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Re: Sauropod feeding*
Kenneth Carpenter wrote:
>> I wrote
> Sorry, but the Canadian Geese out here in the west graze on the ground.
The question is, is the long neck a legacy of their ducky, bottom
feeding, past, or is it a direct adaptation ot its current lifestyle?
> ... However, note that Stan's examples
> consist of selective feeders. Yes, they do have niche partitioning.
> However, I have been focusing on one group, Sauropoda, and am pointing
> out that Stan has yet explain why diplodocids have a broad, grazing
> type muzzle, while camarasaurids, etc. have a narrow, browsing muzzle.
Actually, that itself can be part of niche partitioning.
An example of this is found in the American mid-west. In that area
bison and pronghorn coexisted over a wide area. The bison is a
classical non-selective grazer, the pronghorn is a selective low
browser/grazer. They both feed at the same level (near ground level),
so the main difference is selectivity.
I brought in the wide range of forms because I think the diversity
of sauropods may, in part, have covered some of the same resource
utilization strategies that the various modern groups use in their
> >However, there is little (read none) evidence for arboreal leaf eaters
> >in the Late Jurassic (multituberculates being seed and fruit eaters).
> Actually they may have been omnivores, but that is a side issue (see
> Clemens and Kielan-Jaworowska, 1979, Multituberculata. IN Lillegraven
> et al, Mesozoic Mammals, ...
Yep, but still eating far more fruit and seed than leaf.
The peace of God be with you.