety of spectacular of fossils ranging from 80 to 455 million years old.

“The fossils have a natural beauty that can be appreciated by the public, regardless of their level of interest in the biology and evolution of extinct animals,” said Steve Westrop, invertebrate paleontology curator. “We hope that the images will spark curiosity, and that visitors will be inspired to learn more from this exhibit, the permanent exhibits at the museum and our website. “

 Added bonus! We’re offering complimentary admission on opening day to celebrate. So whether you’re in it for the art, photography or science, join us from 10 a.m. to 5 p.m. July 4 in admiring the beautiful handiwork from these tools of the trade.

Inside the Treasure Box: Week Eleven

We’ve planned a “larger then life” finale for our ITTB series today. You could even say it is a story of Jurassic proportions. There’s a good chance that you’ve seen the object of today’s post if you’ve visited the museum, but before we reveal the paleontology department’s most prized specimen, here is a little backstory:

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The Sauroposeidon

In 1994, vertebrate paleontology curator Richard Cifelli and his team found four vertebrae of one Sauroposeidon in southeastern Oklahoma. Sauroposeidon fossils are common in Oklahoma, many of which come from a quarry located in Atoka.

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Each vertebra of the Sauroposeidon measured four feet or more in length. The bones were so enormous that Cifelli himself was unsure what he had uncovered at first. The name Sauroposeidon actually stems from the Greek word “saurus” (meaning lizard) and the mythological god Poseidon. The names refers to Poseidon’s nickname as “Earthshaker,” implying that the Sauroposeidon's weight and size was enough to move mountains.

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Poseidon, god of the sea and maker of earthquakes.

Sauroposeidon seems to be a relative of Brachiosaurus, and like Brachiosaurus, probably held its neck upright like a giraffe, rather than out in front of it like the Apatosaurus. Sauroposeidon would have been much larger than Brachiosaurus, however. Cifelli and former student Matt Wedel believe Sauroposeidon would have been nearly 100 feet long and stood some 60 feet tall. It could have stood flat-footed and looked into a sixth story window. In fact, the Guinness Book of World Records recognizes the Sauroposeidon as the world’s tallest dinosaur.

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Sauroposeidon Scale

Unlike other items featured in the ITTB series, which are too fragile for public display, the Sauroposeidon can be seen from just inside the Great Hall, peeking out from the Noble Corporation and Noble Energy Orientation Gallery. When it comes to fossils, go big or go home, right? We enjoyed sharing a glimpse into our collections and exhibits with you and hope this series has inspired you to visit and discover for yourself the specimens and artifacts featured in this series.

We look forward to seeing you soon!

Inside the Treasure Box: Week Nine

Some 455 million years ago, long before the wind came sweeping down the plains, Oklahoma was nothing more than a fragment of the ocean floor. A diverse array of marine life inhabited the waters above the future United States and left behind a rich prehistoric past. How do invertebrate paleontolgoists know all of this? Though these early sooners may be long gone, their skeletons remain.

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Trilobites embedded in limestone

This specimen, from the invertebrate paleontology department, is one of several slabs of limestone crowded with complete skeletons of the trilobite Homotelus. Trilobites are extinct marine arthropods that disappeared roughly 250 million years ago. In case you need a refresher, arthropods are a classification of animals with segmented bodies and external skeletons, like scorpions, crabs and butterflies.

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The Asian forest scorpion is an example of an arthropod.

The trilobite specimen shown above is important to scientists because it provides a snapshot into the behavior of these arthropods. Complete skeletons of trilobites are rare, as they would normally fall apart quickly after death. It is highly unusual to find hundreds of skeletons clustered together this way, as a result. Invertebrate paleontolgoists believe that the trilobites may have gathered in large numbers to spawn, much like modern horseshoe crabs along the east coast of the United States. 

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Horseshoe crabs

It’s also important to note that geography played a prominant role in the recovery of this specimen. Geological evidence indicates that the embedded trilobites were buried very quickly by mud, possibly by a storm close to shore that would have stirred up the sea floor and carried mud-laden waters offshore. After the storm waned, this mud was likely dumped on the sea bottom, burying the trilobites. Nearly 455 million years later, scientists discovered their skeletons, still intact, buried in the Ordovician rocks of the Criner Hills in southern Oklahoma.

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The Criner Hills are in Carter County, Okla.

Thanks to this discovery, invertebrate paleontologists now have a unique glimpse into the life of extinct animals. They also know that the reproductive behavior of trilobites resembles modern marine arthropods. Of course, you don’t have to look 455 millions years into the past to see Oklahoma’s astounding contributions to history. In fact, next week we’ll be looking at a more recent group of Oklahomans. Can you guess who?

Oklahoma Fossils Identified!

I’d like to share a link with you to a new web page created for identifying Oklahoma fossils, www.CommonFossilsOfOklahoma.snomnh.ou.edu.

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It’s packed with images of living plants and animals and their respective fossils, details about how paleontologists search for fossils, and ways to identifying Oklahoma fossils and learn about the communities these plants and animals came from.

If you’re in need of help identifying an object or fossil, submit a request, it’s easy!

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Feel free to visit the site and learn something new about Oklahoma fossils!