#dinosaur
#prehistoric
#actionrpg
#cenozoic
#digitalart
#game
#hadean
#mammal
#mesozoic
#paleozoic
#precambrian
#scifi
#phanerozoic
#proterozoic
#archean
#sinapside
#dicensonia
Okay, this is the first teaser of the fauna from my project. I think this list will interest you.
Ancient diabase dikes exposed in the walls of Salt River Canyon adjacent to AZ 77. These sills were intruded into older sedimentary/metamorphic rocks of the Apache Group. #IgneousIntrusion #Proterozoic #SaltRiver #Arizona
a complicated figure from the linked paper showing a large circular evolutionary tree and two graphs
New #ISEPpapers #preprint! Environmental #phylogenetics supports a steady diversification of crown #eukaryotes starting from the mid Proterozoic www.biorxiv.org/content/10.6...
#Protists #Microbes #Evolution #Phylogeny #Proterozoic #Eukaryogenesis
Dickinsonia costata my beloved
#ediacaran #ediacaranbiota #proterozoic
On the left, the photo and sketch of the fossil filament from the original post in the thread. Mid left, is a detail photo and sketch of one of the vesicles that form the filament, and a sketch of the vesicle. The vesicle is a basket of smaller filaments that are woven round each other. These filaments are also made of even smaller vesicles. Mid right, a transmission electron microscope image of a section through the wall of one of the smaller vesicles showing that it too, is made of even smaller nano scale filaments. BUT WAIT, THERES MOaR! Right side, a detail of the TEM image and sketch showing that the nano filaments are made of smaller nano sized vesicles. Would you be surprised to learn that this pattern repeats down to the 10 nanometer range? And repeats upwards to centimetre scale structures? Probably not as surprised as I was to actually find these things. Peace Oot.
#FossilFriday inception style. Details are in the alt text, but this is pretty amazing stuff. I've been trying to figure these mid- #Proterozoic #fossils out for years and I'm just starting to scratch the surface. #Geology #Paleontology
Paleontology•Lobodiscus tribrachialis•A putative triradial macrofossil from the Ediacaran Jiangchuan Biota
DOI: doi.org/10.1016/j.isci.2024.108823
#PaleoEcology #Paleontology #Palaeontology #Proterozoic #Taxonomy
Very nice work. Would these traces fossilise? Porter et al have reported convincing feeding wounds in #Proterozoic eukaryotic acritarchs. I've also seen them in my fossils too. But could these healing traces also be preserved? I don't see why not. So now I'll be looking for them. #paleontology
Interesting work, and nicely timed. If crown fungi do go back into the deep #Proterozoic, that might help explain some of the weird mid-Proterozoic fossils I've been finding. How far back do stem fungi go?
THE FIRST LIFE ON EARTH: Precambrian Era: • Hadean Eon: The Birth of Earth, and Volcanos and Lava. • Archean Eon: Land and Water, and Early Life the very first Cells. • Proterozoic Eon: Microscopic Life, and the very first Invertebrates. Paleozoic Era: • Cambrian Period: Age of Invertebrates, Trilobites, Arthropods, and very first fishes. • Ordovician Period: Age of Corals, Nautilus, Cephalopods, and Early Fishes. • Silurian Period: Primitive Sea Scorpions, Primitive Jawed fishes, and the very first plants. • Devonian Period: Age of Fishes, very first Trees, and very first Amphibians. • Carboniferous Period: Age of Amphibians, giant Insects, and very first Reptiles. • Permian Period: Early Primitive Reptiles, Mammal-like Reptiles, and mass extinction of Trilobites. Mesozoic Era: • Triassic Period: Age of Reptiles, very first Mammals, and very first Dinosaurs. • Jurassic Period: Age of the Dinosaurs, Sea Marine Reptiles Early Mammals, and very first Birds. • Cretaceous Period: Very first Flowers, Early Birds, Last Dinosaurs, mass extinction of the Dinosaurs, and small mammals survived. Cenozoic Era: • Paleogene Period: After Dinosaurs, Age of Mammals and Large Primitive Birds. • Neogene Period: Large Primitive Mammals, and Ape-like humans the Ape-men. • Quaternary Period: Very first Humans the Cavemen, and the Ice Age of Primitive Mammals. • Present Day: Age of Humans and Modern Animals rules the Earth.
#GeologicTimeScale:
#PRECAMBRIAN ERA:
#Hadean.
#Archean.
#Proterozoic.
#PALEOZOIC ERA:
#Cambrian.
#Ordovician.
#Silurian.
#Devonian.
#Carboniferous.
#Permian.
#MESOZOIC ERA:
#Triassic.
#Jurassic.
#Cretaceous.
#CENOZOIC ERA:
#Paleogene.
#Neogene.
#Quaternary.
#PresentDay.
#prehistoric #geologic
@KateShaw has made a new episode, featuring goblet-shaped Diskagma of the Paleoproterozoic, and Horodyskia of the Mesoproterozoic and Neoproterozoic.
strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-d...
#fossils
#preCambrian
#proterozoic
#Paleoproterozoic […]
My #proterozoic deep water seds are Choc full of microbial structures showing that the sea bed was effectively sealed during deposition. This must have had a significant impact on nutrient cycling through the proterozoic.
Something I see in my deep water #Proterozoic seds is thick metre scale intervals composed almost entirely of (maybe) colonial protists that are so abundant they are effectively sealing the seafloor. This must have had a significant impact on nutrient cycling through the Proterozoic.
Almost stromatolitic, or like stromatoporoids. They also look like the cross sections of some of my weird #Proterozoic fossils.
macro photos of a cut rock surface of a mudstone with a strange segmented structure growing vertically through the rock. On the right of the image are detail areas of the structure showing it is made of inter stacked ovoid plated of a brown organic material. A white scale bar shows the sample is 1cm wide and 4 cm long.
Macro photo of a black mudstone surface which is the top of the previous image. There are ovoid and pustular structured overlapping on the surface. There are several dendritic looking structures on the surface similar to the segmented structure in the previous image. A red scale bar shows the sample is about 2cm across.
#FossilFriday Another mid #Proterozoic mystery edition. Details in alt text. 1-cross section of fossil structure with colour coded detail boxes. Up to the top 2- top of the structure bedding plane. Photographed with a macro lens under low angle polarised light. #Geology #Paleontology
Microscope photo of a brown and beige fossil. The surface of the fossil is made of sinuous curving beige ridges that intertwine in a complicated pattern like a maze. A red 10 micron scale bar shows the image is about 50 microns across. Straight line across the upper part of the image is an artefact from stitching several photos together
Extreme close up of the wall of a #Proterozoic #Acritarch in optical. Look at all the sculpture and ornament! The wall is made of stacked rows of tiny sub-micron plates that form these complex patterns. The dark outer layer is made of a different type of plate. scale = 10 um #Geology #Paleontology
Left side, a microscope photo of a cross section of a fossilised microbial mat composed of two light brown layers full of flat and circular grains or lighter or darker material, and two darker layers full of fuzzy filamentous fluffy looking organic matter. The dark fluffy layers are the microbial layers, and the lighter layers are full of mineral grains. Right image is a grey scale interpretive sketch of the left image, the fussy microbial material is represented by dark grey areas. The mineral layers are left white, there are masses of tiny circles that represent tiny fossils just visible in the left picture. Larger ovoid fossil are coloured mid grey with a dark spot at one end. These fossils appear to have a regularly segmented or platy surfaces and an opening at the end with the dark spot, it is unclear at present if these fossils represent organic walled organisms that were later mineralised, or organisms capable of creating a silica shell.
#ThinSectionThursday a #Proterozoic microbial mat with my quick and dirty interpretation. This was one of the first thin section images I captured during my PhD so it's not the best quality, especially compared to what I can do ten years later. Deets in alt text #Geology #Paleontology #SciArt ⚒️🧪
#FossilFriday Another #Proterozoic mystery #fossil. This is from the sample in the quote post. Raman etc support the syngenicity. If you look closely you can see it has the "cuneiform" and "machine" textures from previous posts. Any ideas let me know #geology #paleontology 🧪⚒️
Nice new paper by Huang et al talking about the late #Proterozoic #fossil Arctacellularia and what it can tell us about the early evolution of multicellular eukaryotic algae #geology #Paleontology ⚒️🧪www.sciencedirect.com/science/article/pii/S030...
Microscope photo of a pale yellow fossil that looks like a round wrinkled bag with wrinkled edge like a pie crust. Stick shaped dark brown microfossils are attached to the surface of the yellow fossil. A blue scale bar indicates the yellow fossil is 0.175 millimetres long.
This yellow #fossil ? is from a mid- #Proterozoic sample. I thought it was modern contamination, but Raman shows it's kerogen and silica with the same thermal maturity as the #acritarch in the same sample. Has structural features similar to other acritarchs. Still a mystery. #geology #Paleontology
Left side is a photo of a lump of light-brown mudstone composed of ovoid frond-like fossils. Right image is a grey scale interpretive sketch of the left hand sample. A red scale shows the sample is around 2 x 3 cm in size
Detail of the previous sample showing a mesh-like texture on the right side of one of the frond fossils.
