What an articulated giraffe neck looks like
April 16, 2013
The cervical series of Giraffa camelopardalis angolensis FMNH 34426, articulated by Mike and me and photographed by Mike back in the summer of 2005, cropped and composited by me recently, not previously posted because there’s just too much cool stuff, man. But we’re working on it.
By the way, if you want the details on this critter:
UPDATE April 23, 2014: What a maroon–I completely forgot to report the size of this thing! When we articulated all the centra and measured them (without cartilage, obviously), we got a length of 171 cm. When we measured the centra individually, leaving off the anterior condyles, we got a length of 164 cm. I think the discrepancy can be explained by the relative shallowness of the posterior cotyles of the vertebrae–as you can see in the big image above, the condyles do not nest completely within the cotyles, so each one does contribute a little bit to the length of the neck.
The measurements of each vertebra, as recorded by Mike in my notebook in the FMNH mammalogy collections in 2005, are here:
Just for completeness, I should note that in our neck cartilage paper (Taylor and Wedel 2013b), we found that cartilage added considerably to the length of the articulated neck in many amniotes. Based on the intervertebral spacing in horses, 1-2 cm of cartilage between these giraffe vertebrae doesn’t seem unreasonable, which would bring the length of the neck to perhaps 1.8 meters. Amazingly, this is only 75% of the longest giraffe necks on record, which are up to 2.4 meters (Toon and Toon 2003).
- Taylor, Michael P., and Mathew J. Wedel. 2013c. The effect of intervertebral cartilage on neutral posture and range of motion in the necks of sauropod dinosaurs. PLOS ONE 8(10): e78214. 17 pages. doi:10.1371/journal.pone.0078214
- Toon, A., and Toon, S.B. 2003. Okapis and giraffes. In: M. Hutchins, D. Kleiman, V. Geist, and M. McDade (eds.), Grzimek’s Animal Life Encyclopedia, 2nd ed. Vol 15: Mammals IV, 399–409. Gale Group, Farmington Hills.