August 18, 2007

Picking through The Boneyard

8:27 pm

The Boneyard

The third edition of The Boneyard, a fossil-based festival of blog posts, is up at Laelaps. Host Brian Switek gave my Snyder Quarry series a very gracious nod, but he’s compiled an heroic amount of other excellent paleontology-themed writings from around the web. It might not be polite to pick favorites, but there are several posts listed there that I think deserve some extra attention:

  • Chris Clarke’s vivid description of a Miocene eruption, and how it might have been viewed by its first-hand witnesses.
  • Neil at microecos goes into the genome of the American Mastodon, but really he had me at “Incognitum”.
  • The Victorian Peeper reports on a fitting upgrade to the Crystal Palace dinosaur sculptures.
  • And Zach at When Pigs Fly Returns (who will be hosting the next Boneyard) has a grand gallery of prehistoric weirdness.

Also note that microecos has a list of Brian’s own paleo-themed writings from the previous two weeks, which somehow missed out on inclusion in The Boneyard. I particularly recommend the bit about phytosaurs.

—Matt Celeskey.

August 17, 2007

Stories from the Snyder Quarry 4

8:12 pm

Part 4: Back in the Trenches, and Back from the Quarry

Just before dawn near the Snyder Quarry, Ghost Ranch

My last full day at the Snyder Quarry started just before dawn. I woke up at about 5;30, pulled on my boots, and stumbled out of my stuffy tent into the cool, quiet landscape just as the sun was beginning to rise.

Dawn over the Snyder Quarry, Ghost Ranch

Camp cook Rich Wilke had a pot of strong piñon coffee ready. The field crew gradually assembled as he prepared us each a hefty breakfast of fried potatoes, eggs, sausage, and bacon. Once we’d polished off the morning meal, Larry, Justin, Dee and I started up a nearby hill and settled into the morning’s work in the quarry.

By Thursday morning, the big block had been loaded into the truck, and each of us was finishing up our own, smaller blocks, expanding the quarry a couple of feet back into the hillside. Previous days of work searching for the telltale texture and shape of bone culminated in half-a-dozen isolated islands of grey siltstone containing various bits and pieces from northern New Mexico’s Triassic denizens. We carefully widened and deepened the trenches around these blocks, keeping a careful eye out for additional fossils as we scraped through the sediment.


Thursday in the Snyder Quarry. From left to right: Dee Wilke, Larry Rinehart, Justin Spielmann, Mary Moore, and Jim Moore.

Lunchtime came a couple hours after the sun had chased the morning shade from the quarry. We stretched our legs and headed back to camp for sandwiches and limeade. After a civilized break, the crew made their way back up the hill, set up tarps to shade the quarry, and returned to work.

Once the trenches were dug through the fossil-bearing layer, we jacketed the tops of the blocks in burlap and plaster. After the plaster had hardened, we cracked the rock beneath each jacket, flipped them, and loaded them into the truck. By the end of the day on Thursday we had extracted nearly all the blocks, leaving only one with a coat of fresh plaster to dry overnight. We returned to camp for a celebratory steak dinner, tired but satisfied with the results of four days’ work. Following the final night’s feast, we drove into the Ghost Ranch campgrounds, where we had thankfully received approval to use the showers. Being able to scrub away each day’s accumulation of grit and sunscreen was a luxury I greatly appreciated on this trip.

Friday morning we awoke, broke camp, and returned to the quarry after a comparatively light breakfast. We retrieved the last jacket, gathered our tools, and covered the quarry with a layer of dirt so that the scars we had cut into the hillside would be less noticeable.

We drove out of the Snyder Quarry at about 9:00am, our truck groaning under the weight of our haul. Larry estimated we brought back about 3000 pounds of plaster-wrapped rock brimming with Triassic treasures: vertebrae and limb bones from crocodile-like phytosaurs, richly textured scutes from armor-plated aetosaurs, hopefully a few dinosaurian bits, and some other pieces that were, intriguingly, less easy to identify. The fossils we collected that week should keep preparators and researchers at the New Mexico Museum of Natural History and Science busy for years to come.

