Search the Community
Showing results for tags 'Ordovician'.
-
On Dec. 31st, I had the opportunity to stop in Richmond, Indiana on my drive from Columbus, Ohio to Plainview, Mn. It was pouring rain with occasional claps of thunder when I arrived so I had to pull into Wal-Mart and purchase an umbrella before stepping out to look at the rock hillside. The finds were many, but I am not good at IDing this tubular "thing". There was one on each side of the rock. I did not see any more at this site. It was found in what I think is Whitewater Formation, upper Ordovician. Scaphite? Tentaculite? Tiny Cephalopod? Worm Borrow? Can anyone help to give it a name?? Thanks!! Mike
-
Hey! I was looking for native artifacts in a neighbourhood creek when I came across what I thought was a somewhat large cephalopod fossil. The creek is in Louisville Kentucky, leading to Floyd’s Fork. From the USGS Mapview, it looks like it’s Ordovician of the Drake’s formation. Either Bardstown member or Saluda Dolomite member. Upon further examination, I saw that the ridges on the sides were angled very steeply. It was very covered by matrix, so I decided to get to work on it with a dremel tool. After getting a significant amount of material off the fossil, I found that the ridges along the side were not in fact bilaterally symmetrical, and rather that these ridges went down the length of it, spiraling like they would on a screw. It is hollow, partially filled in with some softer, red stone and crystallized on the inside. From what I can tell, it has a curve to it reminding me of cyrtoconic(?) cephalopods. I read somewhere that cephalopods are bilaterally symmetrical, so I decided to post this here since I now don’t have any better guesses on what it is. My only other thoughts are that shark coprolites can be spiral shaped, and that it seems too smooth and hollowed to be a horn coral. My heads buzzing about this. Mum said it could be a unicorn horn . Due to upload limits, I will be adding a couple more photos below. I could not find any other fragments of the fossil besides this one section.
- 14 replies
-
- 1
-
-
- cephalopod
- churro
- (and 6 more)
-
Dear USA Brachiopoda enthusiasts, Could you see these images please? What is your expert idea about ID? I know that could be difficult from images. Thank you for any help you can offer. Ricardo
- 4 replies
-
- 1
-
-
- brachiopoda
- devonian
- (and 2 more)
-
Ordovician Roadcut Collecting Near Whites Creek, Tennessee
Nimravis posted a topic in Fossil Hunting Trips
Today I stopped to stretch my back and did about 10 minutes of collecting near Whites Creek, Tennessee- I believe that this might be Richmond Group Ordovician. I would be looking for a little help on some IDs, I believe @Peat Burns, @Herb And @Tidgy's Dad might be able to help out. Here are some of my finds- Brachiopods- Gastropods- Bryozoan- I believe that the smaller pieces are Constellatia Florida. Hash Plates-
- 25 replies
-
- 13
-
-
-
- brachiopods
- gastropods
- (and 1 more)
-
I made another day at my favorite hunting site. A cold and wet day. Didnt score anything really noticable, but this fat boy : Ectillaenus giganteus, who is actually "giganteus", complete and not that streched !
-
From the album: Trilobites
Ordovician - Haellekis, Sweden-
- 2
-
-
- asaphid
- ordovician
- (and 2 more)
-
From the album: Trilobites
Ordovician - Kinnekulle, Sweden-
- 1
-
-
- ordovician
- phacopid
- (and 1 more)
-
Found another # plate full of little bits and pieces, do you see anything identifiable? Photos show both sides, found on the Whitewater River in Southeast Indiana.
- 9 replies
-
- 2
-
-
- cincinnati arch
- ordovician
- (and 1 more)
-
I had a discussion elsewhere on the FF about Gabriceraurus herrmanni. The history of this trilobite is interesting. Walter(1924) described Ceraurus herrmanni from the Platteville limestone near the mouth of Catfish Creek, Dubuque Iowa. At this locality the Decorah is exposed and it is probably the unit the trilobite came from. The illustrated specimen only has a thorax and pygidium. Walter discusses how his species is different from Ceraurus dentatus and states that “The specimen is now in the Museum of the Collector, Mr. Richard Herrmann.” What ever happened to the collection of Mr. Herrmann is unknown and the specimen has not shown up in any museum collection and is assumed to be lost. Later Demott(1987) describes Gabriceraurus dentatus from the same unit the Decorah. In his synonymy he includes Ceraurus herrmanni (he spells “herrmanni” with only one “r”). Demott remarks that Walter(1927) thought C. herrmanni to be different from C. dentatus. However, the specimen is presumed to be lost and could not be compared to his material So, Demott concluded the specimens he has are the same as Gabriceraurus dentatus. Since Demott’s paper, more specimens have been collected and made their way into private and museum collections. Specimens of both G. dentatus and G. herrmanni have been examined and are determined to be different. The differences are subtle but different. Attached are two specimens of G. herrmanni I prepared that were collected by Al Scheer. One specimen is crushed flat and the other is in a limestone preserving it 3 dimensionally. The differences are striking and are a good example of how compaction of a trilobite can distort the features of a specimen. The flatten specimen looks more like a G. dentatus, while the 3 dimensional specimen is what G. herrmanni is supposed to look like.
