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Showing results for tags 'theropod'.
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Can’t figure this one out. Maybe a limb bone but definitely theropod. Dinosaur park formation
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Hey all, I found something similar to a claw today and I’m wondering if there’s a possibility. Maybe a foot claw if it is but I don’t know what it could be. There’s quite a bit of ironstone on it so it’s hard to say. Dinosaur park formation.
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From the album: Hell Creek / Lance Formations
Pectinodon (meaning "comb-tooth") is a tooth taxon, since no remains attributable to the genus beyond teeth have been found. Pectinodon seems to be a rare member of the Hell Creek fauna, with their teeth being fairly uncommon (though being so small, I'd guess that few people actively search for them). It was a small Troodontid theropod, with teeth that couldn't handle stresses as well as their Dromaeosaurid and Tyrannosaurid cousins (Torices et al. (2018)). This coupled with their small size suggest that Pectinodon was a small/soft prey specialist, preferring the rodent-sized mammals of the time, lizards, insects, etc. Some researchers have proposed omnivory as a possibility for Troodontids (cf. Holtz et al. (1998)). Troodontids famously are regarded as among the most intelligent dinosaurs for their large brain size / body size ratio. This notion serves as fodder for speculation that had the dinosaurs not gone extinct, Troodontids (Pectinodon being (one of?) the last) would have continued to grow in intelligence and develop sentience and civilizations. Troodontid teeth like Pectinodon can be easily identified by their small size, exaggerated, triangular, apically oriented posterior serrations.-
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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.- 1 comment
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- acheroraptor
- acheroraptor temertyorum
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This has the size and J-shape cross section of a dromie premax. It also has the protruding mesial carina that you can see from a distal view. What do you think? Hell creek formation, Powder River co, Montana CH: 14.8mm CBL: 7.0mm CBW: 5.3mm Mesial serration density: 4.66/mm Distal serration density: 3.20/mm Thanks!!
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This has the size and J-shape cross section of a dromie premax. It also has the protruding mesial carina that you can see from a distal view. What do you think? Hell creek formation, Carter co, Montana CH: 15.6mm CBL: 6.7mm CBW: 4.7mm Mesial serration density: 6.5/mm Distal serration density: 3.5/mm
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- hell creek
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Would love to hear what do you think of this one? Hell creek formation, Carter co, Montana CH: 11mm CBL: 5.8mm CBW: 2.6mm Mesial serration density: about 5.3/mm Distal serration density: about 4.3/mm Thanks!
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Tyrannosaurus shoulder blade
heZZ posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi, i found this fossil for sale and i'm curious is it real, how much original bone is present and has the picture been edited?
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Hi, Looks like Rex to me. Hell creek formation, Powder River co, Montana CH: 22mm CBL: 11.1mm CBW: 6.3mm Mesial serration density: 15/5mm Distal serration density: 14/5mm
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Hi, What do you think? Hell creek formation, Harding Co, South Dakota CH: 13.4mm CBL: 7.3mm CBW: 3.0mm Mesial serration density: about 5.5/mm Distal serration density: about 4.4/mm
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Hi, Not sure this is identifiable. Rex? Possible huge raptor indet? Hell creek formation, Garfield co, Montana CH: about 27mm CBL: 11.1mm CBW: 6.2mm Mesial serration density: about 3.4/mm Distal serration density: about 2.6/mm
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Hi, What do you think? Hell creek formation, Powder River co, Montana CH: 11.2mm CBL: 5.9mm CBW: 2.9mm Mesial serration density: about 7/mm Distal serration density: about 4.3/mm Thanks!
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Hi everyone! I recently acquired this from the Hell Creek of Carter County. I assumed it was a juvie Rex and but was asked to check the serration density and it came back weird so I thought I'd ask for some input. I'm hoping I can at least rule out Nano which I will be shocked if this even has the possibility of being Nano. We might be looking at another "Larsonraptor" situation (if you know you know). CH is 26 mm CBL is 11 mm CBW is 8.18 mm mesial serration density is 14 for 4 mm distal serration density is 10.5 for 4 mm DSDI is 4/3 Any insight is appreciated as always!
