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Showing results for tags 'oligocene'.
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I didn't get out hunting much last year, still working on figuring out how to research and find spots, but a friend of mine invited me out to do some collecting at one of his spots up in Washington State. I took some family with me and we went out over the Winter break in mid December. Pretty cold but beautiful! We're mainly looking for concretions weathered out of the formation, but occasionally you find Callianopsis claws loose in the formation, usually very brittle and in poor condition. Lots of mollusks to be found as well as crustacean
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Taxonomy from Fossilworks.com. The occurrence of Trachinus minutus is limited to the lower part of the IPM2 zone, which has been delineated within the frame of the biostratigraphic fish zonation in the Polish Oligo-Miocene sediments by Kotlarczyk and Jerzmańska 2006. Diagnosis from Jerzmańska 1968, p. 453 (translated from french by oilshale):” Preopercule with 5 spines, one of them longer. Operculum with 2 spines. 30-31 vertebrae. In the first dorsal 6 spines, in the second 18-20 rays. Anal with 22-23 rays.” Line drawing from Prikryl 2017, p. 77: Identified by
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Hello, I have just received this partial lower jaw, it is supposed to be from Leptomeryx evansi, but i have seen many skulls of L. evansi on the internet, and this doesn't look similar. It comes from the Oligocene of Orella member, Brule formation; South Dakota. I have got three questions; Who did this jaw belong to? What part of the jaw did these teeth occupy? Is that hole on the first photo normal? Or was made by an animal or disease? Thanks to everyone!
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Washington State Ghost Shrimp Claws: Defensive and Feeder
Neanderthal Shaman posted a topic in Fossil Preparation
I'm fairly new to fossil preparation. After a trip to the Olympic Peninsula back in November, I had a ton of concretions and no way to see what was inside. At first a tried splitting them with a hammer, but after busting a perfectly good claw into a million pieces, it was clear that I needed some actual preparatory equipment, either an air scribe or a Dremel 290. I went with the 290, and for the last month I've been working through the concretions. Most of them are duds, either empty or just a small piece of exoskeleton at the center. I unearthed a pretty solid looking defensive claw a few wee- 5 replies
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Members Gallery
From the album: Fossil Amber from Around the World
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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Taxonomy from Fossilworks.com Diagnosis from Danil'chenko 1960, p. 29: "Trunk height equal to length of 24-26 midlength vertebrae. Ventral profile of body rises sharply, almost at right angle at beginning of caudal region, where the body height decreases to approximately one half. Body height in vertical with anterior ray of anal fin corresponding to only 35-40% of the maximum body height and equal to the length of 10-11 vertebrae. Maximum body height 1.5 times head length; latter equal to the length of 15-16 anterior vertebrae. Mouth slit oblique, forming angle of 50-60° with the longitu
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- hatchetfish
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Summerville South Carolina whale or dolphin atlas vertebra?
fossil_lover_2277 posted a topic in Fossil ID
Hi all, I found this piece of bone in the Oligocene Chandler Bridge formation in an area just outside the town of Summerville South Carolina. Is this potentially one of the halves of a whale or large dolphin atlas vertebra? -
From the album: Fossildude's Purchased/Gift Fossils
Small plate of Syngnathus incompletus. Oligocene, Poland.© © 2016 Tim Jones
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Combing for Concretions on the Olympic Peninsula
Neanderthal Shaman posted a topic in Fossil Hunting Trips
Hi everybody, Boy, it's been a while since I made a post, but then it's been a while since I did any kind of fossil hunting. A friend of mine who I met while volunteering for a nature center invited me out on a camping trip to the Olympic Peninsula. He claimed to know a couple beaches where the concretion game is really good, and he sure wasn't wrong! The weather was mostly terrible; bitter cold and heavy rain punctuated by occasional blue sky, but when you love beachcombing as much as we do, you forget about it! This is the Pysht Formation at Twin Beach. Lots o -
I've been in the lab this fall/winter but preparation has taken a back seat to the plastics/replicas operations. As things start to wind down with plastics around this time of year, I'm embarking on my next prep project. This specimen is from the same Wyoming locality as the Herpetotherium I posted about recently but was found many years ago(~15?). It appears to just be an upper skull of a small rodent but there is some hope for lowers. I pulled this piece out of its field packaging in April but just now starting preparation in earnest. So far, all I've done is rough prep around the bound
