Search the Community
Showing results for tags 'hesperornis'.
-
From the album: Skeleton models
Cretaceous of North America, model digitally sculpted by me.© Jan Frost
-
- 1
-
- avian
- flightless
-
(and 1 more)
Tagged with:
-
Excellent paper that provides great insights into Hesperornithiformes. Some of the photos can also aid in identification of isolated elements. https://www.mdpi.com/1424-2818/14/4/267/htm
-
- 3
-
- brodavis
- hell creek formation
-
(and 2 more)
Tagged with:
-
I've always been fascinated by the Cretaceous sea and its myriad of terrifying carnivores, many that would've made Jaws look meek. After watching BBC's Sea Monsters, I made it my goal to compile a box of sea monster fossils. I started this journey 10 years ago, and finally completed the box recently. Allow me to present my Predators of the Cretaceous Sea collection, and take you on a journey to the most dangerous sea of all times. The box measures 20.25 inches long. Inside are 24 unique predator fossils. I will introduce them from left to right, top to bottom: Rhombodus binkhorsti Age: 70.6 - 66 mya | late Cretaceous Formation: Severn Formation Locality: Bowie, Maryland, USA Size: 1 meters Diet: Molluscs and crustaceans art by Nobu Tamura --------------- Polyptychodon interruptus Age: 105.3 - 94.3 mya | Cretaceous Formation: Stoilensky Quarry stratigraphic unit Locality: Stary-Oskol, Belgorod Oblast, Russia Size: Maybe 7 meters (This is a tooth taxon so size is not confirmed) Diet: Anything it could catch Note: If you consider Polytychodon a nomen dubium, then this is a Pliosauridae indet. art by Mark Witton ----------------- Prognathodon giganteus Age: 70.6 - 66 mya | late Cretaceous Formation: Ouled Abdoun Basin Locality: Khouribga Phosphate Deposits, Morocco Size: 10-14 meters Diet: Everything art by SYSTEM(ZBrushCentral) --------------- Coloborhynchinae indet. Age: 99.7 - 94.3 mya | late Cretaceous Formation: Kem Kem Beds Locality: Southeast Morocco Size: 7 meters (high estimate) Diet: Fish and cephalopods
- 29 replies
-
- 15
-
- bird
- collection
- (and 28 more)
-
My newest addition is a rare Cretaceous Hesperornis sp. tibiotarsus. It was found in the Pierre Shale Form in Fort Peck, MT. Thank you @Auspex for the identification and explanation that Hesperornis material is rare bc "thin-walled hollow bones are not readily preserved, and in the case of this flightless species, most died in the ocean and were scavenged in that highly efficient recycling environment". The specimen is 9 inches and was found in many pieces and carefully puzzled back together.
- 4 replies
-
- 7
-
- fossil
- hesperornis
-
(and 1 more)
Tagged with:
-
I've been looking for hesperornis fossils for a while, and recently, an acquaintance presented me with a challenge: He would send me a bag of broken up hesperornis verts for me to assemble. In return, I had to send him the biggest and best vert back. He also warned me it could be a real headache. I took the challenge. Lo and behold! I was presented with over 60 broken pieces, some of which were tiny and terribly fragmented (not shown in picture) Nonetheless, I googled for pictures of hesperornis verts and put what limited knowledge I had on fossil assembly into this task. After 18 hours, this is what I got: All in all, it was a tiring but satisfying job and now I can happily say I am the proud owner of a chain of associated hesperornis verts
- 4 replies
-
- 11
-
- fossil prep
- hesperornis
-
(and 4 more)
Tagged with:
-
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 and found photos on line of a jaw fragments from an Ichthyornis from Kansas that had a similar looking tooth. I am talking general shape really, not saying that is what this is. I also found a comparative study of Hesperornis and Ichthyornis teeth on line and it has a similar shape to one of the Hesperornis teeth in that study. I am very unfamiliar with Avian teeth so I am strictly going by what little research I could find on line. I know there are a couple of Hesperorniformes and an unnamed Ichthyornithean from Hell Creek so it is possible that this tooth belongs to a bird that is not an Enantionithean but I thought this is an ideal tooth to put on the forum and seek some help from those with far more knowledge. Any comments, insights, or thoughts ?
- 13 replies
-
- avisaurus
- cretaceous bird tooth
- (and 3 more)
-
Three models, three very different animals, three methods: Anomalocaris, sculpted in fimo according to fossil drawings, 6 cm long Hesperornis, digitally distorted from a recent bird skeleton and Tyrannosaurus skull, 3d printed, 9cm long. Hydrodamalis, skull digitally distorted from a dog skull, postcranial plywood and putty like my whales, 38 cm. Aloha J
- 23 replies
-
- 2
-
- 1/20
- anomalocaris
-
(and 4 more)
Tagged with:
-
I just acquired this old reproduction Hesperornis skull to go with the substantial number of bones (from four individuals) I have picked-up over the past several months. The skeletal elements, in total comprising maybe 30% of a composit bird, require quite a bit of preparation to make them presentable (they are all from S. W. South Dakota (Pierre Shale), and are heavily crystallized). Eventually, they should make a pretty impressive mount