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Amazing stuff!  Wouldn’t want to come across one of those pterosaurs!

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I have my doubts about the "archegosaur"...

 

 

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Betting my bottom dollar director Steve S. knew about this one

 

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I went to the Utah Museum of Natural History the other day. I have picture I will post in the Trip to the Museum threads but thought I would add this one to this thread.

This was in an area that highlighted the mechanics of animals. I representation to the bite force of a Tyrannosaurus.

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4 hours ago, Troodon said:

 

Mioplosus labracoides, believed to have been a voracious freshwater predator.  It is related to the modern-day Zander (pike-perch) and comes from the famous Green River Shales of Wyoming. Eocene, 57 million years old.

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More familiar to North American anglers (especially in the Great Lakes region) Mioplosus' related genus of Sander includes the Walleye (Sander vitreus). Having caught more than a few the resemblance between Mioplosus and the walleye is strong, especially with the spiny first dorsal fin. Included is a Mioplosus of my own.

 

20180302_102521.jpg

 

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4 hours ago, Troodon said:

 

Paleoniscoids were a group of extinct fishes with heterocercal tails and diamond-shaped ganoid scales. Pteronisculus cicatrosus (~7.1cm) is a marine fish from the Ambilobe region in northern Madagascar, Lower Triassic 240 million years old

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Oh hey, I have a Madagascan Pteronisculus as well! I love Middle Sakamena Formation nodule fossils, a biota still in recovery from the Permo-Triassic extinction. I'd put a date closer to about 250-247 million on them from what I have read. I'm not entirely sure the quoted fish is Pteronisculus, Triassic Early Fish Fauna of Madagascar has many similar-appearing species and I'm seeing more of a Parasemionotus with that one.

 

Here's mine, with the smaller ganoid scales I'd espect from Pteronisculus.

20180302_103049.jpg

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Thought I would add to the dilophosaurus wetherilli section as it's one of my favourite jurassic dinosaurus.

 

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Sorry I am a bit late to the party this week but I like to add to the Sinclair dinos that we’re  at the 1964 world’s Fair . I have a old oil can that illustrates the dinosaurs that maybe swimming around in our gas tanks but never made the contentions to the world’s fair.  Thanks everyone and I love that ammonite with the bit marks  .

 

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On 3/2/2018 at 11:47 AM, Troodon said:

Will start off this week with a  "did you know subject"

 

Did you know 

That we are closer to the time of the T-rex than T-rex was to the time of the Stegosaurus, Allosaurus and Diplodocus 

 

 

 

A specimen of Beothikus mistakensis, an Ediacaran rangeomorph organism, from Spaniard's Bay, Newfoundland. This is what life looked like, on the deep sea floor, 570 million years ago

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My own specimen of a rangeomorph holdfast Medusina mawsoni from the Rawnsley Quartzite, Ediacara Formation, Flinders Range, South Australia.

It was originally though to be a jellyfish, hence the name. 

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Life's Good!

Tortoise Friend.

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19 hours ago, Bobby Rico said:

Sorry I am a bit late to the party this week but I like to add to the Sinclair dinos that we’re  at the 1964 world’s Fair . I have a old oil can that illustrates the dinosaurs that maybe swimming around in our gas tanks but never made the contentions to the world’s fair.  Thanks everyone and I love that ammonite with the bit marks  .

 

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Yes, and because of their advertising campaign for many years I really thought oil came from dinosaurs.  I always wondered how such rare fossil specimens could produce so much oil.

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Aetosaurus from the Late Triassic of Germany

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Ctenothrissa vexillifer is a deep-bodied reef fish that disappeared after the Upper Cretaceous (99.7 to 94.3 mya), leaving no descendants. Sahel Alma, Lebanon

 

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The Nottingham Ichthyosaur had been hiding in a geology store for decades, and is now on display in the Life Sciences Building.

 

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Here are some amazing Tyrannosaurs currently on display in the Tyrrell

 

T. rex (Black Beauty), Albertosaurus sarcophagus, & Gorgosaurus libratus

 

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Very close cousin to dinosaurs the triassic archosaur, Asilisaurus kongwe a composite cast at the Burke Museum

 

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A new Middle Cambrian bristleworm found in the remarkable preservation near Canada's Burgess Shale.

 

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Holotype of Leidysuchus riggsi, an alligatoroid from the Late Cretaceous of the Field museum Chicago

 

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The prosauropods, Massospondylus skull from Lesotho and a beautiful Thecodontosaurus foot from Wales NHM London

 

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Asterophylites longifolius - leaf whorls of a tree-like Coal Age "horsetail" (Calamitaceae) Carboniferous, Kansas, USA courtesy of the ROM toronto

 

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The Nanotyrannus Jane's right maxilla, in lateral view at the Burpee Museum

 

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Palaeolagus, a Rabbit  lived in the Oligocene period which was about 33-23 million years ago. Courtesy of Pete Larsen,  BHI..  .

