Brachiosaurus and human metacarpals compared

October 27, 2019

Nothing too serious here, just a fun shot I got while in the collections at BYU this past week. The Brachiosaurus element is metacarpal 1 (thumb column) from BYU 4744, the Potter Creek material. I highlighted my own metacarpal 3. There is a metacarpal 3 from this specimen, but I didn’t see it on the shelf. According to D’Emic and Carrano (2019), the MC3 is 60cm long, vs 57cm for this MC1. So this photo could have been 3cm more impressive!

Oh, ignore the tag on the left that says “radius”. You could be forgiven for thinking that the bone I have my hand on is a radius, but the radius from this individual is 1.34 meters long, or about two-and-a-third times the length of this metacarpal.

Reference

D’Emic, M.D. and Carrano, M.T., 2019. Redescription of Brachiosaurid Sauropod Dinosaur Material From the Upper Jurassic Morrison Formation, Colorado, USA. The Anatomical Record.

2 Responses to “Brachiosaurus and human metacarpals compared”

  1. Mike Taylor Says:

    My immediate reaction was surprise that the human metacarpal was so robust. (But yes, I checked against skeletons, it does look right.)

  2. Asier Larramendi Says:

    ….as well as that of Brachiosaurus, the MC is certainly robust! Also, is very interesting to observe that Brachiosaurus had more elongated forelimbs than Giraffatian. This MC I is about 3% shorter than that of SII, while the associated radius is 8% longer than Berlin specimen!


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