- 3 replies
-
- 8
-
-
- gabriceraurus herrmanni
- ordovician
- (and 1 more)
-
With the mild December weather, I decided to squeeze in one more collecting trip before the end of the year. I contacted a few friends and we hopped in the car and made a six hour trek from the Chicagoland area down to Northern Kentucky. We decided to collect a huge roadcut outside of Maysville Kentucky. The cut is well known to collectors of Cincinnatian aged fossils. Many beautiful crinoids, edrioasteroids and other rare Ordovician fauna have been found at this site. The cut is enormous and is quite overwhelming to a first time collector. I have not done much collecting in the Cincinnatian but had had a chance to briefly visit this site once before and it looked promising. The site cuts through several formations of the Cincinnatian. From bottom to top, it exposes the Kope, Fairview and Bellevue Formations. My main goal was to hopefully find a rare edrioasteroid. We initially concentrated on the upper layers in the Bellevue. We had already had some luck earlier in the day with echinoderms. We had stopped at a smaller cut on our way to the site that exposed the Kope Formation. My friend found 2 nice slabs with well preserved examples of the Crinoid Ectenocaris with stems and calyx’s preserved. Unfortunately, we did not have much luck locating any Edrioasteroids. I decided to head down the cut and do a little prospecting in the Fairview. Almost immediately, I stumbled upon my best find ever in the Cincinnatian! I was looking at pieces of shale when I was stunned to see a slab covered in trilobites! For those who have not collected in the Cincinnatian, finding any trilobites other then Flexicalymene and Isotelus is a rare occurrence. A collector is likely to only find isolated parts of some of the rarer types. The trilobites that you do find are normally individuals and likely enrolled. After closer inspection, I was amazed to see that the trilobites that were preserved on this slab appeared to be examples of Ceraurus milleranus! All appear to be prone and some are even piled on top of each other. Finding one complete Ceraurus in the Cincinnatian would be considered an amazing and very rare find. In all, we collected over twenty in various stages of growth ranging from a tiny 1/4 inch example to one nearly two inches in length. The slabs need to be cleaned and prepped but I am attaching a picture of one of the unfinished pieces. I will add more pictures to this post once everything is prepped. We found some other nice fossils that day that I will post as well.
- 30 replies
-
- 29
-
-
-
- ceraurus
- cincinnatian
- (and 4 more)
-
Found this in Southeast Indiana, was wondering if it's Crinoid arms? It's a small rock but alot going on, just curious. Thank you!
-
From the album: La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army
Double Ectillaenus Giganteus from the ordovician shale south of Rennes France, found in spring 2018 -
Took some time to be done, but it was more about alot of small operations, than endless hours of pneumatic pen. All in all, the more time spent was with the dremel polishing the matrix. Before : Only operation before the picture was an emergency glueing on the field. Some time it s better to do this on the field, sometimes you better packed the different part of the puzzle home, clean them and glue them home. This time it was on the field. Then a bit of small chisel and a bit of pneumatic pen. Then a lot of dremel that will give the grey aspect to the matrix Then a bit of scalpel to remove a bit of matrix from the caudal spine. Then a bit of cutter to save one of the eodal' eyes from the counterpart. Then a bit of glue to set the said eye. And here we are :
- 7 replies
-
- 3
-
-
- brittany
- dariwillian
- (and 6 more)
-
Association of Ectillaenus giganteus and Eodalmanitina Sp - before preparation
elcoincoin posted a gallery image in Member Collections
From the album: La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army
Association of Ectillaenus giganteus and Eodalmanitina Sp - before preparation (except it has been glued on the field. -
Eodalmanitina sp and Ectillaenus Giganteus association - detail : Ectillaenus Giganteus
elcoincoin posted a gallery image in Member Collections
From the album: La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army
Eodalmanitina sp and Ectillaenus Giganteus association - detail : Ectillaenus Giganteus -
Eodalmanitina sp and Ectillaenus Giganteus association - detail : eodalmanitina
elcoincoin posted a gallery image in Member Collections
From the album: La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army
Eodalmanitina sp and Ectillaenus Giganteus association - detail : eodalmanitina : caudal spine has been cleaned a bit and an eyes reglued from the counterpart. -
Eodalmanitina sp and Ectillaenus Giganteus association
elcoincoin posted a gallery image in Member Collections
From the album: La Dominelais / La Noe Blanche - automnal prep - a few more to join the trilo army
Eodalmanitina sp and Ectillaenus Giganteus association from the ordovician shale south of Rennes/ France, collected in august 2018, finished in december 2018 -
I need help with another specimen that popped out of the Ordovician matrix I was busting up last week. I have NO clue as to what this is, or if it is even a fossil. I have split literally a ton of matrix on this roadcut and have not seen this before:
-
This little spherical trilobite is given to me as a gift by a French friend in an mineral and fossil exhibit in Beijing, who said it must be a Morocco ordovician species. Is it possible for me to get to know more here?