As mentioned in the first post, the core of the field crew consisted of Sr. Preparator Larry Rinehart, Geoscience Collections Manager Justin Spielmann, Volunteer Preparator Dee Wilke, her husband Rich, and myself. Several other individuals came up during the week, as well. Author Jaenet Guggenheim popped up on Tuesday to snap photos for a project she is working on. Volunteer Preparators Curt Haakenson and Robert Hubbard helped out on Wednesday. And Museum volunteers Jim and Mary Moore lent their talents to the quarrying crew on Thursday and Friday.

Sadly, I missed the one visitor I was looking forward to seeing most. My wife Roxanne joined Christine Ellison (who works with me in the Exhibits Dept.) for a trip up on Friday. Due to a scheduling mix-up, they left the Museum just about the same time we left the Quarry, and we must have passed each other somewhere near Española, New Mexico. Fortunately, the two of them realized what had happened after a quick hike around the campsite, and returned to Albuquerque. I picked Roxanne up at the NMMNHS right around 5:00. We were both exhausted from the day’s travels, but rarely have I seen a more welcome sight than my lovely wife walking out to meet me that Friday afternoon.

Stay tuned for one final installment: Sketches from a Triassic BBQ

—Matt Celeskey.

Jurassic Sea Spiders

7:56 am

BBC News was the first to report on three new species of sea spider from the Jurassic-aged fossil beds at La Voulte-sur-Rhône in southern France. Be sure to flip through this slideshow of the specimens: guaranteed to be the most beautifully creepy fossils you’ll see all day.

Further Reading:

Charbonnier, S., Vannier, J., and Riou, B. New sea spiders from the Jurassic La Voulte-sur-Rhône Lagerstätte. Proceedings of the Royal Society B. Published online. doi:10.1098/rspb.2007.0848

A hi-res image of three of the fossils is available here.

National Geographic News has the story, as does Afarensis.

—Matt Celeskey.

August 12, 2007

Stories from the Snyder Quarry 3

10:22 pm

Part Three: The Art of Ghost Ranch, an O’Keefe-less Overview

Ghost Ranch is, perhaps, most famous as the home of twentieth-century painter Georgia O’Keefe. But among those of a more paleontological stripe, Ghost Ranch’s claim to fame is the Whitaker Quarry, where researchers have unearthed dozens (hundreds?) of beautifully articulated skeletons from the little dinosaur Coelophysis. These and other Triassic fossils from the area have inspired their own share of painting and sculpture, and the Ruth Hall Museum of Paleontology at Ghost Ranch contains some must-see gems for the devotee of Triassic paleoart.

Last Wednesday morning (well, two Wednesdays back now), while we were waiting for the last coat of plaster to harden on the big block, part of our Snyder Quarry crew made a brief visit to the museum to check out their exhibits. When we arrived, curator Alex Downs was doing his best to introduce a group of unenthusiastic (albeit well-mannered) students to the fossil vertebrates of the area. He greeted us warmly and pointed out the museum’s newest acquisition, a life-sized sculpture of the bipedal crocodylomorph Effigia okeefeae (now considered by some to be synonymous with Shuvosaurus inexpectatus).

Phil Bircheff's sculpture of Effigia okeefeae
Phil Bircheff’s sculpture of Effigia okeefeae

The sculpture had some nice details, especially the scale patterns along the ankles and feet. Unfortunately, its butter-yellow coloration washed out much of the sculpture’s relief in the brightly lit display. Still, it gave a good sense of the overall proportions of this bizarre dinosaur-mimic, and it is a worthy restoration by sculptor Phil Bircheff.

More pictures from the Ruth Hall Museum of Paleontology below the fold:

(more…)

—Matt Celeskey.

August 8, 2007

Mauricio Antón website

10:57 pm

Mauricio Antón is one of the top artists currently working in the field of paleontological reconstructions and restorations. Very few can match his dedication to scientific accuracy and artistic skill. Pop on over to www.mauricioanton.com for an overview of his drawings, paintings, 3-D models, and scientific publications. The interface is all in Flash and you’ll need to enable popup windows, but it’s well worth the effort.

—Matt Celeskey.