[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Ears

To: "The Dinosaur Mailing List" <dinosaur@usc.edu>
Subject: Re: Ears
From: "David Marjanovic" <david.marjanovic@gmx.at>
Date: Thu, 4 Apr 2002 11:31:03 +0200
References: <Pine.LNX.4.33.0204041101380.10135-100000@poczta.ibb.waw.pl>
Reply-to: david.marjanovic@gmx.at
Sender: owner-dinosaur@usc.edu

----- Original Message -----
From: "Jerzy Dyczkowski" <jerzyd@poczta.ibb.waw.pl>
Sent: Thursday, April 04, 2002 11:10 AM

> How do we know what shape were "visible" or "outside" ears of extinct
animals

We don't, except for mammoths. :-)

> and especially, that
> mammals had them and dinosaurs had not?

Phylogenetic bracketing: Among living animals, only placentals and
marsupials have them. So while it's ambiguous whether multituberculates and
triconodonts had them, we can be pretty certain that no dinosaur ever did.

Follow-Ups:
- Re: Ears
  - From: Dann Pigdon <dannj@alphalink.com.au>

References:
- Ears
  - From: Jerzy Dyczkowski <jerzyd@poczta.ibb.waw.pl>

Prev by Date: Re: Cost in Aquatic Birds (long)
Next by Date: RE: Cost in Aquatic Birds (long)
Previous by thread: Ears
Next by thread: Re: Ears
Indexes: