Comments on: Wooster’s Fossil of the Week: a baculitid ammonite (Cretaceous of Wyoming) http://woostergeologists.scotblogs.wooster.edu/2011/11/13/wooster%e2%80%99s-fossil-of-the-week-a-baculitid-ammonite-cretaceous-of-wyoming/ A World to Explore Thu, 23 May 2013 20:20:50 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Wooster Geologists » Blog Archive » Wooster’s Fossil of the Week: a long and skinny bryozoan (Upper Cretaceous of Wyoming and South Dakota, USA) http://woostergeologists.scotblogs.wooster.edu/2011/11/13/wooster%e2%80%99s-fossil-of-the-week-a-baculitid-ammonite-cretaceous-of-wyoming/comment-page-1/#comment-8881 Wooster Geologists » Blog Archive » Wooster’s Fossil of the Week: a long and skinny bryozoan (Upper Cretaceous of Wyoming and South Dakota, USA) Sun, 17 Jun 2012 05:35:38 +0000 http://woostergeologists.scotblogs.wooster.edu/?p=5120#comment-8881 [...] Please say hello to Pierrella larsoni Wilson & Taylor 2012 — a new genus and species of ctenostome bryozoan from the Upper Cretaceous (Campanian-Maastrichtian) Pierre Shale of Wyoming and South Dakota. I imagine it as a graceful little thing spreading delicately through the dark interiors of baculitid ammonite conchs on a muddy Cretaceous seafloor. Above is a fossil of Baculites formed when sediment filled the shell and lithified. The shell itself dissolved away, leaving the internal mold  of rock (or steinkern) as a kind of cast of the interior. (But don’t ever call it a “cast”!) Pierrella larsoni encrusted the inside surface of Baculites and is thus preserved as a series of connected teardrops on the outside of the internal mold. The specimen is from Heart Tail Ranch, South Dakota, and the scale bar is 10 mm. (Baculites was described in an earlier Fossil of the Week post.) [...]

]]> By: Mark Wilson http://woostergeologists.scotblogs.wooster.edu/2011/11/13/wooster%e2%80%99s-fossil-of-the-week-a-baculitid-ammonite-cretaceous-of-wyoming/comment-page-1/#comment-6121 Mark Wilson Sun, 13 Nov 2011 15:25:01 +0000 http://woostergeologists.scotblogs.wooster.edu/?p=5120#comment-6121 We sure enjoyed your visit back to Old Woo, Stephanie. Good luck with your thesis topic search!

]]> By: Stephanie Jarvis http://woostergeologists.scotblogs.wooster.edu/2011/11/13/wooster%e2%80%99s-fossil-of-the-week-a-baculitid-ammonite-cretaceous-of-wyoming/comment-page-1/#comment-6120 Stephanie Jarvis Sun, 13 Nov 2011 15:19:44 +0000 http://woostergeologists.scotblogs.wooster.edu/?p=5120#comment-6120 I remember that sample!! One of my favorites :)

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