 

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One of the most complete Utahraptor skeletons ever found, at the BYU Museum of Paleontology.


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The neotype of Massospondylus carinatus, courtesy of ESI FossilLab. This was one of the first dinosaurs to be described (by Richard Owen in 1854) and comes from the early Jurassic (`~200–180 mil yrs ago) of South Africa

 

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Massosspondylus nest! 

 

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Courtsey of Charleston Museum

Cabinets freshly filled to the brim with Oligocene whales from the Chandler Bridge and Ashley formation

 

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Here is the lower first molar from the extinct canid Archaeocyon leptous. Tooth is about 1 cm long. Collected from the Oligocene (~32 milkion year old) Brule Formation of North Dakota.

 

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There have been some odd elephants (Eubelodon, Mammuthus, Amebelodon, and Gomphotherium)

 

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Original fossil skull & skeleton of new dinosaur Rativates evadens - a new holotype for the ROM Toronto 

 

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Some Hypacrosaurus (Hadrosaur) eggs from Devils Coulee, Montana, Two Medicine Formation courtesy of the Tyrrell Museum

 

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A  Champsosaurus cretacepis reptile

 

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Ammonoids had sutures (divisions separating shell chambers) that can be classified into three main types: goniatite, ceratite, and ammonite. Curves pointing towards the aperture are saddles, those pointing towards the origin point of the shell are lobes.

 

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From the collections of the Paleontological Research Institution a look at 3 suture patterns

 

While ammonoids with ammonite sutures are best known from the Jurassic and Cretaceous, this specimen of Arcestes pannonicus provides an example of a Triassic species with an ammonite suture pattern. 

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A specimen of Gymnotoceras beachi, which has a ceratite suture pattern. 

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Beautiful ammonite suture patterns on a specimen of Spenodiscus lenticularis

 

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 The 'golf ball head' pachycephalosaur ,  Foraminacephale brevis courtesy of the ROM

 

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This Camarasaurus, a juvenile from Dinosaur National Monument is the most complete sauropod ever found. This is the original at the Carnegie Museum

 

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Tools have not changed much from early days of collecting

 

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A Ceratopsian in Horseshoe Canyon Formation of Alberta

 

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Hylonomus lyelli - the earliest known reptile in the fossil record found, Nova Scotia

 

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With the aid of a horse, a ROM team removes dinosaur specimens from excavation site in Red Deer River Area, AB, 1954

 

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Reconstructed Marshosaurus skull from the Morisson formation

 

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Gnathabelodon buckneri at UT Austin a spoon billed mastodon late miocene

 

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These Troodontid nests were preserved at different stages. The one on the left was hatched; the right were unhatched, courtesy of the Tyrrell

 

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I added this picture of a Paleontologist exhuming a cretaceous fish fossil.  This is a display in the Sernberg Museum in Hays Kansas. Found it to be extremely life like.

20180306_111437.jpg.84ea5e03c2c835b777179e2f759cef02.jpg20180306_111423.jpg.154bc59d423b7a692ef7ca1839320507.jpg

 

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20180306_112021.jpg.e4428bc9c270e67d625afe588c45a3b9.jpg

In the same Museum a Pteranodon sterbergi in the air. They had between 13 and 23 foot wing span, Very impressive display against the dome ceiling.

 

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Some good pics here .The big fish paints a very eloquent picture and is hugely(literally:P) impressive.

 

 

 

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5 hours ago, Troodon said:

 

Ctenothrissa vexillifer is a deep-bodied reef fish that disappeared after the Upper Cretaceous (99.7 to 94.3 mya), leaving no descendants. Sahel Alma, Lebanon

 

DXQ8lJ3XcAEaWi-.thumb.jpeg.e38b291acbe0521ac18217ea92b3a03d.jpeg

 

 

The Nottingham Ichthyosaur had been hiding in a geology store for decades, and is now on display in the Life Sciences Building.

 

DXS9iNPXkAAFdeP.thumb.jpeg.a90d8098e08a4fd16de5dbdd4efee7bb.jpeg

 

 

 

Very close cousin to dinosaurs the triassic archosaur, Asilisaurus kongwe a composite cast at the Burke Museum

 

DXUaGoSVAAAX3_k.thumb.jpeg.862a99d014df6eef96b07b193e6219df.jpeg

 

Great selection of photos as usual. :)

But i would like to point out that those shown above all seem to have black eyes! 

Who is going about punching prehistoric animals? 

 

Life's Good!

Tortoise Friend.

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@Troodon You never cease to amaze me on Fridays and you have done it again.

Fantastic  pictures. I don't know where you come up with them but thanks for posting.

I love the picture showing the differences in the Ammonoids.

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