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Showing results for tags 'vermicularia'.
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Hello, I found this gastropod along the Sanibel Causeway in Ft. Myers, FL. They were in a pile of shells being used for landscaping so I presume that the sediments came from a nearby quarry of ?Pleistocen age. . I have consulted the Florida Museum's database and found a similar species: http://specifyportal.flmnh.ufl.edu/ip/ (specimen #100196) VERMICULARIA SPIRATA under the Family Turritellidae. Can someone help me verify and identify this fossil? Thank you!
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By any chance does anyone recognize these little orb/circular structures/features in some of the damaged Vermicularia tubes in these shots? Not sure if they might be simply immature bivalves or something else? I pried out a few of them and I'm no wiser as they are so small and I dont see any real features/markings under magnification... The two that I pried out are approx .5mm wide but the others still in the tubes are a bit bigger. The 2nd and third frames in the 2nd photo makes them look like something that could be a small echinoid with star shaped markings but that might be deceiving. they actually look more like absolutely smooth micro PVC endcaps, not spheres/orbs. In my other recent Garage finds thread Adam had a good question about operculums and I dont even know if they had one or not...So if you all have any insight I'd love to hear/know.. Thanks for the help. Regards, Chris
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From the album: ECHINOIDS & OTHER INVERTEBRATES
This is a soft-ball size coral head (a corallum) from the Pliocene of Florida. This specimen has a number of interesting features: The epitheca (the thin covering over the exterior) is removed -- probably ground down by tumbling on the sea bottom -- on the dorsal portion of the corallum. The proper walls of the calces (the individual corallites) are exposed in the damaged area (though these walls are indistinct in Dichocoenia). On the left in the image, two clams of the Family Pholadidae ('rock-burrowing clams') are imbedded in the corallum. Hiatella arctica is one such pholadid known from these deposits. On the right in the image, the epitheca has overgrown a Vermicularia shell. Here is a handy glossary of coral-related terms (not all of them illustrated here): Calyx (plural calces): the bowl-shaped depression or "seat" in which the living polyp resides. Corallite: the skeleton produced by one polyp, which may or may not be part of a colony Epitheca: the outermost skeletal layer of a corallite which sometimes shows growth lines. Non-trabecular skeletal sheath along outside colony margin. Tabula (plural tabulae): a horizontal partition (or floor) dividing the corallite skeleton. Septum (plural septa): vertical blade or partition within the calyx of a corallite that are normally radially arranged. Dissepiment: small curved plate in a corallite near the tabulae that is convex inward and upwards. Mural pores: the small holes in the epitheca of some tabulate corals. Columella: an axial rod in a corallite usually formed by the fusion of two or more septa that typically forms a topographic prominence in the central part of the calyx. (This image is best viewed by clicking on the "options" buttonon the upper right of this page => "view all sizes" => "large".)© ©Harry Pristis 2014
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I've been making images of a corallum which I've had in storage. This one is from APEC shell pit in Sarasota County, Florida. The age is Pliocene. I had set it aside to take to the Ste. Marie aux Mines show, but didn't get back there. I thought I might put one of these images in my invertebrates album. When I set out to ID this corallum, I realized how little I know about coral. So, I've done some searching and reading before I put labels on the images. I know there are coral experts here. Would some of you please check my labels for accuracy? I don't want to mislead anyone with bad info in the Gallery.