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Found 8 results

  1. Astragalus bone of unknown critter

    Hi all, Apologies if I ruffle feathers with my ignorance of how things work around here but I did check out the posting guidelines. An initial and sound ID of the type of bone was made by the "Fossil Guy", Paul Murdoch, but it would be nice to narrow it down a little more than that. I've attached an archive of photos of all angles of the bone. The specimen weighs 99 g, and has overall dimensions of 77 mm * 52 mm * 39 mm, and I can do a displacement test to get its true density and volume if that helps with the ID. The fossil (so far unverified IN PERSON but passes match and taste test; taking to the ROM in Toronto for ID next week) was found off the north coast of Prince Edward Island while snorkeling in August of this year. It looked like a chunk of electrical insulator half-buried in the sand, but when I dove down to retrieve it, I noticed that it didn't feel like any material I've ever handled before, so I took it back and let it dry. This was found in 50' proximity of 30' tall red sandstone cliffs, being eroded by the warming waters of the gulf of the St. Lawrence. Based on the red staining of the specimen, I suspect it's a part of a skeleton either distributed along the bottom of the ocean in the area or still in the side of the cliff. Any help in narrowing down the age and former owner of this bone would be much appreciated! I apologize for the zip file but it only contains images. Thanks! James fossilphotoswithscale.zip
  2. Astragalus

    Found a fairly large astragalus, which I suspect might be from the Giraffidae family... Any takers on a more accurate ID?
  3. Bison Bos

    Do I have a reference for a bison or bos astragalus ?
  4. Iowa mammal bone ID help

    Hi everyone, I found what I think are a lumbar vertebra and an astragalus bone. I'm not sure how old they are, but they both seem pretty weathered and possibly mineralized. Both appear to be from bovids(?). These were found on a river sandbar around Ames, IA after recent spring flooding. Does anyone know how to distinguish bison from cattle bones? The vertebra is 35 cm wide, 10 cm long, and 8 cm tall. The astragalus is 7.4 cm long, 5.5 cm wide, and 4 cm deep.
  5. Edit to add: more likely a phalange This was found in the river at the confluence of the Blue Earth and Minnesota River in South Central Minnesota on August 3, 2018. It appears to me to be an astragalus, the size of that of a white tailed deer, but the shape is not quite right. It matches none of the astragali found in Miles Gilbert's Mammalian Osteology. The "bump" at about the 4cm mark in two of the photos seems like a very distinctive feature, yet I cannot find an identification for this. About our area: This area was, in early American times, the land of the Sioux Indians and the bison. Geologically, this area is very rich in silica. We find a lot of mineralized bones of bison, bos, Odocoileus virginianus, etc. This is the north eastern edge of the great plains.
  6. Astragalus of camel, Bovid or ?

    hello all, I found this astragalus bone from Miocene/ Pliocene Siwaliks. i am curious whether it is of camel or of bovid.
  7. Equus sp.

    Horse Teeth 'Modern' horse teeth are very hypsodont (high-crowned) to deal with wear caused by eating gritty and/or fibrous foods like grasses. A mature horse may have as many as 44 teeth, which include: 12 incisors (6 upper and 6 lower) Canine teeth are usually absent in female horses but may be present in males. Cheek teeth (4 premolars and 3 molars per side) have very complex enamel patterns. The first premolars (upper and lower) in horses (sometimes called the 'wolf teeth') are vestigial and often absent. Upper cheek teeth (premolars and molars) can be recognized by the relatively square shape (except for the second premolar and third molar) when viewing the occlusal (chewing) surface. Lower cheek teeth (premolars and molars) can be recognized by the relatively rectangular shape when viewing the occlusal (chewing) surface (except for the second premolar and third molar). Horse 'foot' bones 'Modern' horses are monodactyl (one-toed). The metapodials (hand and foot bones) are reduced to a single unit on each leg. There are three 'toe bones' - phalanges (singular is phalanx) on each foot...phalanx I, phalanx II and phalanx III. The third phalanx is the 'hoof core' Unfortunately, I have never collected an intact phalanx III so I have not pictured one here. The astragalus (ankle bone) is only present on the hind legs.
  8. Astragalus

    Hi people! A friend of mine collected the astragalus of the photo from a fossiliferous site with Pleistocene mammals in southern Brazil. Although we have a large collection of fossils at the university, we couldn't identify it. We have already excluded horses, tapirs, ground sloths, sabertooth cats...could it be a bear or possibly a mastodont?
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