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Showing results for tags 'Oligocene'.
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Last month my boyfriend and I went on our first ever trip to the Isle of Wight. We stayed for four full days and managed to squeeze in a fossil trip each day. On the first day we met up with one of my friends who was staying on the island with her boyfriend who is an 'islander'. We decided to visit the popular Compton Bay, an interesting and well known cretaceous site famous for dinosaur remains. When we arrived the tide was quite high and I didn't realise just how long it takes to go down (several hours, for future reference), but we were able to get onto the beach and walk a somewhat narrow strip of sand. After less than 10 minutes I picked up the first fossil! To me it looks like bone, but it has been loosely suggested to me it might be plant. It has a lot of iron rich matrix still attached to it which has unfortunately stained all my other fossils from this location as I desalinated them all in the same container (I would be glad to hear any advice for removing this staining?). Not 10 minutes after that I made the next find of the day, a small chunk of rolled bone. The tide was still very high so we decided to wander about the island and came back later that evening. Our lunch spot. The tide was lower in the evening and we had a wonderful time pointing out the dinosaur footprints, the trackway and finding pebbles full of shells, a pebbly full of bony fish bits and one more bit of bone for me and finally one for my friend as well (don't have pic of that though). Not sure how well the photos demonstrate this, but I think this may be a broken bit of a caudal vertebra. On day two we tried, and failed to get to Rocken End for some lovely ammonites. We couldn't find the right spot, so planned to try again the next day. In the afternoon we went to Bouldnor in search of some Oligocene turtles, crocodiles, mammals and whatever else we might find. However we were unlucky again and only found four chunks of Emys turtle shell. I am pleased with them though, as three of the four are really rather nice. It was a muddy but pleasant evening. Once again we had to wait a while (though 30 mins or so) for the tide to retreat. The first two pieces on the left were found within about 1m of each other. I'm not sure what to make of the 'stripe' on the top side of the third chunk. The next morning we found the correct access point and made our way to Rocken End, it's a fairly long walk down a steep hill(/mountain??) but wasn't as bad as it looked from the car park, there are steps carved into the mud at regular points. Soon enough we were scrambling over boulders of cretaceous upper greensand and pointing out ammonites that were poking out. Extracting the ammonites proved a significant challenge. They are incredibly delicate and soft. You could reach up and snap the ends out the rock very easily and practically all of the ammonites we attempted to extract came out in pieces, or broke irreperably. I did find two lovely little shark teeth sticking out, I believe these are somewhat uncommon here so I feel lucky. Just as we were leaving, my boyfriend found three ammonites practically lying on the ground in front him. They were by far the best ammonites we collected, he was very pleased with himself considering I had spent the previous two hours chiselling away whilst he sat and read his book... Prep in progress from the other side. The third one as found, just peeking out... ... and after some prep, it's still in the big block though, will (try to) cut a little pedestal out of the rock. Unfortunately the centre is missing. I also found a few beautiful brachiopods, bivalves and worm tubes - and also an echinoid! I have yet to ID any of these, but I think I actually prefer them over the ammonites, I wish I collected a few more.
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Associated sea turtle remains from Chandler Bridge Formation, South Carolina, U.S.A., 2021
fossil_lover_2277 posted a gallery image in Member Collections
From the album: Lando’s Fossil Collection
Associated remains of the sea turtle Carolinachelys wilsoni from an Oligocene lag deposit just outside the township of Summerville, SC.© Lando_Cal_4tw
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- chandler bridge formation
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Chandler Bridge Formation, South Carolina, U.S.A., 2021
fossil_lover_2277 posted a gallery image in Member Collections
From the album: Lando’s Fossil Collection
Collected from a public creek just outside the Summerville township.© Lando_Cal_4tw
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- chandler bridge formation
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. Lateral view of the same Psudomyrmex inclusion in the previous entry. The antennae appear to have clubbed tips, but each is actually coated/overlain by a congealed drop of resin within the amber itself (this type of suspended resin formation is characteristic of and common in Indonesian amber).© Kaegen Lau
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. This inclusion is most likely a winged ant of the Pseudomyrmex genus, although it may possibly be a wasp. A positive identification of both winged subjects is challenging, due to their deteriorated state and their position within the piece.© Kaegen Lau
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. This displays 3 of the 4 inclusions contained in the piece itself, each one a Pseudomyrmex sp. (the winged ants may possibly be wasps, but it is unlikely).© Kaegen Lau
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. The inclusion is that of a well-preserved Pseudomyrmex sp. of ant. There is very little documentation, written or photographic, of the flora and fauna inclusions in Indonesian amber, unfortunately.© Kaegen Lau
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. The inclusion is that of a slightly deteriorated specimen of Pseudomyrmex sp. of ant. There is very little documentation, written or photographic, of the flora and fauna inclusions in Indonesian amber, which makes me all the more excited to have discovered this piece!© Kaegen Lau
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From the album: Fossil Amber and Copal: Worldwide Localities
4.3g dark, transparent blue amber from West Sumatra. After grinding and polishing, I was surprised to discover that it contains 2 ants and 2 winged ants (possibly wasps); these were a little tricky to photograph, due to the amber's strong fluorescence under 140 lumen LED light, so these inclusions had to be backlit. I used a Canon EOS 500D, Canon 60mm f/2.8 Macro Lens, and combined 2x and 4x Hoya circular magnifier lenses (8x).© Kaegen Lau
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Palm-sized piece roughly 80g in weight, from the 2 previous entries. This photo better displays the surface fluorescence of the specimen.© Kaegen Lau
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Palm-sized piece roughly 80g in weight, from the previous entry. Transmitted light through the deepest portion of the piece displays the amber's deep red coloration.© Kaegen Lau
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Palm-sized piece roughly 80g in weight. There is a very thin layer of coal on the top and bottom of the piece, making it a good example of a seam-type formation. It's blue coloration is purely surface fluorescence, initiated in this case by a 140 lumen LED light; this fluorescence (especially under a non-LW UV light) is caused by the presence of an exceptionally high concentration of various hydrocarbons contained within the amber.© Kaegen Lau
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Member Collections
From the album: Fossil Amber and Copal: Worldwide Localities
Small (5-8g) partial nodules of raw blue amber from the east flank of the Bukit Barisan range of West Sumatra. These pieces are clear as glass, and fluoresce very nicely under a 140 lm LED light. *This Sumatra material (and Indonesian amber in general) is believed to have been produced by a parent tree belonging to the Dipterocarpaceae family; it's spectroscopic signature is also incredibly similar to Bitterfeld amber (also produced by a dipterocarp source tree). **This blue amber's particular locality is part of the Sinamar Fm., and the layers containing the resin are dated to be approximately 30 Ma (Oligocene, mid-Rupelian); the amber-bearing strata of this formation is located at a depth of approximately 32-39 m, and is composed of hard, banded coal (sub-divided into two layers of slightly different grades, 2.5m and 4.5m thick). I have 15 pieces, and these are the ones I haven't yet pre-formed. The piece in the upper-right corner is pre-formed (diamond needle files), and it is ready for increasing grades of sandpaper (240-3000 grit), and a final polish with a denim cloth and polishing compound (ZAM).© Kaegen Lau
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Hello everyone, Been a while since I made a post. Back in December I found a nice shell: Looting Lincoln Creek - Fossil Hunting Trips - The Fossil Forum. I'm not good with shells, I assume it's a conch of some kind. Anyways, having it out of the matrix has renewed my interest in it, and I was hoping someone might be able to tell me what kind of shell it is. Was also wondering if anyone knows a way I could keep it from falling apart, maybe with something I can coat it in. Just holding it for the picture, it felt like it was about to crumble to pieces. It is from the Lincoln Creek Formation in Washington, and dates back to the Oligocene.
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New Zealand Kids Discovered Fossil of New Giant Penguin Species on a Field Trip
Oxytropidoceras posted a topic in Fossil News
New Zealand Kids Discovered This Fossil of New Giant Penguin Species on a Field Trip Paleontologists say the bird would have been roughly the size of a ten-year-old child Corryn Wetzel, Smithsonian Magazine, September 17, 202 Children's Field Trip Yields New Penguin Species Kairuku waewaeroa lived eons ago in New Zealand John Johnson, Newser, Sep 17, 2021 The open access paper is: Simone Giovanardi, Daniel T. Ksepka & Daniel B. Thomas, 2021. A giant Oligocene fossil penguin from the North Island of New Zealand Article: e1953047 Received 15 Mar 2021, Accepted 01 Jul 2021, Published online: 16 Sep 2021 Yours, Paul H.- 1 reply
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- glen massey formation
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A few weeks ago I completed a road trip from New Jersey to Texas for work and although Hurricane Ida sadly canceled nearly all of my plans, I was able to sneak in a couple quick fossil collecting stops. One such stop was at an outcrop of the Oligocene Vicksburg Group in Mississippi. I was primarily looking for echinoids- I sadly did not find any- but ended up finding this small shark tooth. I am by no means an expert on shark teeth and have tried in vain to research Oligocene sharks of Mississippi. Does anyone know what shark this tooth is from or of a good resource where I might be able to figure it out? It strikes me as similar to photos of Carcharhinus gibbesi from the Chandler Bridge Formation (see D in attached photo). Any help is greatly appreciated! Source: Late Oligocene Sharks and Rays from the Chandler Bridge Formation, Dorchester County, South Carolina, USA
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Since the spring my wife and I have been very busy with the garden and the orchard to maintain, the canned vegetables from our production, and we decided last Thursday to take a break for a geological excursion south of Clermont-Ferrand. The goal was twofold, to search for stromatolites and to take advantage of the volcanic context of the region. The detailed geological map of this area is unavailable but we had serious research ideas for our prospecting. The day began with a visit to a magnificent village that immediately immersed us in the context: Saint Saturnin. The walls of houses often combine basalt and limestone from the surrounding area. Usually tourists look at the fountain or the castle from a distance, but some are more original ... So, let's look at some examples in the walls of the houses in the village.