Another set of frond shaped #fossils from my mid #Proterozoic material. My bad mouse traced interpretation on the right. It's hard to parse these things as they always occur in dense overlapping colonies. Red * is location of detail photo #geloogy #palaeontology
found the video of that time a modern micro #fungus ate one of my #proterozoic fossils, RIP Leiosphaeridia sp www.tiktok.com/@geologyjohn...
A tiktok I made 18 months ago about #Proterozoic microbial mats has randomly popped off and now has 345k views. vm.tiktok.com/ZNdht39nf/
microscope photo of a tiny fossil that looks like a wrinkly old raisin or a really shrivelled old potato. It is made of ovoid plates that form chains which wrap around each other, there are regular circular to oval holds in the chains. The chains are wrapped in a sheet made of lots of tiny rings. The sheet has mostly broken away though. a red scale bar in the bottom right shows the fossil is about 0.06 mm long.
#FossilFriday a mid #Proterozoic #acritarch with the complex ultrastructure, sculpture, and ornamentation indicative of #protist #fossils This is a stack of ~60 images taken at 100x mag #Geology #Paleontology
Microscope photo of a brown micro fossil that is circular with a rim like a pie crust. There is a dark blob in the lower right of the fossil. The upper left of the fossil shows the rim twisting in a spiral where part of the fossil is expanding into a new circular vesicle with a smooth brown outer layer.
Best buds. A mid #Proterozoic #acritarch undergoing budding(?) This is probs a wee eukaryote judging by the ornament and multiple layers. This type undergo torsion as they bud. Fossil is ~ 50 microns wide. #geology #paleontology #fossils
Photo of a black mud stone surface with a fossil showing as raised surface with a shape like a long tear drop. The surface is composed of alternately stacked ovoid scales. At the tip the fossil curves and expands into a ball shaped structure that had partly broken.
Nice little frond shaped fossil on one of my mid #proterozoic samples. These are common in the deep water facies, but it's rare to have one this easy to see. It's ~ 2.5 cm long. #geology #paleontology #fossils
Photo of a white binocular microscope on a brown desk. There is a piece of a wrinkly grey mudstone on the viewing plate of the microscope.
Close up of the wrinkly grey rock on the viewing plate of the microscope in the previous image. The surface is highly pustular and wrinkled.
Microscope image of the highly pustlar rock surface. The texture was formed by ancient microbes.
Back in my happy place. I can't describe the peace I get from being in the microscope looking at rocks. It's the only time my brain is quiet. Please enjoy this #proterozoic mudstone with microbial textures #geology #palaeontology #audhd
Photograph of dark grey disc of mud stone with elipsoid raised areas that had a quilt like texture. A scale shows the disc is around 5 cm across. A red square with a dashed boarder indicates the position of a detail image to the left. The detail image is annotated with red letters as follows; Pl = ovoid organo-silica plates, Ch = chains of interlinked ovoid acritarchs coated with silica plates, there are two sub-paralell chains in the image, Q = quilted surface texture, Ov = larger ovoid structure made of silica plates and organic matter, Di = discoidal structure made of overlapping organo-silica plates, the two chains extend from the centre of this structure.
#FossilFriday Enigmatic microbial structures composed of silica plates, filamentous organic matter, and a single type of acritarch. This example is a mid- #Proterozoic mudstone bedding plane. Details in the alt text. #Geology #Paleontology
Photograph of a black carbon fossil with a texture like a spongy mesh of regular circular spaces with carbon dots in the middle, arranged in rows with black filamentous material in between. The fossil is preserved on a flat piece of green-grey mudstone, parts of which are coming away in flakes.
#FossilFriday Part of an undescribed mid #Proterozoic critter preserved as an carbon compression on a deep water mudstone. You can see nice features like the regular spaces with dots in the middle. Image 1cm wide #Geology #Paleontology
Composite image of a microscopic fossil. Far left shows the fossil which looks like a small brown raisin. Next image shows a close up of the fossil which has tube like ridges that form double helix structures with regular lensoid openings. The next two images show Transmission Electron Microscope images of the internal wall structure of the same type of microfossil showing the wall is made of nanoscopic versions of the of the helically coiled tubes. The raisin-like fossil is around 70 microns long, the tubes in the TEM images are around 50-25 nanometers wide.
#FossilFriday This exceptionally preserved #Proterozoic eukaryote #Acritarch. First two images show an example extracted from shale by acid maceration in optical microcroscopy. The other images show the wall ultrastructure of the same type of fossil in TEM. #Geology #Paleontology
