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RE: Flightless bat? Flightless pterosaur?



That's the short-tailed bat (Mystacina tuberculata). It essentially walks
around using its folded wings aided with the hind feet hunting
invertebrates, though it can still fly and echolocate if necessary. Given
the lack of terrestrial predators until recently, it's not a stretch to see
how this form of hunting could be selected for. The idea of said bat
eventually losing all flight ability would be feasible. Well, without
non-native species at least.

Adam Britton


-----Original Message-----
From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu] On Behalf Of
Michael Habib
Sent: Tuesday, 27 January 2004 8:21 AM
To: dinosaur list
Subject: Re: Flightless bat? Flightless pterosaur?

Well, there is a ground-dwelling bat species, though it isn't completely
flightless (used to be two, until quite recently).

--Mike Habib


On 1/26/04 8:11 AM, "David Peters" <davidrpeters@earthlink.net> wrote:

> Jaime Headden wrote:
> 
> Potentially, a flightless bat can occur, as much as a flightless
> pterosaur.
> 
>>>>>> 
> 
> If bats and pterosaurs hatched from eggs, yes. They could walk out of
> the nest and fend for themselves after a suitable rearing period.
> 
> But they don't.
> 
> Both are born and hang on to their dear mother until mature enough, no
> sooner than 50 percent the size of the adult. More of the story will be
> out before summer.
> 
> All putative pterosaur babies are tiny adults. They are the result of
> phylogenetic size squeezes (as in early mammals, birds, dinosaurs). At
> least that's what my good old single-tree cladogram tells me.
> 
> You can tell the immature fenestrasaurs (including pterosaurs) from tiny
> adults because the tibiae are shorter than the femora in juvies. That
> helps them keep four on the floor, so to speak. Also, they don't ossify
> until independence. Ironically they have slightly smaller orbits. So
> they're not particularly "cute".
> 
> It all goes back to Cosesaurus and Longisquama, as you'll see. They all
> go through a bit of metamorphosis when puberty kicks in.
> 
> David Peters
> St. Louis
>