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Showing results for tags 'avisaurus'.
Found 14 results
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From the album: Hell Creek / Lance Formations
Even in the final years of the non-avian dinosaurs, the paravians remained diverse, with many species represented in the famed Hell Creek formation. -
Hi everyone! I wanted to post one of my new favorite finds from this past week of collecting in the Hell Creek formation of Montana. I found this little partial claw at a microsite which proved to be quite productive, making for a great day. While the articulating surface is missing, I still feel that it could be identifiable and my first guess is bird. Avisaurus in particular as I remember seeing similar claws being labeled as such on other platforms. It’s about two centimeters long and the bottom is flat, giving it a somewhat triangular cross section. photos from the field.
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- montana
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While my prime focus is essentially learning how to accurately describe Nature in the precise language of mathematics, I've always been intrigued by natural history - it's actually what started me on the path to physics. The sort of interrogation that paleontology practices provoked me to think and question even further, down to the fundamental science which makes it all work. Collecting fossils has brought a large amount of enjoyment to my life, and is often a welcome distraction from what can sometimes be straining work. The knowledge that I accumulate along the way is also part
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From the album: Hell Creek / Lance Formations
Avisaurus cf. archibaldi Hell Creek Fm., Garfield Co., MT, USA More information Avisaurus is an extinct, toothed Enantiornithine bird that lived at the very end of the Cretaceous. It likely held a similar niche that hawks/eagles do today, preying on small vertebrates like lizards and mammals.- 1 comment
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- hell creek
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From the album: Lance fm. Microsite Finds
I found this tooth while looking through matrix from a productive conglomerate site while at home. At first I had no clue what it could be, but the consensus on its ID thread was that likely belonged to Avisaurus. While its hard to conceptualize birds with teeth from our modern perspective, that was the norm for many genera in the Cretaceous. Glad to have found this one and recognize it as a tooth.-
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- lance fm
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From the album: Dinosaurs
A Cretaceous bird tooth (avian dinosaur). ~ 4 mm in height.-
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- enantiornithes
- mesozoic bird
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Identification: This tooth is triangular and thin, with significant basal constriction, a hallmark of bird teeth. Notes: This tooth has a feeding wear facet on the labial side, suggesting that it's from the left "dentary." Citation: BRETT-SURMAN, MICHAEL K. & PAUL, GREGORY S., 1985, A new family of bird-like dinosaurs linking Laurasia and Gondwanaland, Journal of Vertebrate Paleontology, Volume 5, Number 2, June, Pages 133-138, https://www.jstor.org/stable/i405987
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- avisaurus archibaldi
- avisaurus tooth
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How do we know these teeth came from Cretaceous birds?
ThePhysicist posted a topic in General Fossil Discussion
I've seen several teeth that are purportedly from Cretaceous avian dinosaurs/birds, specifically Avisaurus sp. I've done some light digging, but I don't yet know how these teeth can be assigned to a bird. My thinking was that you need an identifiable jaw with these teeth, but I couldn't find any such literature on Avisaurus at least. My other guess is that they closely match the morphology of other Enantiornithine bird teeth? In any case, I'd be much obliged if someone could pass along some relevant paper(s). These are examples of Avisaurus archibaldi posted by @Auspex: -
Unfortunately, cant get better pics. But hope these are ok. Avisaurus, Hell Creek, 6mm. Seller said there aren't serrations. Thanks
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This is a pretty interesting tooth and I figured I would post it here to get some additional thoughts. This is labeled as an Avisaurus tooth from Garfield County Montana, Hell Creek formation. The first thing that stood out to me was that the shape was a bit different than most teeth labeled Avisaurus that I have seen. Granted I have not seen many but this looked different. It is also close to 1/4" which seems quite large for an Avisaurus. Since there are several Enantionithean birds from Hell Creek, it could be from one for sure but could it be something else? I did some research
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A very successful note taking dinosaur program.
fossilsonwheels posted a topic in General Fossil Discussion
I do not want to brag but I am going to just a little We did our note taking dinosaur adaptation program yesterday and it was really pretty awesome. Every kid in both classes took notes and they were among the most engaged students I have ever worked with. I already knew these kids from an earlier shark presentation so they were really pretty excited. They knew their dinosaurs but we were able to expand their knowledge and get them excited about new dinosaurs. We will be doing more these dual standard programs next year for sure. This was also the first presentation i had done whe- 2 replies
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- fossil education
- dinosaurs in the classroom
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Our little Avisaurus tooth might be headed for a research project
fossilsonwheels posted a topic in Partners in Paleontology - Member Contributions to Science
One of the stated goals of Fossils on Wheels is making contributions to science. it will be in the charter when we have finalized our 501c3 and it will be part of our mission statement. My son and I believe in this idea as much as we do in the education pursuits. I recently contacted a very well known Paleontologist who has made some ground breaking discoveries in the world of avian evolution. I wanted to pick her brain a bit and I told her a little about we are doing. i happened to mention we just got a small "Avisaurus" tooth for our program. She informed us about a research pro-
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- cretaceous bird teeth
- scientific study
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I was recently going through some old finds from last summer when I came across this little bone, it is partially hollow and has very porous bone structure. that's why I assume this bone came from a very small theropod. It shares some resemblance to a bambiraptor coracoid as shown in the last picture and is almost exactly the same size. the bone measures 11mm wide in the first picture
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I really really love primitive birds and would love to see your primitive bird fossils, with scale if possible I only got a couple myself but would love your opinions!