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- extinct volcano
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I’m looking to trade some of my fossils for some new mammal material. Interested in carnivores, megafauna (focus on sloths but everything is of interest), titanothere fossils, but I’m willing to hear any mammal offer. Primarily interested in trading for teeth but always interested in hearing others too! Will provide any further pictures requested for interested people! Pretty little Chub, I don’t have any locality info on it but it is a nice little guy. 1.72” Attractive little Low Country Meg. 2.13”. Some Pleistocene armadillo scutes and turtle spurs. The scutes are from Texas, the Spurs are from Florida. Largest spur is about 1.5” across, largest scute is 2.33” long. Really nice group of Cretaceous Gar scales from Hell Creek. Many sizes and colors here! Mix of Cretaceous Shark Teeth from Texas. Nice colorful little bunch in a floating frame case. Largest tooth is .81”.
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I've noticed that despite finding loads of petrified wood deep in East Texas (around Jasper, just east of Lake Sam Rayburn), I've never heard of any vertebrate material being uncovered in the area. I specifically spend a lot of time hunting petrified wood on the catahoula formation ( which is Oligocene) when I'm there, and there's definitely no shortage of said petrified wood. If so many trees are fossilized, shouldn't there be fossils of the animals that lived along side them too?
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Made my first fossil hunting trip to South Carolina, went to some areas around Summerville, thought I’d share pics of some of the fossils I collected! The best finds were some echovenator-like teeth, Angies, great whites, some intact sections of dugong ribs, and several associated pieces of a sea turtle shell. Felt like Indiana Jones exploring all the creeks trying to find productive spots haha. Fun trip, hope to return in the future!
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Hi guys, I have a few bits and bobs I would really appreciate help with identifying, let me know if you need better photos of anything thanks for your help lets start with some Oligocene stuff from Yarmouth, 1. Some kind of skull element, what from though? 2. This is very weird, it does remind me of a tiny croc scute though 3. Some kind of ankle bone? and some from the lower greensand of whale chine, Isle of Wight, it is a coral, but not the usual holycites elegans, a book I read mentions a very rare mushroom shaped coral, like this maybe? So what do you think it’s about 13 cm long
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I was recently out vacationing in Wyoming and spent Saturday morning (7/24/21) hunting in the badlands. As I sat down to rest for a moment, I looked down and saw what I thought were a radius/ulna pair from a small mammal. Upon closer inspection, it was a pair of lower jaws freshly exposed on the edge of a nodule and on the backside, a small skull. Needless to say, I was ecstatic. I spent a bit of time making sure the specimen was consolidated (Paleobond Penetrant, wish I had brought some 4417) and packed it up for the trip home. I was thinking it would make a great Vertebrate Fossil of the Month but as I am unsure of my identification and being a skilled preparator, I thought it would be more interesting to show the process. I do suspect the specimen to be the marsupial, Herpetotherium fugax. However, without seeing the teeth, this is mostly a guess. I do have another specimen with a similar endocast which is what I am using as my basis for an identification at the moment. Though I am quite unsure if the endocasts of the Insectivores have the same character. Pardon my anatomy if I get this wrong but there is a fold between the parietal lobes and the occipital lobe that you can see in the above photo and that is what I'm guessing my ID on. Once we get the teeth exposed, we will know for sure. Here are the pieces on my desk with some better lighting and measurements. A bit of cranium on the negative. The top of the skull. And the lower jaw that was seen exposed. The plan is as follows: 1. Clean the blocks of any mud/loose chips 2. Glue the blocks solidly back together 3. Bulk matrix removal with pneumatic tools (ARO/Paleotool Microjack-3) 4. Fine matrix removal under a scope/micro abrasion I'll write up each step as I progress. Enjoy! And @jpc I apologize for not visiting you, but it was a whirlwind trip. I'll catch you next time!
