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Showing results for tags 'ordovician'.
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Gone through my fossil collection and have these fossils that not sure what they are they where all found in Bluegrass region of Kentucky. I think the image 1501 is a type of ruquose coral the fossil matix is 1/4 calcite. The other two fossil matrix is limestone.
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I collected this Strophomena planumbona brachiopod recently in the Liberty Formation (Late Ordovician) near St. Leon, Indiana. What caught my eye are the "bumps" near the muscle scar. I've collected and seen a lot of Strophomena brachiopods, but can't recall having ever seen these before. What exactly are they? @Tidgy's Dad
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- cincinnatian
- indiana
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A couple months ago I found a new spot in the Liberty Formation (Late Ordovician) in southeast Indiana. The Liberty is most famous for the butter shale layer producing thousands of Flexicalymene minuens trilobites, well exposed at the large roadcut near St. Leon. This new site is in the Lower Liberty (below the trilobite shale), which is exposed at St. Leon but is mostly covered by talus and thus difficult to hunt there. I was able to visit this site again last week, and I think it will become a regular spot for me whenever I can travel to the Cincinnati area. Figured I'd share some of my favorite finds from these two visits. Glyptorthis insculpta Hebertella occidentalis Petrocrania scabiosa inarticulate brachiopods attached to a Strophomena planumbona Leptaena richmondensis Plaesiomys subquadrata Plaesiomys subquadrata with an attached bryozoan The hypostome of a lichiid trilobite Plicodendrocrinus casei - I think this is the most common crinoid in the Liberty Flexicalymene retrorsa If you ever are able to collect in the Liberty, definitely do. It produces a lot of very nice and interesting specimens.
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- brachiopod
- cincinnatian
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What is the stratigraphic and paleogeographic range of Whitfieldoceras?
siteseer posted a topic in Questions & Answers
One of my friends has a Whitfieldoceras specimen from the Ordovician of Wisconsin. He asked me if I knew anything more about it. I didn't and didn't see much online. Does it have a record outside the Ordovician? Is it found elsewhere in the U.S./the world? I have the same question about Beloitoceras. He has one of those from the same site. I think I have one from a Minnesota site somewhere but couldn't find it. Is it known from elsewhere and did it survive beyond the Ordovician? Thanks, Jess -
Last weekend I visited a roadcut in Hadeland, Norway, with rocks from Late Ordovician (Katian) in the Gagnum formation, and cut a rock into two parts with my hammer and found this strange fossile, which also was cut into two. The length of the speciemen is 10-12 mm long. Anyone have an idea of what is can be? The first two pictures is from one of the two parts of the rock, the last tree from the other part.
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- gagnum formation
- mid katian
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How should I preserve an internal part of an Orthocone cephalopod
Konodioda posted a topic in Fossil Preparation
Should I preserve this. And, please tell me how I should preserve this.
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found in a roadcut in Rockford. Lived in the Ordovician period. I'm not sure what it is but, it might be spines of a trilobite.
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- northern illinois
- ordovician
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Taxonomy from Sumrall & Zamora 2011. Diagnosis (Sumrall & Zamora 2011, p. 441): "Large Isorophus with moderately curved ambulacra and proportionately wide peripheral rim." Identified by oilshale using Sumrall & Zamora 2011. References: Sumrall, Colin D. & Zamora, Samuel (2011) Ordovician edrioasteroids from Morocco: faunal exchanges across the Rheic Ocean. Journal of Systematic Palaeontology, Vol. 9, Issue 3, September 2011, 425–454.
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From the album: Trilobites
Purchased. This cheirurid could use a bit more prep, but it is a healthy size and mostly complete.-
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- ordovician
- ottawa
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From the album: Trilobites
A purchased example from Ontario, this Ceraurus is-
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- ceraurus
- ordovician
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From the album: Trilobites
Collected in the upper Neuville shales, this olenid is among the more abundant faunal elements, along with graptolites and occasional pyritized nautiloids. Of note to distinguish the species is an array of nodes along the axis.-
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- olenid
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From the album: Bryozoan of Minnesota Ordovician
One of the longest rugosa bryozoan that i have found so far in Decorah Shale Formation. Branches subcylindrical, branching of equal thickness. Long intervals between branches. Clusters of large cells are conspicuous, The one in the northern most part of this picture might have a crinoid holdfast. -
From the album: Paleozoic of Sweden
Found in the big quarry in Kinnekulle, Hällekis, Sweden. Ordovician period. Possibly Helicotoma or Ecculiomphalus. -
Hello, I've been recently fascinated by large isotelus trilobites. Does anyone on here own one and would like to show and talk about it, I would if I owned one but I don't see that happening anytime soon haha. This is the largest I've seen for sale so far that would've been 8 inches, would be nice to be able to find one but I don't have that luxury.
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I was cleaning up my Platteville finds from last fall and came across this. It in all likelihood is an ichnofossil but if anyone have additional thoughts about it, please reply!! The Platteville has plenty of trace fossils but I have yet to see one with this appearance. Would love to have an idea of it's maker.
