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End-Permian (252 Mya) deforestation, wildfires and flooding (open access paper)
Oxytropidoceras posted a topic in Fossil News
Below is a very interesting open access paper. Vajda, V., McLoughlin, S., Mays, C., Frank, T.D., Fielding, C.R., Tevyaw, A., Lehsten, V., Bocking, M. and Nicoll, R.S., 2020. End-Permian (252 Mya) deforestation, wildfires and flooding—An ancient biotic crisis with lessons for the present. Earth and Planetary Science Letters, 529, p.115875. https://www.sciencedirect.com/science/article/pii/S0012821X19305679 Yours, Paul H. -
VAIMCLOUH End-Permian (252 Mya) deforestation, wildfires and flooding—An ancient biotic crisis with lessons for the present Vivi Vajda,, StephenMcLoughlin, Chris Mays, Tracy D.Frank, Christopher R.Fielding, AllenTevyaw, Veiko Lehsten, Malcolm Bocking, Robert S.Nicoll Earth and Planetary Science Letters 529(2020)115875 !!!!!!!!!!!!!!! NB: 7,3 Mb editorial note: Having some pre-existing knowledge of organic petrology,palynology,geochemistry would be helpful
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Pilbara stomatolites revisited (Pilbara Craton, Australia)
Oxytropidoceras posted a topic in Fossil News
Confirmed. Fossils That Formed 3.5 billion Years Ago, Really are Fossils. The Oldest Evidence of Life Found So Far Universe Today, September 30, 2019 https://www.universetoday.com/143561/confirmed-fossils-that-formed-3-5-billion-years-ago-really-are-fossils-the-oldest-evidence-of-life-found-so-far/ The Pilbara’s famous stromatolites finally give up their secret. Mark Bruer reports., Cosomos, Sept. 30, 2019 https://cosmosmagazine.com/geoscience/earliest-life-found-in-ancient-aussie-rocks Earliest signs of life: scientists find microbial remains in ancient rocks University of New South Wales, Sydney, Australia https://newsroom.unsw.edu.au/news/science-tech/earliest-signs-life-scientists-find-microbial-remains-ancient-rocks Yours, Paul H.- 1 reply
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We’ll update this thread when we get working on it, but for now this is Skye (@Jesuslover340) and my latest prep project. Busted up Pleistocene pelvis. Not sure who it’s from yet. Pics are: 1. As found 2. Uncovering more 3. Showing size 4. Plastered 5. Breaking it free 6. Back at home. May seem ridiculous but this progression took 2 months to do. We were a bit slow/busy with life.
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Thought I would share some specimens from my recent trip to the Mt Scott Range, near the town of Leigh Creek and about 540 km north of the city of Adelaide. These Arachaeocyatha can be found just beside the main road and are from the Ajax Limestone, of Lower Cambrian age (528 Ma). I am not able to indentify genera or species but many types are represented. Best way to see them is to either find a sample that has been naturally weathered, which shows up the structure in relief, or cut and polish sections. The last photo shows a longitudinal section of one showing both the double wall structure of the caylyx and also the attachemnt holdfast.
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I have a sample of calcite crystal from Corop in Victoria, Australia. It has a collection of "growths" which I struggle to understand. Given these rocks are Cambrian and were formed in very hot conditions (volcanic, underwater ) no fossils could be expected. It's more likely to be a mineral dissolution feature, but not possible to tell. My problem is the way the "worm holes" butt against each other without joining, suggesting some kind of organic replacement. My mystery appears to follow fractures and isn't evenly tubular. It comes from a road metal quarry in the vicinity of a fault region filled with minerals, where the calcite is among material blasted from a vertical wall so the depth and surrounding rock is not clear. Perhaps it has joined the site over the eons since the rock formed. My local museum geology department has no answer yet. Photographs taken with microscope X10. Any ideas?
