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Recent Posts
- Muscle scars in tiny conical fossils: A new paper describing the musculature of Devonian tentaculitids from Armenia and what they mean for the biology and evolution of the group
- Possible Linkages Between Climate and Human History in Ohio (the 4.2 yr. ka interval)
- A spotty Middle Ordovician trilobite from Estonia: A new paper describing an ancient parasitic infection
- A new paper on James Parkinson’s neglected 19th century contributions to crinoid paleontology
- A New Tree Ring Study from the Kashmir Valley, western Himalaya
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Tag Archives: Ordovician
Wooster’s Fossils of the Week: An encrusted bivalve external mold from the Upper Ordovician of Indiana
I love this kind of fossil, which explains why you’ve seen so many examples on this blog. We are looking at an encrusted external mold of the bivalve Anomalodonta gigantea found in the Waynesville Formation exposed in Franklin County, Indiana. … Continue reading
Wooster’s Fossil of the Week: An undescribed cyclostome bryozoan from the Upper Ordovician of Oklahoma
Paul Taylor and I presented a talk this month at the Larwood Symposium of the International Bryozoology Association in Thurso, Scotland. (Yes, way in the tippy-top of Scotland. Very cool.) Paul found the above wiggly bryozoan encrusting the interior of … Continue reading
Wooster’s Fossil of the Week: A bored and formerly encrusting trepostome bryozoan from the Upper Ordovician of Indiana
The lump above looks like your average trepostome bryozoan from the Upper Ordovician. I collected it from the Whitewater Formation of the Cincinnatian Group at one of my favorite collecting sites near Richmond, Indiana. In this view you can just … Continue reading
Wooster’s Fossils of the Week: Beautiful trace fossils from the Upper Ordovician of southern Ohio
Every year we highlight at least one of the fossils found and studied by Wooster’s Invertebrate Paleontology class as part of their field and laboratory exercises. This year it is this nice slab of trace fossils collected by Curtis Davies … Continue reading
Wooster’s Fossils of the Week: A trace fossil from the Ordovician of Estonia
The fossils above have been in a previous post as examples of hyolith internal molds from the Middle Ordovician of northern Estonia. I collected them on my first visit to the Baltic countries in 2006. This week I want to … Continue reading
Wooster’s Fossil of the Week: Upper Ordovician bivalve bioimmured by a bryozoan
This week’s fossil is a simple and common form in the Cincinnatian Series (Upper Ordovician) of the Ohio, Indiana and Kentucky tri-state area. We are looking above at the base of a trepostome bryozoan that encrusted the outside of an … Continue reading
Wooster’s Fossils of the Week: A pair of molded nautiloids from the Upper Ordovician of northern Kentucky
Two nautiloids are preserved in the above image of a slab from the Upper Ordovician of northern Kentucky. (I wish I knew which specific locality. This is why paleontologists are such fanatics about labeling specimens.) The top internal mold (meaning … Continue reading
Wooster’s Fossil of the Week: An early bryozoan on a Middle Ordovician hardground from Utah
Last week I presented eocrinoid holdfasts on carbonate hardgrounds from the Kanosh Formation (Middle Ordovician) in west-central Utah. This week we have a thick and strangely featureless bryozoan from the same hardgrounds. It is very common on these surfaces, forming … Continue reading
Wooster’s Fossils of the Week: Eocrinoid holdfasts on a Middle Ordovician hardground from Utah
Back in the late 1980s and early 1990s, several students and I did fieldwork in the Middle Ordovician Kanosh Formation in west-central Utah. One year we were joined by my friend Tim Palmer of the University of Aberystwyth. Together, Chris … Continue reading
Wooster’s Fossil of the Week: A crinoid calyx from the Upper Ordovician of southern Ohio
This week’s contribution from the Wooster collections will be short. If all is going well, as this is posted I’m on my way to the Fourth International Palaeontological Congress in Mendoza, Argentina. I hope to have a few posts from … Continue reading