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Scientists Pin Down When Earth’s Crust Cracked, Then Came to Life New data indicating that Earth’s surface broke up about 3.2 billion years ago helps clarify how plate tectonics drove the evolution of complex life. The paper is: Tusch, J., Münker, C., Hasenstab, E., Jansen, M., Marien, C.S., Kurzweil, F., Van Kranendonk, M.J., Smithies, H., Maier, W. and Garbe-Schönberg, D., 2021. Convective isolation of Hadean mantle reservoirs through Archean time. Proceedings of the National Academy of Sciences, 118(2), no.e2012626118. Yours, Paul H.

Hi everyone! I'm new to fossil hunting and I found a few interesting rocks underneath Sea Cliff Bridge near Wollongong in Australia. There was a lot of coal in the area for context. I will attach some photos of the rocks I found, I'm particularly interested in the small white (quartz??) lines intersecting the black part of the stone. Any help would be hugely appreciated! Thanks

Howdy from Australia, and not just any part. Perth. Kids are finally old enough to know what fossils are! So time to start hunting and stuff. Any tips appreciated

Dear Community, I need big help for small tooth that i found in North-east Queensland, Australia. I suspect it to be a shark tooth, but a missing root makes the search much harder.. I'll be using metric sizes, or specifically mm= millimeter Here the hard facts I can give: -ca 6mm long and 4,5mm wide -triangular shape, no serrations -no cusplets (maybe broken off?) Ps: sorry if I am spamming pictures, wasn't sure what lighting would be best... Thanks in advance for all the knowledge sharers and gatherers out there!

Below are some of the slabs/slices/limb casts of petrified wood from my collection. I'll post more pieces in latter replies. I especially like very colorful pieces and unusual pieces like Teredo bored pieces or pieces with fungus. I have hundreds of close-up pictures. If you would like to see close-up pictures of a particular piece, reply to this post with the number/numbers. If you want to see close-up pictures of some of the petrified wood pieces from this thread, check out my TFF thread at the below link: 1 Petrified Wood botryoidal agate golden calcite insect borings ostracods Eocene 50 MYA Green River Fm Blue Forest along Lake Gosiute Sweetwater County Wyoming 1.2 lbs 8.25 x6x.38 inches 2 Petrified Wood conifer Araucarioxylon arizonicum fungus Polyporites wardii early Permian late Triassic 295 to 201 MYA Chinle Fm northern Arizona 3.60 lbs 10.25x8.75x.5 inches 3 Petrified Wood Triassic 225 MYA Chinle Formation near Holbrook Arizona 745g 160 x200x12mm 4 Petrified Wood Seed Fern Rhexoxylon Triassic 220 MYA Ambilobe Madagascar 136g 3.75x2.50x.375 to .5 inches 5 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 575g 145mmx95mmx18mm 6 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 182g 4.25x3.5x.31 inches 7 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar 201g 4.25x3.5x.375 inches 8 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar155g 4.25x3x.375 inches 9 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Acondromen Madagascar157g 4.25x3.25x.375 inches 10 Teredo Bored Petrified Wood Slab Paleocene Epoch Canon Ball Formation North Dakota 2,150g 10.25x9x.625 inches 11 Petrified tree fern Tietea singularis Permian 275MYA Motuca Formation Parnaíba Basin in Filadélfia Tocantins Brazil 340 g 8 x 4.75 x.25 inches 12 Petrified Wood encased In Algae-Laurel Eocene Bridger Formation Blue Forest WY 1802g 9.5x7.75x.625 to .75 inches 13 Petrified Replacement Wood Eocene 34 to 40 MYA Clarno Formation Hampton Butte central Oregon 484g 7 x 5 x .44 inches 14 Petrified Wood Slab Woodworthia Triassic Chinle Formation Winslow AZ 408 g 5.5x4.25x.43 to.5 inches 15 Agate Petrified Wood Turkey 253g 6.25 X 3.25 X .31 inches 16 Petrified Wood Slab Cedar Miocene 15.5 MYA Wanapum Basalt Formation Saddle Mountain Washington 228g 5.5x4.25x.25 inches 17 Petrified Wood Slab Miocene 15.5 MYA Wanapum Basalt Formation Saddle Mountain Washington 361g 5.75x5x.44 inches 18 Petrified Shrinkwood Miocene Fleming Formation Live Oak County, Texas 176g 4.25x3.5x.375 inches 19 Yew Taxus sp. in Stromatolitic Algae Miocene Tonopah Nevada 3.25 x 2.5x.19 inches 20 Teredo Bored Petrified Driftwood Middle Miocene Saltos Shale Member Monterey Formation Santa Barbara Canyon near Cuyama CA 6 x 4x.625 inches 21 Petrified Wood Araucaria conifer Monkey Puzzle Tree Triassic Age 200 to 250 MYA Madagascar 572g 5.75x4x.7 inches 22 Hematite Replaced Teredo Bored Petrified Wood Eocene Yegua Formation or Cretaceous 40 to 50 MYA Lake Bryan TX 288g 7.25 x3x.44 inches 23 Petrified Wood Log Miocene Jarbridge Ryolite Formation Hubbard Basin Elko County Nevada 1061g 4.25x4x1.75 to 2.75 inches 24 Petrified Wood Triassic 225 MYA Chinle Formation Arizona 1186g 8.25x6.75x.625 inches 25 Petrified Wood Sycamore Platanus sp. Miocene Bopesta Formation Horse Canyon near Tehachapi Kern County California 271g 4x3.5x.75 inches Marco Sr.

