Newsgroups: sci.bio
Path: utzoo!rising
From: rising@zoo.toronto.edu (Jim Rising)
Subject: Old Genera
Message-ID: <1991Jun7.131450.4467@zoo.toronto.edu>
Date: Fri, 7 Jun 1991 13:14:50 GMT
Organization: U of Toronto Zoology

Lampshells very close in appearance to modern Lingula are found in
the Burgess Shale (Cambrian).  Whether or not they're put into a
different genus is in part a matter of interpretation, but certainly
that morphology has been very conservative.  Their habitat (muddy 
bottom of shallow sea) has also been around for a long time, probably
little changed in physical aspects.
-- 
Name:     Jim Rising
Mail:     Dept. Zoology, Univ. Toronto, Toronto, Ontario, Canada    M5S 1A1
UUCP:     uunet!attcan!utzoo!rising 
BITNET:   rising@zoo.utoronto.ca