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emus (was Re: Vegavis gen. nov. - new anseriform in today's Nature)
Not only emus, but rheas also are doing quite well in South America where
there are quite a lot of predators. For example they are common in Pantanal
which possibly has the densest jaguar population in the world, not to
mention maned wolfs, foxes etc.
A bit off topic, but since we are talking K/T extinction and You often hear
that rudists went extinct in the mid-Maastrichtian, here is a paper from
the last issue of Caribbean Journal of Science:
First Record of the Rudist Bivalve Mitrocaprina tschoppi (Palmer) from the
Maastrichtian of Jamaica
SIMON F. MITCHELL AND GAVIN C. GUNTER.
ABSTRACT.?The large plagioptychid rudist bivalve Mitrocaprina tschoppi
(Palmer) is recorded from the Guinea Corn Formation (Late Maastrichtian) of
central Jamaica. This is the first record of this species outside of Cuba.
M. tschoppi occurs in rhythm D6 of the Guinea Corn Formation, Macgillavryia
Bed 1, together with a rudist assemblage including Praebarrettia
sparcilirata (Whitfield), Macgillavryia nicholasi (Whitfield), Chiapasella
trechmanni Mitchell & Gunter, Plagioptychus zansi Chubb, Titanosarcolites
sp.; Titanosarcolites cf. alatus Chubb and Antillocaprina cf. occidentalis
(Whitfield). The pallial canals of the Jamaican specimens are identical to
the Cuban material, but the Jamaican
specimens are larger (about one and a half times the size).
Signor & Lipps at work again?