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Fw: Who says hoazin dinosaurs cannot think, fly, and climb?
Accidentally ended up only in my account.
Are Cuculidae and Musophagidae still considered sistergroups?
----- Original Message -----
From: "Stephan Pickering" <firstname.lastname@example.org>
> RESPONSE: For nearly 200 years, the hoatzin has been
> placed in its own family among the Galliformes, even
> as late as 1992 in the magnificent del Hoyo volumes.
> On the basis of scleral ossicles, Kevin de Querioz and
> D.A. Good in 1988, positioned this theropod with the
> Cuculiformes, as did Avise/Nelson/Sibley in 1994 using
> mitochondrial DNA. Sibley/Ahlquist 1990, on the basis
> of DNA/DNA hybridization, classified the hoatzin as a
> neotropical cuckoo. As I mentioned,
> Pycraft/Verheyen/Stegmann believed the dinosaur to be
> a turaco, and Walter Bock in 1992 rejected the cuckoo
> alignment because the hoatzin's anisodactyl pes is not
> the zygodactylous cuckoo pes.
> All DNA studies have been hampered in incomplete data
> sets, until Janice Hughes and Allan Baker (and I am
> grateful to Janice for sharing her data, which, in
> hastily typing my notes, was not mentioned in my
> previous note, for which apologies are offered) used
> six mitochondrial genes and one nuclear gene (an
> aligned sequence of 5.4kb, of 5487 base pairs). They
> used the hoatzin, six cuckoos, four turacos,Gallus,
> Turnix, Bubo, Chordeiles, Chaetura, Colius, resolving
> the often contradictory clade relationships of
> Sibley/Ahlquist et al. Their analysis were predicated
> upon PAUP 4.0b2a, the maximum-likelihood method
> elaborated by Quartet Puzzling of PUZZLE 4.0.2.
> The results: a historical and phylogenetic puzzle
> solved. The hoatzin is NOT a cuckoo, but a basal
> member of the clade of turacos. The hoatzin and
> Musophagidae are sister taxa.
> And so. Living dinosaurs are as mysterious, and
> wonder-full, as their pre-K/T ancestors.
> It was Stegmann who observed that nestling touracos
> have manual claws used for climbing as do hoatzins,
> although the wings of hoatzins are convergent with
> some cuckoos, but turacos and hoatzins share
> pterylosis/DNA/ontogeny patterns.
> Now, if only someone could genetically design a 48
> foot long, 18 foot high secretarydinosaur to take a
> bath in that North Carolina ornithologist's
> --- David Marjanovic <email@example.com> wrote: