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Re: JP3 Thoughts (frilled Dilophosaurus revisited)

To: "The Dinosaur Mailing List" <dinosaur@usc.edu>
Subject: Re: JP3 Thoughts (frilled Dilophosaurus revisited)
From: "David Marjanovic" <david.marjanovic@gmx.at>
Date: Tue, 24 Jul 2001 23:49:39 +0200
References: <200107241732.MAA32624@www7.mail.umn.edu> <002401c1146b$367b7000$5d020f3f@hppav> <3B5DC917.1E181FB0@gotnet.net>
Reply-to: david.marjanovic@gmx.at
Sender: owner-dinosaur@usc.edu

> What about [...] mammals (monotremes) what is their poison derived from?

The poison spur of monotremes may be a synapomorphy of mammals, it is
present in *Jeholodens* and *Zhangheotherium*, IIRC. The poison gland is in
the leg and not homologous with anything I can think of.

There are shrews with poisonous saliva.

The poison of the pitohui is homobatrachotoxin which occurs in some
Amazonian frogs -- an AMAZING case of convergence.

Follow-Ups:
- Re: JP3 Thoughts (frilled Dilophosaurus revisited)
  - From: Christopher Srnka <theclaw10@home.com>

References:
- Re: JP3 Thoughts (frilled Dilophosaurus revisited)
  - From: "Demetrios M. Vital" <vita0015@umn.edu>
- Re: JP3 Thoughts (frilled Dilophosaurus revisited)
  - From: "Mickey Mortimer" <Mickey_Mortimer11@msn.com>
- Re: JP3 Thoughts (frilled Dilophosaurus revisited)
  - From: Daniel Bensen <dbensen@gotnet.net>

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