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Picked up a few more shells from the Lincoln Creek Formation while out on a walk, and thought it would be fun to make a composite piece with them. Was pretty easy, just used superglue to fix a couple of moon snails and a scaphopod to a tiny slab of shale from the formation. For my first composite piece I don't think it looks bad, but I was obviously a little too excessive with the glue.
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I bought this large jaw section at MAPS a couple years ago. It was labeled fossil jaw Badlands and that's it. I've collected the Badlands of Nebraska, Wyoming, and South Dakota many times and built a large collection of fossils from these localities. However this jaw has stumped me. My thought was the large Miocene Oreodont Promerycochoerus. Any input will be appreciate. The size of the jaw is 153mm or a little over 6 inches long. The rear molar is 50 mm or 2 inches long. Thank You.
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Alternative combinations: Diaphus moravicus and Leuciscus moravicus. Taxonomy according to Fossilworks.org. Description of Oligophus moravicus according to Přikryl et al. 2017, pp. 219-220: “The following description is based on the almost complete specimen Tv 1023a and its counterpart specimen Tv 1023b. They show a preorbital length much shorter than orbit diameter. The head is rounded, with an antero-dorsally oriented mouth. The lower jaw joint is located far posterior to the posterior-most margin of the orbit. The maxillary is slender throughout. There is no indication of a supramaxilla. The cleithrum seems to be delicate without well-developed posterior lamina. The vertebral column is not completely preserved in any of the specimens, but the total number of vertebrae seems to be 34 or 35. Remains of ventral procurrent rays are recognizable and therefore the vertebral number cannot have been much higher; about 16 centra are abdominal. Nine pairs of ribs are preserved. The pectoral fins are long, reaching the level of the posterior third of the abdomen, and are composed of about 13 rays. The pelvic fins are located below the dorsal-fin insertion and consist of seven or eight rays; the pelvic girdle is inadequately preserved. The dorsal fin is located at midlength of the body length and is composed of slightly more than 11 rays. The anal fin contains 12 or 13 rays. The body is covered by cycloid scales. The individual photophores are slightly thickened and although the complete photophore formula is not recognizable, a reconstruction of the preserved part shows the pattern reported in Figs. 3 and 4. The fish is slightly distorted midventrally, so that the photophores of the right side area appear to be located higher than on the left side (colour-coded in Fig. 3). The photophores appear to be lens-like. There are faint indications of two photophores just above and below the pectoral-fin base which could represent the PLO and the upper PVO. The four rear PO are preserved, with PO4 being slightly elevated. Five VO, none of them elevated, and three SAO are clearly discernable, the three SAO being located on a straight upward directed line. The AO sequence is apparently incomplete posteriorly and appears to be separated in an anterior and a posterior part. Other photophores are not clearly recognizable. The inner faces of both the saccular otoliths of the specimens Tv 1023a and Tv 1023b are exposed (Fig. 5A, B). The overall outline of the otolith is moderately elongate with a long rostrum, a depressed predorsal rim, a strongly developed and far backward positioned postdorsal angle, a blunt posterior rim and a regularly bent ventral rim. The length to height ratio of the otolith is 1.2 to 1.3. The ventral rim bears 7 strong denticles. The length of the rostrum is about 15% of the otolith length; excisura and antirostrum are weak. The inner face shows a slightly supramedian positioned sulcus with the ostium being longer but slightly narrower than the cauda. The ratio between the length of ostium and cauda is 1.3-1.5. A ventral pseudocolliculum is well developed below the caudal colliculum. The dorsal field bears a large dorsal depression; the ventral field shows a distinct ventral furrow at some distance from the ventral rim of the otolith. The inner face is nearly flat. The outer face is exposed in the specimen Tv 1025 and is distinctly convex and smooth with a postcentral umbo.” Line drawing of Oligophus moravicus from Přikryl et al, 2017, p. 220. Identified by oilshale using Přikryl et al. 2017. References: Pauca, M. (1931): Zwei Fischfaunen aus den oligozaenen Menilitschifern von Mähren. Annalen des Naturhistorischen Museums in Wien 46: 147-152. Prokofiev, A. M. (2006): Fossil Myctophoid Fishes (Myctophiformes: Myctophoidei) from Russia and Adjacent Regions. Journal of Ichthyology 46 (Suppl. 1): S38-S83. DOI: 10.1134/S0032945206100043 Gregorova, R. (2004): A new Oligocene genus of lanternfish (family Myctophidae) from the Carpathian Mountains. Revue de Paléobiologie, Genève 9: 81-97. Přikryl, T., Schwarzhans, W., Kovalchuk, O. (2017): Lanternfishes (Myctophidae) with otoliths in situ from the Early Oligocene of the Eastern Paratethys (western Ukraine). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 285 (2): 213-225. https://doi.org/10.1127/njgpa/2017/0678
