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Showing results for tags 'pliocene'.
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From the album: Recent Finds
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Hello to everyone ... cheers from Italy Michele
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November is the closing month for shows here in northern Spain. Although I wasn't going to spend a lot of money, I see this group, and I couldn't say no... It came home with me... Ya know! Hehehe! Most of it pliocene stuff, except for the very well preserved Persististrombus latus, from middle pleistocene. All of it comes from an old collection. From pliocene/pleistocene layers of southern Spain
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Iceland's First Pliocene Fossil Whale (Partial Skull Element) Found
njfossilhunter posted a topic in General Fossil Discussion
Being a native or born in Iceland and being a fossil nut who loves fossil whales and other Marine Mammals I am specially proud of a recent discovery and a Publication Of Iceland's first and only known fossil Whale from the Tjörnes Formation. in the early Pliocene. One of our own forum member Boesse was one of the co-author's that worked on the scientific paper about this whale. Well I will let you read a copy of the paper. .....I hope you all enjoy it and if Boesse is reading this I would like to thank you for telling me a few years back about you working on this specimen which made it easy to find because I follow you on Twitter. Field_et_al-2017-Palaeontology.pdf- 1 reply
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Found in Missouri river , feb. 19th. From pictures I've seen , it looks like prehistoric horse, maybe bison. Any guesses? stuitprt_201702171033254917[848].pdf
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From the album: BONES
Fossil fish vertebra from the well of a gun-pit in a phosphate mine, Polk County, Florida. This vertebra exhibits hyperostosis, an overgrowth of bone, found mostly on the vertebrae and internal spines of some fish. The perforations alongside the centrum may represent what's left of the neural and haemal canals of the vertebra.© Harry Pristis 2015
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Hey all, yesterday my wife (CCNHM collections manager Sarah Boessenecker) and I wrote about some of our recent finds from Folly Beach, SC. Collecting fossils there is quite easy, and if you're there for non-shark teeth, there's essentially no competition since that's all anyone ever looks for there. The fossils of Folly Beach have never been written up, and I'm getting more and more curious about them - particularly fossil marine mammals. If anyone finds marine mammal earbones out there, I'm dying to take a look! We've already gotten a nice donation from Ashby Gale, Edisto SP ranger, of a pygmy sperm whale periotic. Here's the blog post with some images of our recent finds - including my first giant armadillo scute (Holmesina), an Alligator osteoderm, various shark and mammal teeth, and a snake vertebra. I've made a plan to go out to Folly once a week this entire semester, since it's only a 15-20 minute drive from College of Charleston (a very nice escape from campus and teaching) http://blogs.cofc.edu/macebrownmuseum/2017/02/03/friday-fossil-feature-it-would-be-folly-to-pass-this-site-up/
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References: Link: Earth Science Week 2001 Field Trip #2 Fossils and Ancient Lakes
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From the album: Vertebrates
Gasterosteus doryssus JORDAN, 1907 Stickleback Pliocene Zanclean Middle Truckee Formation Eagle Picher diatomite mine Hazen, Lyon County Nevada USA -
Taxonomy from Fossilworks.org. Diagnosis from Gaudant 1997, p. 23 (translated from french by oilshale):"Perches that differ from the present species Perca fluviatilis L. by their sagitta possessing a relatively massive rostrum with a rounded anterior end, by the composition of the posterior dorsal fin which has 11 to 13 lepidotriches, whereas Perca fluviatilis L. generally has 13 to 16, and finally by the smaller size of their scales, the number of which can be estimated at about 65 to 80 along the lateral line, whereas it is 60 to 70 in Perca fluviatilis L." Identified by oilshale using Gaudant 1997. References: Weiler, W. (1933) Die Fischreste aus dem Oberpliocän von Willershausen. Arch. Hydrobiol. 25. p. 291-304. Gaudant, Jean (1997): L'ichthyofaune pliocène de Willershausen am Harz (Basse Saxe, Allemagne) – un réexamen. Stuttgarter Beiträge zur Naturkunde / B; 1997, 51 p.10 pl., 24 fig.
