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The Devonian period is known as "The Age of Fish", but could also be known as "The Age of Brachiopods." In the Early / Lower Devonian, brachiopods reached the height of their diversity towards its end in the Emsian. We see the ancestral groups occurring, lingulids, craniids, orthids, protorthids, pentamerids, rhynchonellids and strophomenids, as well as the later successful groups we have seen before such as atrypids, athyrids and orthotetids, plus the rise of spiriferids, spiriferinids and productids and the beginning of the terebratulids. By the end of the Devonian , several of these groups are extinct or severely reduced in importance and brachiopods never quite recover. Also, the Devonian is the last time we see trilobites with such variation, large sizes and numbers and orthocerids too are much more uncommon after the rise of the goniatites. The massive tabulate coral reefs also disappear after the Devonian. Fascinating period and I hope to share some of its wonders with you. Equally, a lot of this is rather new to me, so I would be very grateful for any assistance, corrections or further information on my specimens. Thank you. The Early Devonian epoch is split into three stages, so let's start with the first of those, the Lochkovian, that began about 419 mya and finished roughly 411 mya. I have been sent a nice selection of brachiopods from the Kalkberg Formation, Helderberg Group by the Mighty @Misha, mostly. But the kind gentleperson also sent me this fascinating little bryozoan hash : It is dominated by fenestellids, which is usually the case in the Devonian, but other orders sill occur. These ones, I think, are Fenestella, but there are so many species in the formation that I wont take a guess as to species : Not sure what this one is ;
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- cordillera cantabrica
- cryptoschisma schultzii
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- early devonian
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- lochkovian
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- new york
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- costellisprifer concinnus
- bivalve
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- colorado quarry
- becraft
- becraft mountain
- becraft formation
- schizophoria
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Hey, So I was planning on going on a fossil hunt this summer in Oklahoma. I thought "Black Cat Mountain" would be a great place to start but I can't find anything on how to contact the owner "Bob Carrol". I've been on their website which has a phone number but it says its no longer in use. If anyone has contact information like a email or phone number that would be great. Anyway thank you for reading this message and have a nice day. Sincerely, Carson Betancourt
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- fossil hunting
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To trilobite experts: I found some partial exoskeletons of trilobites at Black Cat mountain in Oklahoma, that after cleaning and prepping, appear to have an appendage attached that kind of looks like a head. But looking at complete trilobites, I don't see this "head" anywhere. I found 3 of them like this. Photos of two of them are attached. Is this "head" even a part of the trilobite, and if it is, what exactly is it? Thanks for any help.
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- trilobite
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Black Cat Mountain - Dicranurus hamatus Trilobite
Texas Fossil Hound posted a gallery image in Member Collections
From the album: Cartier's favoroite fossils
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