May 19, 2007 - Cretaceous Fossils, Montgomery Co, AL
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The March field trip was graced with perfect weather for playing in a creek. The morning started out pleasantly cool but was shorts and T-shirt weather by the time we got to the site.
Many varieties of sharks teeth were found including Otodus, Squalicorax and Ptychodus. Besides shark teeth the group found Oyster, petrified wood, fish vertebra, a mosasaur vertebra and other items of interest.
We had an "early leavers" group and an "it isn't dark yet" group; both groups stopped to enjoy dinner and continue the fossil discussions, fill their bellies, and wind down before the long drive home.
--Leisa Whitlow, Contributor
--Edited by Vicki Lais
(Photos courtest Jan Novak and Vicki Lais)
Most of the gang!
The long hike down the hill to the creek.
Are you sure we're supposed to go here, Aunt Mel?
The creek was quite low, and shark teeth were immediately found.
Start 'um early, and they love fossils for life! (Or maybe it's just the rock throwing . . .)
The easy way to hunt fossils . . .
Mosasaur vertebra.
A perfect outing for our future paleontologist!
What did you find, young lady? A nice collection of shark teeth, ptychodus teeth, petrified wood, coral, and pretty pebbles.
Quite a few oyster shells were found.
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Appears to be a tiny crocodile scute.
Nicely preserved worm tube.
More shark teeth.
Not sure what this is, any ideas?
Another unidentified fossil.
Tiny fish vertebra.
Decisions, decisions.. . . Do we want to collect in those gullies over there, or head out for supper? How about both?
BPS members went down to the Tombigbee in search of specimens from the marl limestone sequences in the Arcola Limestone Member (Late Cretaceous Campanian 83-74 mya). Steve and Bobby furnished the boats. BPS members climbed aboard and we headed off down the river. This is one of our favorite spots so anticipation was high. Once arrived, we headed off in different directions, some going down to the far end of the beach in hopes of finding a large ammonite like the one found last trip.
The water was very low on this trip, exposing areas we had never collected. Another mosasaur bone, probably from our “pet” Mosasaur, “Bigbee” was unearthed, much to our pleasure. Numerous pieces of carboniferous wood were found, also worm tubes, gastropods and a very nice portion of a turtle, which was jacketed for prep work back home. Several shark teeth, straight cephalopod segments, and some fish teeth were also found.
We had very pleasant weather, and, after a full day of collecting, some wanted to settle in for some food and conversation while another part of the group decided to head down the river to a marcasite collecting area . Some very nice crystalline calcite specimens were found, in addition to the large quantity of marcasite. Much to our delight, it turns out that we had a marcasite specialist amongst us who gave us an impromptu lecture on marcasite characteristics. This inspired discussion of the possibility of forming a coprolite committee. Any volunteers? Anybody want to explain to the general public exactly what coprolite IS? Or was.
As it was getting too dark to see, it was decided that food and conversation seemed like a pretty good idea at this point, so we caught up with the others and finished off the day in great style.
Great trip, great weather, great group, great food.
--Edited by Vicki Lais
(Photos courtesy Anca Croitoru, Lea Novack, and Vicki Lais)
Reconnaissance session covering the geology of the area and sample specimens.
This is an excellent specimen of a fish jaw that Greg found on a previous trip.
Gastropods and straight cephalopods found on prior trips.
Lining up the boats.
On the way again. . . .
Rocky bluffs composed of Arcola Limestone. Very fossiliferous.
More views of the river.
Large piece of shell and exogira.
Miscellaneous shells and straight cephalopods.
Numerous shell pieces in the limestone.
Anca beginning her search.
Loni found a nice turtle specimen, and asked that Greg and Leisa excavate the bones.
Excavation has begun. . . .
A closer look at the turtle parts.
Part of the turtle.
Turtle after preparation. Click image for a different view.
Anca is closely examining the limestone. She found a fish tooth in this area.
Another site further down the river where we collected marcasite.
Michael with some nice marcasite specimens. We discovered he is a marcasite specialist, and some of us discussed the need for a Coprolite Committee.
Claire also found a fantastic specimen of calcite, about the size of a fist.
View of the river.
We ended the day with more good conversation at a restaurant near the collecting site. Another "way out in the boonies" place with no advertising; if you don't know where it is, you probably won't even find it by accident.
Steve was spotted tooling around in the boat, looking as if he planned to go way down to a place that was difficult to walk to, so Vicki stuck out her thumb and she and Paige hitched a ride. A very exciting time getting into that boat from a cliff face! Claire decided not to try the boat trick, but decided to risk walking along the steep bluff. We got there about the same time, and of course were looking for "great treasures". Vicki spotted something that looked "odd" pretty quickly, and it turned out to be part of a large ammonite embedded in a huge boulder that everyone had walked past. We all started hunting around that area, but didn't find the other half. Further down, Steve stuck his hammer up under a rock before putting his hand there to check for fossils. Good thing he did, because a cottonmouth attacked the hammer! After moving away from the snake, we heard Claire squeal. She had found another large ammonite near where the first one was found, and it was almost complete. Steve just shook his head, and declared he would never pick up hitch-hikers again!
A small group took off on a scouting expedition after the trip was officially over. They found a nice shelf area with numerous fossils which were very fragile and easily breakable. So, we'll just enjoy the pictures! Found a number of very nice ammonites, a few shells, and pieces of fossil wood.
A big THANK YOU goes to Captain Gilbert and Captain Steve for the use of their boats!
(pictures courtesy Lea Martin, Claire Smith, and Vicki Lais.)
Hanging out waiting for everyone to arrive.
Paige, Leisa, Gilbert, Carl & Vicki popping out the small gastropods and straight cephalopods.
Claire is just getting started.
Mosasaur vertebra found by Vicki, quite a distance from the others that were found on the last trip.
Leisa excavating around a fragile fossil.
And the nice gastropod she collected.
The chalky shoreline. (Paige isn't tired, just getting a closer look!)
Steve's attention has just been diverted as someone stopped to talk . . .
Close-up of some of Steve's finds, mostly gastropods. There is also a nice mosasaur bone in that box.
Tiny nautiloid found by Steve.
Several Exogira were found.
Some of Lea's finds.
Some of Paige's finds.
Gilbert has found another one (what, I don't know!)
Nice gastropod and the impression it left in the chalk, found by either Lea or Paige.
Nice partial ammonite in place. It really blends in with the boulder quite well. Several people passed by without spotting it, leaving it for Vicki to find!
Same ammonite after excavation. This is the bottom that was protected from weathering.
Paige holding an ammonite found by Claire.
Carl showing off his favorite finds.
Captain Steve and Captain Gilbert. Thanks, guys!
Gilbert found some fossil carbonized wood and a mass of what is either worm tubes or bryozoans.
Another nice gastropod and image it left in the chalk.
Shells embedded in the chalk.
Carl & Leisa, tuckered out after a long day.
Steve's finds, all cleaned up and protective coating applied.
Nice Ammonite found by Claire (after cleaning)
Another view of the ammonite.
A limestone shelf filled with fossils found in the late evening. Nice to look at, but the fossils were too fragile to collect. Below is our "picture collection".
Nice ammonite.
A limb of carbonized wood.
Another nice ammonite.