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The San Diego River flows through the county, from east to the west. The Mission Valley has all kinds of fossils...I am going to start releasing my collection...unfortunately so much development has destroyed some awesome stuff...I have a couple amphibious sturgeon looking specimens 6ftplus...
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Why the Foulden Maar, New Zealand, fossil site is worth preserving
Oxytropidoceras posted a topic in Fossil News
Life in maars: why it’s worth protecting a spectacular fossil site NZ almost lost to commercial mining interests John G. Gordan and otehrs, The Conversation, July 20, 2023 Foulden Maar: Dunedin City Council saves fossil site from mining by buying land RNZ, February2, 2023 Saving Foulden Maar-GSNZ lnvolvement Daphne Lee, Bruce W Hayward and Jennifer Eccles GSNZ Geoheritage Subcommittee Bruce Hayward publications A book on this site is: Lee, D., Kaulfuss, U. and Conran, J., 2022. Fossil Treasures of Foulden Maar: A Window Into Miocene Zealandia. Otago University Press. Yours, Paul H.-
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The Paleontological/Present Day Chondricthyan diversity of the Mississippi River
Joseph Fossil posted a topic in Questions & Answers
The Mississippi River has (in one form or another since the shrinking of the Western Interior Seaway) been flowing for 70 Million Years. https://www.smithsonianmag.com/science-nature/geological-history-mississippi-river-180975509/ This may be more of a current biological rather than paleontological question, but I'm curious about the origin of the current chondricthyan diversity in the Mississippi River? Now a fair amount of you might be confused when I say "Chondricthyan diversity in the Mississippi River", but this is truly a cool case of truth stranger than fiction. The most famous species in this case is the Bull Shark (Carcharhinus leucas), a requiem shark able to tolerate both fresh and saltwater that had been confirmed to be recorded as far up the Mississippi River as Alton Illinois in 1935. Image credit: https://www.thetelegraph.com/insider/article/Researchers-affirm-two-bull-shark-sightings-16308838.php Shell, R., & Gardner, N. (2021, July 1). Movement of the Bull Shark (carcharhinus leucas) in the upper Mississippi River Basin, North America. Marine and Fishery Sciences (MAFIS). Retrieved February 12, 2023, from https://ojs.inidep.edu.ar/index.php/mafis/article/view/181 Shell, Ryan & Gardner, Nicholas & Hrabik, Robert. (2022). Updates on putative bull shark (Carcharhinus leucas) occurrences in the upper Mississippi River Basin of North America. 36. 10.47193/mafis.3612023010101. https://www.researchgate.net/publication/362847015_Updates_on_putative_bull_shark_Carcharhinus_leucas_occurrences_in_the_upper_Mississippi_River_Basin_of_North_America But these are not the only cases of Chondricthyans found in the Mississippi River as shown by the reports and articles here: http://chnep.wateratlas.usf.edu/upload/documents/Essential_habitat_of.pdf (Specifically pg. 10) Rafinesque, C.S. (1820) Ichthyologia ohiensis, or Natural history of the fishes inhabiting the river Ohio and its tributary streams, preceded by a physical description of the Ohio and its branches. W.G. Hunt, Lexington, Kentucky, 90 pp. https://doi.org/10.5962/bhl.title.6892 Jordan, D.S. and Evermann, B.W. (1896). The fishes of North and Middle America. Bulletin of the US National Museum 47:1-1240. https://www.actionnews5.com/story/12943330/memphis-woman-photographs-stingray-in-mississippi-river/ Today, the Mississippi River is one of the most industrialized rivers in the world, with many locks and dams in places that previously allowed Chondricthyans to enter as upstream as Alton Illinois. This is a phenomena that unfortunately is still occurring both in the US and across the world today from places as far away and China and Brazil, Pakistan to Russia, and Cambodia and Australia, disrupting natural river flows that make regions more prone to sever flooding effects and causing a terrifying decline in large bodied freshwater fish that migrant frequently across a whole rivers lengths (and also contributing to the Human induced climate crisis as all the dead animals that pile up at the bottom of these dams produce high amounts of methane). This phenomenon is also something I must add we as a species needs to address urgently and decisively by switching more to more renewable power sources like solar, install fish ladders and workable passages for fish to go around the dams, or legally breach the dams safely whenever possible. But not to get off track here, I'm still curious about the paleontological date of chondricthyans from the Mississippi River. How many fossils of brackish water sharks and rays have been found in the areas of the Mississippi River, was there a historically larger or smaller amount of chondricthyans in the Mississippi during the Late Pleistocene-Early Holocene, and why isn't (at least that I know of) the chondricthyans diversity in the Mississippi River even historically been as high as places as the Amazon river in Brazil? What do you guys think? -
Found this a while back and had it in my unidentified pile. I assumed it was a small mammal rib and probably un-identifiable, but I took a second look recently, and there's something about the shape that doesn't quite look mammal to me. It also seems older than many of my finds because the entire in-fill at the broken end appears fully mineralized. I figured it was worth asking about. @Harry Pristis @Shellseeker @JohnJ @Meganeura @GPayton @garyc
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Not sure if I've found a fossil. Can anybody help me ID this, please?
