Here are the MDLs for The Clan of the Caveman (AKA The Caveman Clan)...
contained in the CaveMan.zip file are the following....

Player.mdl - Player BMP of Captain Caveman Character
H_player.mdl - Player Head BMP
Gib2.mdl - Gib Mid section of Caveman Character

also
Caveman.gif - small version of the Caveman Logo

I tested them using Mdled 1.5 and created MDLs with them,
so they should be fine. You need to unpack your Quake Reg
Pak file with an unpacker and put these in your id1/progs
directory. Please back up the originals before coping these
there. I created this for the new Clan I'm putting together,
The Clan of the CaveMan, and hopefully it will be included
in a new Clan Multiskin Version. If your interested in joining 
please get back to me.

You can reach me at
Curemode@aol.com
Website:http://members.aol.com/curemode/   
Quake section is quake.htm

Hope you like it,
Chris Feehan