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Here is a trip report from an area that rarely is mentioned in this forum. Last December we had a family trip to the islands of Lifou and Mare in New Caledonia, in the south west pacific. These islands are raised coral atolls, and due to their location at the point where the Australian Plate meets the Pacific Plate the islands experienced an uncommon amount of uplift, leading an unusually large amount of exposed underlying limestone. Lifou is the world’s largest raised atoll, it is about 80km/50mi long, Mare is slightly smaller but is probably the second or third highest uplifted atoll reaching up to 138m above sea level. The other unique thing about these islands is the abundance of living fossils, in the form of Arucaria trees. The Arucaria genus dates back as far as 200 million years, of the 19 species remaining today, 13 are only found in New Caledonia. These trees give a distinctly prehistoric feel. New Caledonia is also the only place in the world were the Amborella plant can still be found, it is the closest and oldest relative of the very first flowering plant which emerged about 160 million years ago. The uplift took place between 7 and 2.5 million years ago, and as far as I can tell most of the marine fossils were deposited between about 5 and 2.5 million years ago. The uplifting and changes in sea level were sometimes quite abrupt, leading to distinct boundaries between different epochs of coastline. The eroded section on this cliff shows where the sea once lapped the shore, and then in a short period the land rose or sea fell by about 15 metres leaving the former shore high and dry. This formation runs like this for at least 40km along Lifou’s east coast. On Mare the abrupt sea/land level gave rise to this “wedding cake” formation where 2 former coast lines can be clearly seen above the present one. In areas where the limestone is weaker and the weathering gentle the preservation can be remarkable, such as this clump of corals and shells which was under a ledge protected from direct rain and sun. It is hard to believe these are probably around 3-4 million years old. In some places entire corals remain in their original formation, such as this example which about 1m wide and 1.5 m high. In places on the rockshelf fossils have been naturally polished by the sea. I didn’t have any tools and was not sure if I should be hacking into the rocks so I just collected a couple of items that were lying around, but they give an idea of how much fine detail was preserved.
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My first and to date only Lee Creek Cookiecutter tooth. A rare species from Lee Creek.
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Another Interesting Ostracode From The Coralline Crag Formation
Rumi posted a blog entry in Microfossil Mania!
In picking out my sample of microfossils from the Middle Pliocene Coralline Crag Formation, Suffolk, England, I noted a few fragments of what appeared to be a species of the ostracode genus Pterygocythereis, a particularly spiny-looking genus of the family Trachyleberididae. I assumed it to be Pterygocythereis jonesi (Baird, 1850), the common species of the North Sea. As luck would have it, while finishing the picking of the last bit of the sample, up popped a complete valve, in almost perfect condition. To my surprise, it turned out not to be the common North Sea species; rather, it is Pterygocythereis siveteri Athersuch, 1972. The image does not do it justice, as even with image stacking software, the great length of the alae and the 3-D spininess are not very apparent. (Published dorsal views of the complete carapace are quite impressive!) Further cleaning of the specimen should greatly improve its appearance. In the standard book on the recent Ostracoda of Great Britain, we find the following: "British records of P. siveteri are sub-Recent, and there are, as yet, no live records outside the Mediterranean." (Athersuch, Horne and Whittaker 1989: 146) Presence of this species thus provides further evidence that the Middle Pliocene sea around southern Great Britain was warmer than it is now, and that the ostracode fauna was essentially Lusitanian, characteristic of the modern Mediterranean Sea and of the Atlantic Ocean off the northwest coast of Africa. The genus Pterygocythereis today is commonly encountered in the sublittoral zone, down to a depth of about 200 meters. Faunal studies of the Coralline Crag have suggested that it was deposited in a high energy environment with a maximum depth of about 20 meters, which seems to fit. However, this species is rather rare in the Coralline Crag, suggesting that it may not have been a member of the original, local biocoenosis. Athersuch, J., D. J. Horne, and J. E. Whittaker, 1989, Marine and Brackish Water Ostracods, The Linnaean Society of London.- 10 comments
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A very common insect in the sediments of Willershausen. Taxonomy according to Kohring & Schlüter 1993. Line drawing of the forewing from Kohring & Schlüter 1993, p. 194: Identified by oilshale using Kohring & Schlüter 1993. Reference: Kohring, R & Schlüter, T. (1993): Sciariden (Insecta: Diptera: Nematocera) aus dem Oberpliozän von Willershausen. Berliner geowissenschaftliche Abhandlungen (E), 9, p. 191-199; Berlin
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Taxonomy from Fossilworks.org. Diagnosis from Gaudant 1997, p. 9 (translated from french by oilshale):"Tench with scalloped caudal fin whose length of the axial lepidotriches equals approximately 2/3 of the length of the longest rays of each lobe. Spinal column composed of 36 to 39 vertebrae. Body covered with large cycloid scales of oval shape." Identified by oilshale using Gaudant 1997. References: Weiler, W. (1933) Die Fischreste aus dem Oberpliocän von Willershausen. Arch. Hydrobiol. 25. p. 291-304. Gaudant, Jean (1997): L'ichthyofaune pliocène de Willershausen am Harz (Basse Saxe, Allemagne) – un réexamen. Stuttgarter Beiträge zur Naturkunde / B; 1997, 51 p.10 pl., 24 fig.
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Taxonomy from Fossilworks.com Identified by oilshale using Sorbini 1987. References: SORBINI, Lorenzo (1987) BIOGEOGRAPHY AND CLIMATOLOGY OF PLIOCENE AND MESSINIAN FOSSIL FISH OF EASTERN-CENTRAL ITALY. Boll. Mus. Civ. St. Nat. Verona", 14, pp. 1-85.