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Heading to SVP Meeting in Brisbane Australia what are the Rules for Collecting in Australia
paleosanta posted a topic in Fossil Hunting Trips
Im heading to Brisbane Australia for the annual Society of Vertebrate Paleontology meeting in October with several Rowan University Professors/Paleontologists and I am trying to research the rules for collecting fossils in Australia. I know we will each need to obtain a fossicking licence but we would greatly appreciate any knowledge on the rules for fossil collecting while we are in Cairns and Brisbane. Thanks in advance -
From the album Cretaceous Shark Teeth
Undescribed species from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Undescribed species from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Currently undescribed Cardabiodontid species from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Currently undescribed Cardabiodontid species from Toolebuc Formation, Australia. Albian in age. -
Undescribed shark species (Dallasiella sp.?) Australia
Untitled posted a gallery image in Members Gallery
From the album Cretaceous Shark Teeth
Undescribed species of shark from Toolebuc Formation, Australia. The central fold in the root and shape reminds me of Dallasiella. -
Undescribed shark species (Dallasiella sp.?) Australia
Untitled posted a gallery image in Members Gallery
From the album Cretaceous Shark Teeth
Undescribed species of shark from Toolebuc Formation, Australia. The central fold in the root and shape reminds me of Dallasiella. -
From the album Cretaceous Shark Teeth
Archeolamna sp. from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Archeolamna sp. from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Leptostyrax sp. from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Leptostyrax sp. from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Undescribed shark species from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Undescribed shark species from Toolebuc Formation, Australia. Albian in age. -
From the album Cretaceous Shark Teeth
Undescribed shark from Toolebuc Formation, Australia. Albian in age. This tooth possesses folds along the enamel on both sides of the tooth (hard to see in photos), resembling those on Cretodus. -
From the album Cretaceous Shark Teeth
Undescribed shark from Toolebuc Formation, Australia. Albian in age. This tooth possesses folds along the enamel on both sides of the tooth (hard to see in photos), resembling those on Cretodus. -
My first visit to Fossil Beach at Mornington Victoria today. I found this piece of fossilised coral. I know the finds from this area date to the Middle Miocene period (10-15 million years old) but I was curious as to whether this would date from that period too?
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Chasing Opal and Fossils in the Australian Outback An ambitious collaboration between scientists and a local mining community seeks to preserve one-of-a-kind opalized fossils. BY Clare Watson, Undark https://undark.org/article/chasing-opal-fossils-australian-outback/ A recent paper is: Bell, P.R., Fanti, F., Hart, L.J., Milan, L.A., Craven, S.J., Brougham, T. and Smith, E., 2019. Revised geology, age, and vertebrate diversity of the dinosaur-bearing Griman Creek Formation (Cenomanian), Lightning Ridge, New South Wales, Australia. Palaeogeography, palaeoclimatology, palaeoecology, 514, pp.655-671. Yours, Paul H.
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Hi Everyone, I've recently returned from a weekend trip to a fossil site in central Australia. The location contains siltstone laid from the ancient ocean once in the middle of Australia during the middle Cambrian. Both John R. Laurie and Dr P.D. Kruse have completed work on the site and have some publications accessible online. Along with a good collection of trilobites I came across a number of what I believe to be stromatolite fossils. The first image (1.1) was found on the way to the location about 150km before we reached it, the road cut through a much lighter shade of rock outcropping than we had previously seen. The formation appeared identical to the Arthur Creek formation, and judging from the geological surveys I have checked it should be part of the same formation. So keep in mind the first image is not from a known fossil bed, but is only from my best judgement part of the same formation. The remaining fossils in 1.2 are all from the known fossil bed, part of the Arthur Creek formation dating to the Templetonia (middle Cambrian). Top-left looks to me like a very typical stromatolite, similar to what is still seen today in Western Australia. The other fossils seem to me to be either the same stomatolite but seen at a different stage of weathering, or another type of stromatolite. I am interested to hear the opinions of those more knowledgeable! Thanks in advance. Trip Post: The fossil site is found in the location below https://www.google.com/maps/place/21%C2%B042'53.0%22S+135%C2%B039'38.9%22E/@-21.71473,135.66081,1873m/data=!3m1!1e3!4m5!3m4!1s0x0:0x0!8m2!3d-21.71473!4d135.66081 In the publication below, NTGS Elk 3 bore samples refer to the location visited. Stromatolite and bioturbated sea floor 1.1 Stromatolites 1.2
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Stromatolite and bioturbated sea floor - Arthur Creek Formation 1.1
JesseKoz posted a gallery image in Members Gallery
From the album Central Australia - Arthur Creek Formation
Stromatolites from the Arthur Creek formation in central Australia.
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