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Taxonomy from Prikryl et al. 2014. Diagnosis from Prikryl et al. 2014, p. 694: "This species differ from the other species in the greater number of spines in the first dorsal fin (VIII or IX vs. VI in P. rebeli and VII in P. pietschmanni); by presence of 25 rays (first is probably spinous) in the second dorsalfin vs. I + 23 in P. rebeli and I + 27 in P. pietschmanni; lower number of rays in anal fin (28 rays with unrecognizable spines vs. II + 32 in P. rebeli and II + 40 in P. pietschmanni); and by presence of small teeth on the premaxilla (vs. relatively large teeth in the other species)
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- propercarina
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From the album: Vertebrates (other than fish)
5cm. long. Piece of tortoise bone. From the Oligocene deposits at Crawford Nebraska, USA. Thanks to my Secret Santa Crusty Crab. -
Magnoliacea sp leaf?oligocène St Bauzille de Putois. south of France
nala posted a gallery image in Members Gallery
From the album: Plants
Magnoliacea sp leaf?oligocène St Bauzille de Putois. south of France -
From the album: Miscellaneous
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- chandler bridge formation
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From the album: Brachiopodes, Shells, corals, sponges......
Ostracodite Oligocéne Allier France -
Serious, experienced replies, please! This 0.5 cm long object is attached to a broken coprolite from the Eocene/Oligocene of NW Nebraska. Trying hard to figure it out. Wrong twexture for a tooth and it doesn't look like a seed, either. I have a guess, but right now a guess is all I have. Any coprolite specialists out there? I know the pictures could be better, but I don't have a microscope out here in the field.
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Taxonomy according to Bieńkowska-Wasiluk et al. 2018. Bieńkowska-Wasiluk et al. 2018, p 75: “Small perch-like fishes, common in the Oligocene of the Outer Carpathians, have been traditionally assigned to the perciform species Serranus budensis (Heckel, 1856) (see Paucă, 1933; Jonet, 1958; Jerzmańska, 1968; Kotlarczyk et al., 2006). This species has also been reported in the Oligocene of the Caucasus and the Upper Rhine Graben (Danil’chenko, 1960; Pharisat, 1991; Micklich, 1998; Pharisat and Micklich, 1998; Prokofiev, 2009; Bannikov, 2010). Recently, Prokofiev (2009) selected S. budensis a
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In North Florida, we looked for Blue Agatized Coral and found some in a stream. At home we cut and polished them. We put together a video showing the whole process: https://youtu.be/aae9XqJPMCU best wishes, Lloyd
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- blue agatized coral
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My younger son Mel just led his first fossil trip of the year on our Oligocene M&M Ranch in Nebraska last week. My sons, Mel and Marco Jr., are starting to get back from their prepper some of the fossils that they found on our ranch in 2018. Not all fossils go to the prepper. Mel preps some of the specimens himself. Below is a picture of the specimens Mel found in 2018 that he will prep. Here are a few pictures of 2018 specimens just back from the prepper.
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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 some
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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 Members Gallery
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, South Carolina, U.S.A., 2021
fossil_lover_2277 posted a gallery image in Members Gallery
From the album: Lando’s Fossil Collection
Collected from a public creek just outside the Summerville township.© Lando_Cal_4tw
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Today I got this mostly complete Subhyracodon skull from the White River formation, South Dakota. Right now it still looks a bit rough since it's been crushed a bit and there's a bunch of sediment stuck all over the place. The specimen has been pretty well stabilised. So it's not very fragile thankfully enough. Almost all the teeth are present. Only one maxillary tooth is gone and the very tip of the premaxilla is gone. The 2 posterior premax teeth are still there, but the anterior ones are gone. Roughly half of the braincase is also missing on the back of the skull. Otherwise the skull is qui
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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Members Gallery
From the album: Fossil Amber from Around the World
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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Sumatra Blue Amber (Sinamar Fm., ~30 Ma)
Barrelcactusaddict posted a gallery image in Members Gallery
From the album: Fossil Amber from Around the World
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