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Recent Aeoliscus strigatus in head-down tail-up position as an adaption for hiding among sea urchin spines. (Picture from Wikipedia, own work of Haplochromis) Taxonomy from Fossilworks.org. Description for the recent A. strigatus from GBIF.org: "Body elongate, strongly compressed, and blade-like. Head elongate; snout long, slender, and tubular; mouth small, toothless, located at tip of snout. Interorbital space striated, convex, without a longitudinal groove. Two short-based dorsal fins; first dorsal-fin spine hinged at its base, slightly movable, with a movable spinous ray at its end; all other spinous and soft portions of dorsal fins on ventral surface of body; caudal fin small, on ventral surface, nearly at right angle to body axis; pelvic fins small, with 4 short soft rays, originating at or behind midbody. Lateral line absent. Body enclosed in a flattened, transparent, bony casing with sharp ventral edge. Colour yellowish brown to pale green on back, silvery on sides; conspicuous black stripe running from the snout, through the eye, to the base of spinous dorsal fin." Identified by oilshale. References: SORBINI, Lorenzo (1987) BIOGEOGRAPHY AND CLIMATOLOGY OF PLIOCENE AND MESSINIAN FOSSIL FISH OF EASTERN-CENTRAL ITALY. Boll. Mus. Civ. St. Nat. Verona", 14, pp. 1-85.
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References: Earth Science Week 2001 Field Trip #2 Fossils and Ancient Lakes
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Found in an area I believe to be Pliocene. Can you help with ID of species please. Thanks.
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References: Schmidt, G. (1967): Die Bockkäfer (Cerambycidae) von Willershausen. Berichte der Naturhistorischen Gesellschaft Hannover 111, 1967, 113-120. Schweigert, G. (2003). Alpenbock und Hirschkäfer im Pliozän von Willershausen. Fossilien 20, 178-182. Gersdorf, E.: Dritter Beitrag über Käfer (Coleoptera) aus dem Jungtertiär von Willershausen, Bl Northeim 4226. Geologisches Jahrbuch A 36, 103-145.
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Future of Pliocene Trackway Site in Death Valley National Park Under Consideration
Oxytropidoceras posted a topic in Fossil News
Ancient beasts roamed this secret spot in Death Valley Washington Post, Dcember 2, 2016 https://www.washingtonpost.com/national/health-science/secret-spot-in-death-valley-contains-evidence-of-ancient-animals/2016/12/02/7542aafe-b722-11e6-a677-b608fbb3aaf6_story.html Death Valley's 'secret' fossil canyon could finally be opened to the public after being hidden for almost a century 1. Remote fossil hotbed covers an area of around five sq miles (12.9 sq km) 2. The area was closed to the public in 1940 to preserve the cache of tracks 3. The US National Park Service, which is celebrating its centennial year, has been called on to open up the forbidden area to visitors http://www.dailymail.co.uk/sciencetech/article-3989588/Death-Valley-s-secret-fossil-canyon-finally-opened-public-hidden-century.html Death Valley's hidden fossil canyon slowly opens to public San FranciscoGate, November 17, 2016 http://www.sfgate.com/news/article/Death-Valley-s-hidden-fossil-canyon-slowly-10621796.php Yours, Paul H. -
The first large meg and the best condition to date that I have from Greens Mill Run in Greenville North Carolina.
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Hey guys and gals! Went out on Sunday to a new site and had a look around. Managed this! I didnt bother plastering this as it was all in loose pieces. There was a 4th piece under the sand and, just above the right hand side of the digging thing you can see another bit of bone - i don't know if its related but i need to go back and get it. So here is the bit at the top in the above picture. And having cleaned it up i realized i needed to leave matrix in the tooth sockets to support the weak bits that hang out. Lesson learnt and i'll do that on the next section. You can see where i ended up leaving some matrix. Also the jar is paraloid. This bone is weak and chalky! Fortunately, as i get closer to the front there is more bone and it's more intact. Here is the next piece along, viewed from the top and showing the sockets. (i'll clean them out a bit to show the shape better) And here is how the 4 pieces go. The front 2 and the back 2 will join well, to each other, but the middle may not. Hoping they will but doubting at the moment.. Too much matrix to tell right now.. Its sort of a sandstone. Bit sticky and annoying. Getting there though. Thats all for now. I'll do more on the 2nd piece tonight and hoping to have it finished by Sunday. Cheers.
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I decided to check out a couple of Yorktown Formation outcrops along a river this weekend to see what damage the recent flood from Hurricane Matthew has done. These outcrops are nearly vertical walls with layers of fossil shells. One of the outcrops was rejuvenated by the floods and the other completely buried. This first photo shows the mudline in the trees where the flood waters reached. The second and third show the slumping of the outcrop that completely buried the fossils.
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Sharing for fun. Some of the fossils we've found in a large pit dug in Suffolk, VA where the sea level hasn't been in thousands, or maybe millions, of years. https://goo.gl/photos/6oDYj3mdYvjNvzRb6
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