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Showing results for tags 'crinoid bulb'.
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Just a few bits that I received yesterday, some of which may be of interest to fans of Moroccan fossils. Firstly, a box full of the ubiquitous hybodontid shark fin spines (or 'spin fines', as I often call them during my less lucid moments). Common Kem Kem finds, but I do like them. The coin for scale in the middle is a shiny British fivepence, which is 18mm across, or 0.72/inch. Most of them need some prep, especially this beast, which may test my prep abilities, given how encrusted it is and how delicate these are. Secondly though, are these Crinoid float bulbs. I've never knowingly seen these before. Apparently, according to dealers online, they are from the Erfoud region. I can't find a great deal of information about how they actually functioned, but I'll have a little search of the scientific literature when I get the chance. The idea seems to be that they either floated on the top of the sea, allowing the crinoid to travel great distances, or they were temporarily anchored to the sea floor. Either way, they are magnificent things. Surface texture of the above specimen. Specimen #2 Specimen #3. As they are hollow, they have beautiful crystal growths on the inside, which can be seen when they break.
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I think this is a Crinoid bulb found in Oklahoma. One photo shows the outside and one photo shows the object cut into halves. Do you agree it is a Crinoid bulb?