Flashgordon posted a topic in Fossil ID
Hi everyone, my sister and I went out on walk at a local nature reserve this morning in the UK. With the weather being so hot recently, water levels have dropped in the ponds and the lake that are situated in the reserve. I found this shell sitting at the edge of a very hidden pond. It was NOT found in rock, it's very light weight, very fragile. Is it still a kind of fossil? Thanks guys- 7 replies
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Don't ignore the 'gators, but here's something else to be cautious about: "BEACH IN FLORIDA CLOSED AFTER BRAIN-EATING AMOEBA CONFIRMED IN TEEN" This is Port Charlotte Beach, fresh water at the mouth of the Peace River. The amoeba thrives in warm temperatures (up to 115 degrees Fahrenheit) and enters the body through the nose when a person’s face is submerged in the water. The amoeba, Naegleria fowleri, normally eats other organisms like bacteria, but it can attack brain tissue if it’s not treated in time.
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Upper Carboniferous (Duckmantian) Fish/shark tooth from coal measures. N. Wales.
Skatetom posted a topic in Fossil ID
Hi people! I'm a PhD student studying a Duckmantian fossil forest in North Wales. I have found these phosphatic fish/shark? teeth and scales I need an ID on. I suspect they are Adamantina Foliacea (Cuny and Stemmerik 2018) but that is a marine shark and this sequence is almost certainly completely freshwater and thought to be an upland swamp. I'm currently doing isotope work on the nodules and plant fossils and that appears to be confirming this is a completely freshwater system. Anyone have any ideas? You'll have to click on the images again once you've opened them to zoom in! Sorry for the poor quality! Thanks, Tom -
Recent purchase. Seller thought freshwater, acquired from an estate in Brazil. Nothing else known, all help appreciated!
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Triassic Bivalve Imprint from the Triassic Basin NC (~230 Ma)
AlexSciChannel posted a topic in Member Collections
Here is a picture of a Bivalve imprint I found whilst in a Creek in Western Wake County. I was in the Triassic Basin and they have fossils dating back around 230 Ma ± 2 ma. It was part of the Carnian Stage of the Triassic part of the bigger Newark Supergroup. I presume it is a freshwater genus but I don't hear much about freshwater Bivalves when it comes to Triassic fossils.- 8 replies
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Billion-year-old, freshwater, multicellular microfossils reported from the Torridonian sequence of the Northwest Scotland
Oxytropidoceras posted a topic in Fossil News
One Billion-Year-Old Fossil Could Be The Oldest Multicellular Animal. David Bressan, Forbes, April 30, 2021 https://www.forbes.com/sites/davidbressan/2021/04/30/one-billion-year-old-fossil-could-be-the-oldest-multicellular-animal/ The open access paper is: Strother, P.K., Brasier, M.D., Wacey, D., Timpe, L., Saunders, M. and Wellman, C.H., 2021. A possible billion-year-old holozoan with differentiated multicellularity. Current Biology. https://www.sciencedirect.com/science/article/pii/S0960982221004243 https://www.cell.com/current-biology/pdf/S0960-9822(21)00424-3.pdf https://www.researchgate.net/publication/350888013_A_possible_billion-year-old_holozoan_with_differentiated_multicellularity https://www.researchgate.net/profile/Paul-Strother Yours, Paul H.- 1 reply
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- bicellum
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Hi everyone, I just got to spend a couple days looking for fossils at Lake Michigan and came across a few that I couldn't identify. In addition to loads of Petroskey stones and Charlevoix stones, I came across the attached rock. Any thoughts on what may have been captured here? The stone is about 4 inches across at the longest (top to bottom in the figure). Location: Charlevoix, Michigan.
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Any ideas on what bone this might be? I have found several whale vertebra in the same location.
bitterlily posted a topic in Fossil ID
I found this bone today in a freshwater creek in Virginia, along with some old scallop shells. I’ll post a four pics of this bone first and then the others that I found last week that were pretty certainly identified as a small whale vertebrae and a flipper phalanx. Curious what this new one might be. Thank you! -
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any way to know if these two bones might come from a similar animal?
bitterlily posted a topic in Fossil ID
Would it be possible that these two bones would come from a similar animal? I have been told with pretty good authority the larger is a whale vertebra and am curious about the smaller, found in the same creek, 100 feet away. Also Chesapecten shells found in the same creek. -
Is there a way to identify this bone found in freshwater creek, Virginia along with some shells.
bitterlily posted a topic in Fossil ID
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Way to identify the name of this type of shell found in Virginia, Freshwater, with fossils
bitterlily posted a topic in Fossil ID
These shells all look similar in nature except the last one, pictured by itself. Any way to identify, specifically? Thank You! Freshwater Creek, very slick light brown clay bottom which is blue grey once penetrated and dug. Also sand.- 2 replies
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Theese are from Evia island Greece an Upper Miocene site with fossils. Any idea what can be the oblong ones ? The cones are freshwater gastropods that can be seen. there is also round and some arced ones. Some have hole in the centre some not . The size also varies a lot from 1 cm to 10 cm
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Photo: top left Found in a small (10ft wide) woodland stream near the LA/MS border, (East Feliciana Parish, LA/Wilkinson County, MS) within the Citronelle Formation; formed during the Pliostene. While the Citronelle is oft noted to contain fewer saltwater fossils than expected for an ancient coastal plain, this stream has provided probably 95% of the marine fossils in my collection. As a longtime rockhounder but fresh off the boat newbie to fossil identification, I've struggled to find a match for this fossil. (The photo is one I had on hand, am preparing to paint and the fossil is buried in chaos right now.) Betting this ID likely is child's play for most of you, any light you can shine on this fossil would be so very much appreciated. -caroline
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- alluvial deposits
- ancient coastal plain
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Show us your home aquarium and its inhabitants! My inverts' tank: -2 Trigonostigma heteromorpha -1 Neocaridina heteropoda (RCS) -1 Brotia herculea -4 Neritina sp. -1 Faunus ater -2 Anentome helena -15 Tylomelania sp. poso (four adults and 11 babys)
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