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Hey all, Curious to get your thoughts on a new addition: Tiourarén formation, Niger CH: 35mm (very rough estimate) CBL: 19.2mm CBW: 9.7mm Mesial serration density: 1.5/mm Distal serration density: 1.6/mm Transverse undulations present Mesial carina extend to approximately 2/3 down
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what kind of tooth is this? If anyone knows, please let me know. Thanks in advance! It's hard to tell, but I'll be posting more detailed images later!
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Are these fossil footprints real? If anyone knows, please let me know. Thanks in advance!
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Hey all, Curious to get your thoughts on a new addition: Tiourarén formation, Niger CH: 44.2mm CBL: 24.2mm CBW: 10.1mm Mesial serration density: 14/5mm Distal serration density: 13/5mm Transverse undulations present Mesial denticles extend to the base, more fitting for the Morrison formation The preservation isn't what I'm used to from the Tiourarén formation, but I've seen some that are similar. Thanks!!
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Small theropod claw?
BirdsAreDinosaurs posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi all. This little claw (1.6 cm) from the Kem Kem beds is claimed to be a theropod claw. Is that correct? Is it possible to id it to family level? Out of curiosity, I was also wondering if it is possible to tell apart avian and non-avian theropod claws. If so, how can you tell? Thanks!
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Hey all, I got this a while back, but it was too covered in matrix to do any solid ID'ing--until today! Appreciate any ID info/opinions you have. From the Cloverly formation, Montana CH: 12.6mm CBL: 6.8mm CBW: 3.3mm Mesial serration density: about 6/mm Distal serration density: about 3.6/mm Transverse undulations I'm not sure about interdenticular sulci, but I think that box is checked too Prayer
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I figured as long as I'm asking about a 2" finger bone, I might as well throw in a 2" caudal vert This is from the Judith River formation, Hill County, Montana. Thank you!!
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Saw this tooth for sale, it’s from Judith river formation and from the upper Cretaceous part of the formation according to the seller. I was wondering if it could be put in a more specific group. Don’t know much about the dinosaur species that live there but maybe a small Dromaeosaurid or tyrannosaurid tooth? I understand if it can’t be put in a more specific group, anyways thanks in advance for any help with id.
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Hi folks, Anyone have any bright ideas on what this is and what species it might be from? 8 inch limb bone(?) fragment. According to the seller it's from the Montana portion of the Hell Creek formation. Both ends appear broken off, but I'm not sure if the bone features on the inside of the curve can help with ID at all?
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From the album: Hell Creek / Lance Formations
As a theropod tooth aficionado, I thought it useful to compare two families present in the Hell Creek Formation. They become increasingly difficult to distinguish as they get smaller, but this graphic presents some features which may be used to differentiate them on two similarly-sized exceptional specimens. Keep in mind there is some variability due to position, ontogeny, etc., so it's beneficial to study more than one tooth for each family.-
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- dromaeosaur
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I think this one is a little trickier than normal. Would love to hear your thoughts! The hell creek formation, Powder River County, Montana CH: 12.5mm (small adjustment for tip wear) CBL: 6.8mm CBW: 3.6mm Mesial serration density: 25/5mm Distal serration density: 20/5mm Complication: The mesial carina is straight as an arrow, but highly offset. Appears to maintain furthest distance from distal carina. Anterior tooth I suspect. Complication: There's a significant amount of root and uneven cracking to grapple with in base cross-section
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Hi everyone! I recently acquired some little Therapod teeth from the Hell Creek of Carter County, Montana. They were advertised as "Dromaeosaurus" so I knew right away most were going to be little Nanos which I was fine with. I screened out the ones that were definite Nanos and was left with these three little mysteries. No ridge along the crown so Acheroraptor is out. the serration densities were a little unusual so I figured I post them to see if any might be Dakotaraptor or if I'm just seeing things. I posted a larger pic of the lingual twist of tooth one right under it since couldn't get it to show up well otherwise. So what do you all think? I can retake photos if need be if it will help as well. Any insight is appreciated as always! Tooth 1 Tooth 2: Tooth 3:
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- cretaceous
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