Greetings from sunny Western Australia where we are battling exceedingly high fuel prices and COVID. Whilst walking along one of our South West beaches, I picked up this rock (I pick up most rocks), only to find a 'paw' print embedded on one side. What are peoples thoughts? The rock measures approximately 2 inches in diameter, so the imprint is approximately the size of a cat/small dog. I would love to see if anyone else has found anything similar. Stay well. :-)

G'day everyone! I'm Mark. I'm actually here for an ID, but I didn't want to just barge in and be like gimme gimme, yknow, so I thought the very least I could do is to introduce myself first. So truth be told I'm not really a fossil guy, with no real interest or knowledge beyond thinking they're cool. What I am is a hobby gold prospector...and it was while doing that when I came across some fossils I'd like to have ID'd. Despite not being a "fossil guy" I have nonetheless been enjoying reading through the forums over the past couple of days nand seeing everyones collections and finds. It has certainly piqued my interest. Maybe one day I could be a "fossil guy"! Haha. But being a gold prospector I definitely see and appreciate the appeal of a fossil hunt. Perhaps I'll head out on a dedicated hunt some day myself...but I've got a lot to learn before I could even consider that. Anyway I'll be floating around. Not sure how much I'll contribute though as I dont think I'll have much to add of value beyond "ohhh thats cool!" type of thing.

Hi guys I’m from NSW Australia and have been finding teeth for the last couple years and just wondering if someone can help identify a tooth and two vertebrae. Thanks!

Hi everyone, I've had a long term interest in paleontology, but have only recently began to gather my own fossil collection. I've been looking around the forum already and found a lot of inspiration in your collections, and very timely advice on fraudulent fossils, so I already have reason to thank you all.

Hello from australia

Hello, Here are a few microscopic images of Yowah opal. I wonder if this spider-looking thing is a fossil or a mineral, and also what do you think about other things in this opal

Here is my small collection of fossil mud-lobster. I know they are very very common but still find they are fascinating to look at. They are all from Gunn point , Northern Territory (Australia). From the last photo, I can see some soft tissues exposed and preserved. Can I please ask, under what circumstances, the soft tissues can be preserved? Because I am not sure of its age (probably 17000??), I don’t know if they are fossil or just sub fossil? Thanks in advance ️

Amazing new laagerstat announced in NSW. https://scitechdaily.com/life-in-the-dead-heart-of-australia-incredible-new-lagerstatte-fossil-site-discovered/

Hi there I have an opalised lizard ,bird like piece I am attempting to identify the piece. If anyone has any ideas would be greatly appreciated. Thank you.

I found this shell fossil 6 or so years ago on the fossil walk in Ulladulla, NSW, Australia. What I find strange about it is that it's a common species at this site, only it's deposited in a rock from after the species inhabited the area. The fossil is deposited in a stone transported to the area when glaciers moved though and, to the best of my knowledge, the fossils in Ulladulla are all from far before the glaciers arrived. Does anyone have any ideas how this fossil came to be here? Thanks

Great open access paper about the Devonian Gogo Formation Lagerstätte, Canning Basin, West Australia. Trinajstic, K., Briggs, D.E. and Long, J.A., 2021. The Gogo Formation Lagerstätte: a view of Australia's first great barrier reef. Journal of the Geological Society. Yours, Paul H.

I found this insect on a slab of rock from the Late Triassic, Blackstone Fm of Qld, Australia. If anybody can help identify it’s clade of hopefully even it’s genus and species I’d be highly appreciative. Thanks!

Found this in near a cliff side in NSW, Australia in shale rock, have tried to identify it but have had trouble, so was seeing if anyone could help in anyway. Thanks.

Hi everyone, would like to ask about the Sydney Fossil show earlier this year and I think there is one coming up later in October (unless cancelled due to covid). I went a couple years ago but from what I saw then, there was not much dino material but only the usual "museum gift shop" fossils or crystals. May I ask if anyone has gone to them recently and if they think its worth going for someone more into dinosaurs? And if you guys know when the next one is? Thanks!

Tooth was found a long South Australia coast line, back up in the dunes. Have had it for nearly 30 years. Would love to know what its from.