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Showing results for tags 'pennsylvanian'.
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This tooth is from the Winterset Limestone Member, Kansas City Group, of the Pennsylvanian Subsystem. Any help with an ID will be appreciated. Russ
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This week we found ourselves headed for Carbon County, PA and looked up some places to go hunting. St. Clair was out, but there were some references to Carbondale here and there. As the name suggests, Carbondale was a coal mining town. There are active and inactive areas all over town, much of it fossiliferous. The most popular spot seems to be the one we went to, a tailings pile next to an apartment complex off of Westside Rd. The land status is unknown, but there were was nothing posted, so we ventured in as many have done before us. Our directions said to follow the gravel path between the third and fourth buildings on the right, then bear left and continue to the en of the ravel road, where you'd see a "mountain of tailings." When we parked, I looked from side to side for a pile I expected to be maybe the size of a van. From behind me, I hear my husband say, "Oh, that mountain of tailings." I looked from side to side. No, her told me, look straight ahead and up. Oh! It was indeed a mountain! The pile loomed above the rich grove. How did I miss that? (On a return trip a couple days later, I noticed it also loomed over the apartments!) A narrow trail leads through the woods to a meadow and a bare section of wall just asking to be explored. April was the perfect time to go as all the weeds were down from the winter snows and not yet regrowing much. The trees growing from the wall itself provided just enough footing for me to climb without sliding back down - until I wanted to. Whee! Once I reached the wall, it took me only seconds to spot my first bit of Calamities bark, and then another, and then a complete, 3D stalk section! After about an hour of searching I spotted a limb sticking put of the fine slate crumbs and pulled it out. It was a chunk of Calamites stalk as big as my outstretched hand. I spent a total of about 5 hours over two days scrabbling across a sheer wall of loose shale. Ferns! Leaves! Roots! Seeds! Bark of all different textures! Some of the ferns were incredibly detailed. One had all the miniscule veins outlined in red (pyrite?), while others were just extremely fine impressions in the grey rock. As it turns out, the gravel road itself runs across an overgrown tailings pile. Here and there you can find exposed rock, including bark plates bigger than dinner dishes! After spending what felt like an hour on day 2 (It turned out to be three hours!!!) I decided it was time for lunch and slid down the hill like a little kid. There at the base of the hill, was mu find for the week: a whole section of tree(?) trunk with bark all the way around the specimen. It was lying alone in the woods on some leaves, just waiting for someone to wander off the beaten path. I debated about bringing it home. It was so big! Hubby was snoozing on a nearby rock. Rocks are not his thing and bringing home piles of them doubly so, but he is so sweet that he picked that heavy thing up before I could blink and carried it to the car himself. He's a keeper! It will take quite some time to photograph all my treasures, but I will post in the comments here when I have an album together.
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From the album: Carbondale, PA
I found a whole plate of these, but somehow only the one example made it home. 13mm long Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Calamities sp., a bamboo-like plant closely related to modern horsetails with hollow, woody stem that grew more than 100 ft high (30m). Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Detail from previous image Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Unidentified species of petrified wood Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Pyrite (?) layer over shale Carbondale, PA Lewellyn Formation Pennsylvanian 299-323 myo -
From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Parallel-veined Cordaites leaf with mystery impression superimposed. Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo -
From the album: Carbondale, PA
Syringodendron sp. (Sigillaria family) Carbondale, PA Lewellyn Formation Pennsylvanian period -
From the album: Carbondale, PA
Finely parallel-veined leaves of a Cordaites plant alongside the branch or root of a giant Lycopod (aka scale tree or club moss). The latter could grow up to 50 m high! found in Carbondale, PA Lewellyn Formation Pennsylvanian (Upper Carboniferous) period 299-323 myo -
Kathleen B. Pigg of the University of Arizona notes that this "stem subsurface pattern that is sometimes called 'rabbit tracks'. The double track you see is probably a result of a pair of air channels that accompany the leaf trace through the cortex. The vertical ribs are produced by an increase of bark through secondary tissue production." The pair of sepicemns in the first image are the positive and negative impressions of the same piece. The second image is a detail from the same specimen.
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I have found a number of these items in the Pennsylvanian, Kansas City group, Winterset Limestone member in southern Kansas City. Any help in giving an ID will be appreciated. These items are quit common, so the local collectors have likely seen them. The longest I have found is about three inches and the thickness ranges from ½ to 1 ½ inches. Many of them have a core (usually white) that seems to run the length of the item.
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Here are some of the various genera of fusulinids present in the Midcontinent Pennsylvanian. I must admit I have no idea how to examine these to identify them down to the gereric level. Instead, I 'cheat' by poring through publications and finding certain stratigrapic horizons -- sometimes at specific localities -- that are dominated by one type of fusulinid. After that, all I have to do is show up and collect chunks of limestone or shale. Eowaeringella ultimata Bethany Falls Limestone (Missourian) Clay County, Missouri Loose: In matrix: Beedeina sp. (girtyi?) (edit: Some Fusulina have been reassigned to Beedeina) Higginsville Formation (Marmaton Group, Desmoinesian) Henry County, Missouri Loose: Beedeina sp. Higginsville Formation Bates County, Missouri In matrix: Kansanella tenuis Island Creek Shale (Missourian) Stanley, Kansas Loose: In matrix:
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Kansas Pennsylvanian Fusulinids Of Mysterious Geologic Derivation
Virgilian posted a topic in Member Collections
Several years ago, while hiking over a dam in eastern Kansas--which revealed abundant aggregate obviously quarried from the local Late Pennsylvanian Shawnee Group limestone--I happened to spot abundant, quite showy fusulinids among the chunks of riprap. I managed to secure two or three representative hand-sized samples. Not so sure I should have been doing this, actually...state property (perhaps even federal, come to think of it) and all; but, what the heck I reckon in retrospect. It was a one-off collecting experience along that dam. A photograph of one of those samples I've included herein. The fusulinds are Triticites, I'm fairly certain. In some respects, to my eye anyway, they certainly rival the justifiably world-famous Triticites fusulinids from the Kansas Upper Pennsylvanian Beil Limestone. True, these don't demonstrate the uniform cute "plumpness" of the Beil specimens, or the outrageous engorged profusion of fusulinid tests so evident in the Beil, but--wow--the examples I collected during that lone hike over that dam sure dazzle, to my eye anyhow. And here's where a mystery begins. What geologic rock formation did they come from? Some rather involved internet research disclosed that most of the aggregate/riprap used for that dam came from the Upper Pennsylvanian Clay Creek Limestone--but, the brownish coloration makes me think of the geologically older Upper Pennsylvanian Toronto Limestone of the Shawnee Group (which has also been quarried extensively for aggregate in eastern Kansas). Anyhow, if anybody recognizes the specific eastern Kansas geologic rock unit that produces such distinctively preserved fusulinids, be sure to let me know. I never did run across any surface, or even quarry, exposures that resembled this kind of fusulinid occurrence in eastern Kansas.
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I found this tooth last Sunday at an outcrop of the Pennsylvanian Bond Formation of the LaSalle Limestone Member in north central Illinois, but I have not been able to find any images online or in reference books of teeth that quite match up. My tentative ID based on a plate from page 545 of Worthen's Illinois Geological Survey v.4 https://archive.org/details/cu31924004664557 is Cochliodus, but I wanted to see if anyone with more experience had any insight. Thanks!
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From the album: icycatelf's Backyard Fossils
Calamites Hyden Formation Middle Pennsylvanian Eastern Kentucky 7.5 inches (height) I love fossil-hunting after a good rain. :)
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