Fossil bovine?

I found this bit of fossil bone at Maxey at the weekend. The fossils from the gravel in these here parts are apparently Ipswichian, which is a Pleistocene interglacial stage about 120,000 years ago. It appears to be a metacarpal or metatarsal of an ungulate, and at first I suspected Red Deer. But, I think it is too big (see my hand for scale), so more likely to be bovine, perhaps an aurochs or bison. Anyone have a clue how to identify these bones?

I just found an online paper on sexing American and European bison using metacarpal and metatarsal morphometrics. The line drawings particularly of the metacarpal looks very like my bone. The distal width of the bone below is 7.2cm (that is, the width of the widest part, where the articulation bit is). The measured mixed bison have DW values of 6.83-8.17cm (mean 7.51) for males and 5.91-6.93cm (mean 6.36) for females. If it were that species and that bone, therefore, our animal would appear to be a male.

Texas LRGV Part 13. Mammals etc

White-tailed Deer


Fox Squirrel

Coyote, Laguna Atascosa





Bottle-nosed Dolphins, off South Padre Island



Nine-banded Armadillo, Laguna Atascosa

Rio Grande Leopard Frog, Estero Llano Grande



Lizards

Texas LRGV Part 12. Other landbirds 2

White-tipped Dove, Laguna Atascosa

White-tipped Dove and Common Ground-dove, Estero Llano Grande


Tropical Parula, Estero Llano Grande

Rufous-backed Robin (perhaps the rarest bird I saw), Laguna Atascosa


Rubythroated Hummingbird, Estero Llano Grande

Ruby-crowned Kinglet, Estero Llano Grande







Greater Roadrunners

Great Kiskadee, Quinta Mazatlan

Plain Chachalaca, Quinta Mazatlan

Common Pauraque, Estero Llano Grande


Loggerhead Shrike, near Sebastian


Eastern Phoebe

Yellow-rumped Warbler

Vermillion Flycatcher, Estero Llano Grande

Verdin, Salineño

Texas LRGV Part 11. Mixed digiscoped etc 2

Tricolored Heron, South Padre Island

Reddish Egret, South Padre Island

Piping Plover, South Padre Island

Caspian Tern, South Padre Island


American Wigeon, South Padre Island



Greater Yellowlegs, South Padre Island



Black-necked Stilt, South Padre Island

White Ibis, Laguna Atascosa

Great Blue Heron, South Padre Island


Sandhill Cranes, Laguna Atascosa

Cooper's Hawk, Estero Llano Grande

Red-eared Sliders and Mud Turtles, Estero Llano Grande

Aplomado Falcon



Forster's Terns, South Padre Island


American Oystercatcher, South Padre Island