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Showing results for tags 'iowa'.
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From the album: Lime Creek Devonian Rockford Iowa
Diaphorostoma antiquum Rare - very very distinct shapes, more like the freshwater nerites you find in pet stores. Only found one so far! There's some other smaller gastropods I hadn't identified yet. -
From the album: Lime Creek Devonian Rockford Iowa
Lioclema occidens common. One weird thing about Lime Creek Formation is the numbers of bryozoan species which was much more diverse in Ordovician become much more less diverse even thought similar environment - muddy subtropical seas. This is the largest rugose bryozoan left. All the others (so far not identified yet) are much smaller, less than .2 of a centimeter in diameter. -
From the album: Lime Creek Devonian Rockford Iowa
For now I'm just generally identify as Homalophyllum. And some people said they have trouble finding horn corals but for some reason as this massive pile shows, they're easy for me! SW corner are some largest and smaller specimens. The larger ones are easier to find and thus are the rarer while one inches and less seem to be the hardest for people to find. -
From the album: Lime Creek Devonian Rockford Iowa
The one on the right is positive identify as Gomphoceras floydensis. Rare. Middle is more of a single segment and the right one is a different species, currently unidentified. Seem like cephalopods from Rockford Iowa are on the small side and low diversity of species. Hadn't found one trilobite at all so far sigh. -
From the album: Lime Creek Devonian Rockford Iowa
Floydia gigantea. Much more common than Westerna gigantea. Whorls greatly enlarges in size and tend to be more oval shaped and flattened. Strongly resembles some modern top shells. There's a few other giant gastropods but I still need to check more in the near future. I was surprised seeing this good sized well preserved specimen in the middle sitting out in the open. -
From the album: Lime Creek Devonian Rockford Iowa
Naticopsis depressa Rare. Tightly whorled, like a giant bellerophon species. -
From the album: Lime Creek Devonian Rockford Iowa
Bensbergia pulchra Rare - only had found two so far. Very distinct whorls, more like some modern gastropods like tulip snails. -
I found this in Black Hawk County Iowa. It is approx. 9cm x 11cm x 3cm. My guesses are always wrong even when (or especially when) I use Google images so I'm looking forward to being in the right spot for help. Thanks
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From the album: Lime Creek Devonian Rockford Iowa
Aulopora sp. Chain coral most commonly found encrusting the apex of giant gastropod shells but can break loose and pile up on the muddy bottom on occasion. Tie with Phillipsastrea woodmani as most common colonial coral for rockford. -
From the album: Lime Creek Devonian Rockford Iowa
Phillipsastrea woodmani odd enough this is a colonial horn coral. Tie with Aulopora sp. for the most common colonial coral in the site. Often easily overlooked when covered with a lot of shale, I have to look for hints of its to uncover it. The leftmost specimen was found on the ground in a least visited part of the quarry and thus had been completely washed off of all shale by the Iowan weather. -
From the album: Lime Creek Devonian Rockford Iowa
Syringopora sp. Rare coral species. Took me a bit of researching to find it into one Iowa fossil book. Author claimed to have found only 5 or something close to it but I had found 2. Easily overlooked and mistook for Stromatoporoid or bryozoan. I call it a small pores coral. Seem to be a unusual colonial tube type coral that's mainly at an angle to the surface of the colony. -
From the album: Lime Creek Devonian Rockford Iowa
Varying specimens of Westerna gigantea. Can be VERY EASILY confused with other giant Rockford gastropod species. Took me a while of studying to try to separate it from the others by its tighter coils and keeping its circular/oval interior instead of becoming more flatter. -
From the album: Lime Creek Devonian Rockford Iowa
Reverse side of my largest Westerna gigantea. -
From the album: Lime Creek Devonian Rockford Iowa
My largest Westerna gigantea. Part of the shell is preserved, which is smooth and have no ridges. Compare to Turbonopsis and Floydia its more tightly coiled and lacks the ridges when shell are preserved. Uncommon - I suspect its more due to overharvested as I tend to find more juveniles than adults. -
From the album: Lime Creek Devonian Rockford Iowa
Often sources don't said anything about the juvenile forms of brachiopods so here is a picture of juveniles of the brachiopod Theodossia hungerfordi. Since the adults are so abundant it makes it easier to find a wide variety of sizes. -
From the album: Lime Creek Devonian Rockford Iowa
Most commonly Theodossia hungerfordi keep both halves of the shells when it die. So for a bit while when I found those top portion of shells separated I thought they were a different species but shows how dramatic this brachiopod can look different. -
From the album: Lime Creek Devonian Rockford Iowa
Theodossia hungerfordi very common. I also noticed it tend to be more variable in shapes and have thicker harder shells so deformation due to geological processes is rarer than a couple other lookalikes. Can be easily mistaken for several other genus due to its variability in shapes. -
I found this in eastern Iowa and was unsure if it was coral or a sponge. Anything would be helpful!