-
Stylophorans are Echinoderm? (Fezouata Lagerstätte, Morocco)
Oxytropidoceras posted a topic in Fossil News
Lefebvre, B., Guensburg, T.E., Martin, E.L., Mooi, R., Nardin, E., Nohejlova, M., Saleh, F., Kouraïss, K., El Hariri, K. and David, B., 2018. Exceptionally preserved soft parts in fossils from the Lower Ordovician of Morocco clarify stylophoran affinities within basal deuterostomes. Geobios. https://www.researchgate.net/publication/329204055_Exceptionally_preserved_soft_parts_in_fossils_from_the_Lower_Ordovician_of_Morocco_clarify_stylophoran_affinities_within_basal_deuterostomes https://www.researchgate.net/profile/Bertrand_Lefebvre2 Other PDF files of papers are: Fatka, O., Nohejlová, M. and Lefebvre, B., 2018. Lapillocystites BARRANDE is the edrioasteroid Stromatocystites POMPECKJ (Cambrian, Echinodermata). Neues Jahrbuch für Geologie und Paläontologie-Abhandlungen, 289(2), pp.139-148. https://www.researchgate.net/publication/326558585_Lapillocystites_BARRANDE_is_the_edrioasteroid_Stromatocystites_Pompeckj_Cambrian_Echinodermata https://www.researchgate.net/profile/Bertrand_Lefebvre2 Makhlouf, Y., Nedjari, A., Dahoumane, A., Nardin, E., Nohejlová, M. and Lefebvre, B., 2018, November. Palaeobiogeographic implications of the first report of the eocrinoid genus Ascocystites Barrande (Echinodermata, Blastozoa) in the Upper Ordovician of the Ougarta Range (Western Algeria). In Annales de Paléontologie. Elsevier Masson. https://www.researchgate.net/publication/329138078_Palaeobiogeographic_implications_of_the_first_report_of_the_eocrinoid_genus_Ascocystites_Barrande_Echinodermata_Blastozoa_in_the_Upper_Ordovician_of_the_Ougarta_Range_Western_Algeria https://www.researchgate.net/profile/Bertrand_Lefebvre2 Yours, Paul H.- 1 reply
-
- 5
-
-
- deuterostomes
- echinoderms
- (and 5 more)
-
I have looked at this piece for about 1 week and my opinion changes from a crinoid stem and calyx to a crinoid stem and broken gastropod and back. So I will now defer to anyone visiting this post to leave their opinion seeing I can't make up my mind. I have both specimens marked.
-
I fish alot on the Whitewater River here in Franklin County Indiana and look for fossils and rocks. I posted this photo under the rocks and minerals section and a member said that it could contain a mash up of small fossils. I just thought it looked like a rock that had odd patterns like little hieroglyphics, could they be tiny fossils? Linda
-
Question about the division between time periods. Ordovician vs. Silurian
Recker posted a topic in Questions & Answers
I have a question about the different time periods, I live in Southeast Indiana, Whitewater river area, within the Cincinnati region and Ordovician period. Having a hard time understanding this, will I only find Ordovician period fossils or could I find later period fossils like Silurian fossils? And why? You all have been so helpful and I appreciate it. Linda -
Getting My Feet Wet In the Ordovician of Wisconsin and Iowa
RCFossils posted a topic in General Fossil Discussion
2018 was the year that I finally took some time to explore Ordovician aged sites in Southwestern Wisconsin and Eastern Iowa. Inspired by past forum posts (special shoutout to Caleb Scheer who was unfortunately taken from this world way to young) along with an invite from a fellow Fossil Forum member, I was able to make several trips into the fossil rich Platteville and Maquoketa formations. I was mainly focused on finding some of the amazing trilobites that these formations are known for. I also collected some nice representative examples of the various other fauna. Most of my experience collecting Ordovician fossils has been in the Cincinnatian of Indiana, Ohio and Kentucky. For those not familiar with collecting in the Cincinnatian, the vast majority of trilobites that you will find are Flexicalymene meeki along with lots of bits and pieces of Isotelus. One of the things that struck me right away in the Platteville and Maquoketa was the quantity and diversity of trilobite types that are readily found. While almost all of the trilobites will be fragments, occasionally you get lucky and find something complete. There is definitely a learning curve sorting through the various trilo-bits and learning to recognize the various species. Forum member Piranha was always willing to help out with identifications. My first trip out was in late Winter. I spent a day with forum member Fossilized collecting a few roadcuts in both Wisconsin and Iowa. The first relatively complete trilobite that I came across that day was also possibly my rarest find of the year. It is a very rare Cheirud: Acanthoparypha sp. Unfortunately the cephalon was gone but still an impressive specimen.
- 57 replies
-
- 6
-
-
- maquoketa
- ordovician
- (and 2 more)
-
I found this while looking around the Whitewater River area, Franklin Co Indiana, Southeast Indiana. It's eroded a bit but could it be an internal mold of the top of a Cyclonema? Appreciate everyone's help! Linda