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- ichnofossil
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Thanks to Tim @Fossildude19 for identifying the following recent find as a bryozoan. I'm trying to narrow it down to at least genus. Taking a wild stab . . . genus Parvohallopora? I can't seem to find any image that resembles this one with any degree of certainty. Thanks. Camille
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- bryozoan
- etobicoke creek
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First trip of the year to Decorah Shale Formation in Ordovician Minnesota. This was one of the few fossils I found - I assumed it was a regular Large Gumdrop Bryozoan, Prasopora conoidea. Then when I got to cleaning the clay and soft shale off it looks so different. No noticeable pores and sharp angles. Here's two Large Prasopora conoidea - one smooth form and one rough and layered form on the left side for comparation. There is also a little Hormotoma fragilis gastropod on top. It doesn't even look like a trace fossil, as trace fossils are usually harder than usual shale or gathering of coarse sediments.
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
- bivalve
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Upper Ordovician bivalve - Ambonychia radiata
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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Upper Ordovician bivalve - Ambonychia radiata (?)
Rogue Embryo posted a gallery image in Member Collections
From the album: Camille's fossils - Georgian Bay Formation
Details are indistinct, but based on shape and location (Georgian Bay Formation), possibly Ambonychia radiata. Field collection by Camille Martin, September 25, 2021© Camille Martin
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- ambonychia radiata
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News Flash! thefossilforum.com featured on a Behind the Scenes podcast for the outdoor show Minnesota Bound, host is Laura Schara and person interviewed is "The Fossil Lady" Bev Sandlin. Minnesota Bound Podcast - MN Bound Podcast | When MN was under the ocean! (transistor.fm) 'Sorry I haven't been around for a while, but I am getting old and have slowed way down. I am still fossil hunting some and giving some fossil hunting tours, but I am hoping to find a replacement "Fossil Lady" before I bite the dust. A couple of years ago I was featured, second segment in episode #903 Cops and Kids, on a Minnesota Bound episode for fossil hunting, which I shared with Minnesota Buckeye, geologist Emily and our own Coprolite lady, Lori Gesch, @GeschWhat. A couple of weeks ago I was contacted to do a Behind the Scenes podcast on fossil hunting in Minnesota and this is it! Without all of the wonderful members of thefossilforum.com I would not have what little knowledge I have today and am able to share with others on the joy of fossil hunting. I had never even heard a podcast before I did this one and they sent me a link to it. Please be kind as I shared what little knowledge I have and hopefully it is at least somewhat accurate, at least it is enthusiastic. :-) I did get my blog up and running after almost two years of it being down - SEE smack myself on the forehead! Twenty minutes with Hostgator and it was up and running again. However, if I don't use it, I lose it (two strokes) and now I'm having a devil of a time trying to figure out how to post again, such is life... :-) So, my effort to send people to the BEST site on the internet for fossil hunters - thefossilforum.com!!! Thank you all for your knowledge, patience and kindness! Bev
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Greetings. I am new to the forum and this is my first post. I'm an amateur collector in Ohio who recently visited the Caesar Creek park and came back with a fossil I can't identify. Here is data about the site: Liberty and Whitewater Formations (Camp, Roadside Geology of Ohio, p. 61) Classified Ordovician Limestone and Shale The fossil is just over six centimeters long. It washed out of the formation naturally; I've done minimal preparation. The fossil has a flattened cone shape. One end has a distinct point, the surface is pitted and wrinkled (skin-like), and there are parallel lines on the opposite end. There are ribbed, tube structures on one side, which I believe are separate fossils (Cornulites or Tentaculites? Thompson, National Audubon Society Field Guide to North American Fossils, entries 345, 346). I polished one edge with parallel lines to see internal structure. When I saw the fossil on the ground, I thought, "Large bivalve" because of the parallel lines. But it is not a bivalve. Though it has a cone-like shape, it also does not look like the horn corals I picked up at the same location. Suggestions would be greatly appreciated.
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I have a partial cephalon of a trilobite from the Galena Group (Late/Upper Ordovician) from NE Iowa that I obtained from Mike @minnbuckeye, and am having trouble ID'ing. Given the partial nature and somewhat poor preservation, an ID may not be possible, but the glabella seems distinctive enough that someone may recognize it even though I believe the eyes are missing. I've removed some matrix from it, but thought I was about to do more damage than good if I went any further. In reading through a variety of papers, the best match I can find is a Greenops species (maybe G. fitzpatracki or something similar) but these are Devonian in age so that's not it. What are the Ordovician genera that have that type of face found in this area? Big rounded glabella with distinctive furrows and pustules all over it. Here are some pictures and I'm hoping some of our trilobite experts may recognize this one. I saw some Ordovician genera such as Pterygomeetopus and Ceraurus that are close but still don't seem to match best I can tell. Any ideas will certainly be appreciated or hints to further papers I can search through. Here is an overall image of the cephalon from the top. The black bar is 1 cm. Here is a bit closer image to show the granulal nature of the glabella. The overall width is estimated at 1.5 cm and the length is right at 1 cm. A profile view of the subject. A full frontal again to demonstrate the overall shape. Thanks for any and all ideas!! Any ideas
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Canada/Ontario/Ordovician/Upper Ordovician
MarcusFossils posted a gallery image in Member Collections
From the album: My Collection
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