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Lately, I have been enjoying @Wrangellian's Show us your stromatolites. It made me think about some of my finds. I will post just 2 of them for the purpose of figuring out if they are stromatolites or stromatophoroid sponges. These were collected over the last month. The first came from the upper Ordovician of NE Iowa.I can NOT tell the difference!!!! It can be frustrating. The second ones, which I am pretty sure are stromatoporoids, came from the Devonian, Solon member or just above it, of central Iowa.
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Found this bone in a creek in Central Iowa and would like to find out what it is. It is 2 inches long. It looks aged, surface is very smooth. Seems heavier than bone but lighter than rock.
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Hello all! My name is Nate, and I am excited beyond words to be here! I've had an interest in fossils since early childhood, and it's never faded. I primarily focus on the native fossils of my region, being mostly brachiopods and serpulids (so far). Although I am a Critical Care Paramedic by trade, I try to use whatever time I can to be out exploring and collecting in my native South-West Iowa. I will freely admit to being quite inexperienced with geology and taxonomy, and as such I'm sure I'll provide a lot of fodder for the Identification section. I look forward to participating here, and thank you for having me!
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This past weekend, I had the pleasure of hunting with my rock club in central Iowa. I found what I think is placoderm, though there was multiple opinions given to me. Nothing earth shattering, but exciting for me! Can you help clarify the ID of the specimens? The last piece broke revealing more "placoderm" inside.
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Hello, all! As my first submission for identification, let me present to you the first fossil(?) I collected from the field. I feel I should apologize for several things right now: I have very little functional knowledge of local geography, especially as it relates to this specimen. In truth, I wasn't hunting for fossils when I found it; I was fishing for catfish. Since childhood, my favorite fishing spot has been at the junction of a local creek (Indian Creek, if anyone happens to know the geography of South-West Iowa) and the Missouri River. Good spot for big catfish, and plenty of limestone boulders to brace against while fighting them. It's easily accessible via bicycle trails. In July of 2018, I had hooked a sizeable fish when he snapped my line around a snag. Enraged (that was my dinner swimming away, after all), I hurled an apple-sized rock at one of the limestone boulders, hard enough to split it along a fracture line. Intending to release more frustration by reducing it to gravel, I yanked the crack open. Inside the fault, I saw this perfect-looking shell. I hadn't really thought it was possible to collect fossils locally, let alone find one with color. So, I gently pried it off the limestone matrix with the blade of my Leatherman, tucked it in my tackle box, and peddled home. When I got home, a cursory Google search of local fossil assemblages led me to believe I may have found either a brachiopod or some kind of oyster-like bivalve. Recognizing that the thin shell was brittle, I immediately applied a coat of 50/50 cyanoacrylate glue and clear nail polish (a mixture I now favor for finishing). In summary: The specimen itself measures roughly 36 mm wide by 24 mm deep. It is concave, with a deep fold to the midline. Slightly pinkish-brown with white speckles, which may be early (and incomplete) calcification. It was found at GPS coordinates 41.1890, -95.8741, encased in a limestone boulder. The boulder itself may have been deposited by the action of the nearby Missouri River, or washed out of the surrounding geography. Any conjectural identification is welcome and appreciated.
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It was found south East Iowa and I assume it’s a fossil not sure does anyone know?
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Hi, I have a friend from Ames, Iowa who found this in her yard. It looks like a fossil to me, but I'm not good with invertebrates. Is this a fossil? The shell is an inch in diameter. Thank you, Bellamy
