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Showing results for tags 'striacoceras'.
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Here is a reconstruction of the orthocerid Striacoceras typum, eating one of the last surviving Eldredgeops rana trilobites. Two Botryocrinus crinoids wave in the current, and a colony of Pleurodictyum feeds on planctonic organisms.
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A reconstruction of the Mahantango Formation
Bringing Fossils to Life posted a topic in Paleo Re-creations
I just finished a reconstruction of the Mahantango ecosystem, based off of fossils I have found at corresponding sites. This certainly does not cover all species in this formation, but many of the most prominent (Sorry no Dipleura, haven't done that one yet). I recently learned about Striacoceras and re-identified many of my orthocerids as this obscure genus. Striacoceras is the brown orthocone in the background. I included two crinoid genera, (left to right) Ancyrocrinus and Botryocrinus. an Eldredgeops searches for prey. There are several Mucrospirifer brachiopods, some Orthonota bivalves, a couple ammonoids (Tornoceras and Agoniatites), and some Pleurodictyum coral. In the distance, a shoal of Bactrites drifts. This is one of my first entire ecosystems.- 5 replies
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I would appreciate confirmation that this cephalopod is Striacoceras. It is well articulated and comes apart in segments which allowed me to take some photos of the individual "puzzle pieces." This comes from the Devonian slopes at Deer Lake, Pennsylvania(Hamilton Group, Mahantango Formation). Back Story: On Labor Day weekend, Nancy and I stopped for 2 hours at a Deer Lake borrow pit on our way to St. Clair. While I scrambled on the steep slope checking rubble and excavating substrate, Nan decided to chisel open some large pieces at the bottom of the slope. She segmented a large piece of shale twice and the shale was totally blank - normally that would be enough, but Nan decided to give it one more whack and was delighted to discover this large, well-articulated/segmented cephalopod. I should mention that most of her best finds have come from chiseling open pieces that were left in plain site and overlooked by other collectors. I'll post some of the brachiopods found at Deer Lake in the Trips forum - also some very exciting Lepidendron finds at St. Clair.
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- cephalopod
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