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Showing results for tags 'pennsylvanian'.
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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. :) -
From the album: icycatelf's Backyard Fossils
Diaphorodendron rimosum Hyden Formation Middle Pennsylvanian Eastern Kentucky 29cm (height) Trunk cast of a "scale tree." -
I was able to get out one day this March and collect some Mazon Creek nodules from Pit 11. I found all these as they were and all of them were weird enough to keep. Any help with ID's on any of them? Even if some aren't fossils I thought they were at least unique compared to the many solid dud nodules you find with the freeze/thaw process. Thanks! 1. 2. 3.
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Tiny Trilobite Pygidium from Pennsylavanian of Western PA.
Jeffrey P posted a topic in General Fossil Discussion
I was cleaning up this small Trepospira gastropod I found in 2015 in an exposure of the Ames Limestone in Western Pennsylvania and discovered attached to it is this very, very tiny trilobite pygidium- my first trilobite find of the Pennsylvanian Age.
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From the album: icycatelf's Backyard Fossils
Artisia Hyden Formation Middle Pennsylvanian Eastern Kentucky 8.9cm (height) Pith cast of an ancient tree-like plant, Cordaites -
Looking for help on an id for the following brachiopod from Jacksboro, TX. Scale is in centimeters. Formation is the Finis Shale of the Graham Formation, Pennsylvanian. Thanks in advance for your help.
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From the album: My Collection
Here is the negative and positive imprint of a Pennsylvanian aged fern that I found. This fossil belongs to the Pecopteris genus. Found at Corys Lane, Rhode Island. -
From the album: My Collection
Here is another plant material plate I found over at Cory's Lane, Rhode Island. This medium sized plate has a lepidodendron branch going through the middle with calamites and neuropteris leaves around the edges of the matrix. -
Hi all, A few months ago I was hunting in a hill that had been split for construction and found an abundance of fossiliferous limestone. I could identify most species, which consisted of mostly bivalves and brachiopods. I was thinking these were a type of brachiopod, but I haven't been able to place my finger right on it. Help is appreciated, and thanks as always!
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I found this yesterday at Lost Creek dam, Finis Shale member of the Graham Formation. The darker parts might be shark cartilage. Any ideas?
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Pennsylvanian Finis Shale. Need help, any ideas? 3 inches wide, 3 inches high. U
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This is Pennsylvanian age Mazon Creek type material found in Indiana.I have a lot of raw material that has been left outside soaking in water to freeze this winter.I've recently sorted through a lot of this material after Indiana's first extended freezing temperatures.These are some of the pieces that have questionable ID’s. 1.Segment of cone bract? 2.Seed or base of a Cyperites leaf or some form of bract?
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Had a few nodules pop from my winter nodule stash from pit 11 collecting. Wondering if anyone has ideas? Don't know if they are animals or suggestive mineral staining? from left to right: 1. jellyfish? 2. worm? 3. jellyfish? Something from the plant world? Sphenopteris? Thanks!
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Hello all! I'm in the process of cleaning my finds from my treasure hunt yesterday in Jacksboro, Texas. I would appreciate y'alls help on this one! Any ideas? I know it's Pennsylvanian - doesn't look like anything else I found that day (variety of crinoids, corals, brachiopods, gastropods, some echinoid plates & spines, the one awesome shark tooth). I don't know what this bad boy is but it's pretty cool. It is the size of a penny.
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Found this today. Is it the top of a Lepidodendron?
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From the album: Carboniferous Fossils-Ohio
Northeast Ohio -
From the album: Carboniferous Fossils-Ohio
Northeast Ohio -
From the album: Carboniferous Fossils-Ohio
Northeast Ohio
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