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From the album: Calvert Cliffs
Choptank Formation Virginia Miocene Photographed exactly as found, with brilliant, polished surface when dry! Collected on private property with permission. -
Unusual coloration. Typically these are red, sometimes with buff patches, but not usually all buff. The broken areas show the buff color to be a layer on the outside as there is red showing through the breakage. Collected from fallen cliff matrix in the bay containing index fossils of the Drum Cliff Member, Shattuck Zone 18. Donated to the Delaware Museum of Natural History
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From the album: Calvert Cliffs
Can you believe I found this just sitting there, sticking out of a block of landslide material on the beach and wiggled it out with a screw driver? Never found even a suggestion of one before and this is only one of two I found in three days of carving through that block to discover the rest of its treasures. The other, sadly, is not in as good a shape, but still a treasure! Found at Matoaka Beach, St Leonard, Maryland.- 2 comments
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From the album: Calvert Cliffs
Whelk, Siphonal devexa Aperture view Middle Miocene St. Leonard, Maryland Choptank Formation Drum Cliff Member This is one of four I found in the fallen matrix in four days of excavation. It is the only one that I found intact.© Heather JM Siple 2018
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From the album: Calvert Cliffs
Whelk, Siphonal devexa Aperture view Middle Miocene St. Leonard, Maryland Choptank Formation Drum Cliff Member This is one of four found in the fallen matrix in four days of excavation. It is the only one that was found intact.© Heather JM Siple 2018
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From the album: Calvert Cliffs
Snail, Siphonalia devexa Middle Miocene St Leonard, Maryland Choptank Formation Drum Cliff Member Excavated from landslide material NW of Matoaka beach access in St Leonard, Maryland© Heather JM Siple 2018
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From the album: Calvert Cliffs
Mussel Shells, Perna condensa Middle Miocene Choptank Formation Excavated from matrix submerged in the Chesapeake Bay, about 10 feet off of the beach at St. Leonard, MD, at low tide. Internal molds from a Miocene mussel bed, left in fine clay and stabilized with Paleobond to prevent disintegration© Heather JM Siple 2018
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From the album: Calvert Cliffs
Collected loose on the beach in St. Leonard, Maryland middle Miocene Choptank Formation Drum Cliff Member Chesapectin nefrens is an index fossil for the Drum Cliff Member of the Choptank Formation, meaning that whatever chunk of matrix one may find fallen out of the cliffs, the precise layer is known so that other fossils in the same block can be identified. These are a very common find at St. Leonard and other places, but I particularly liked the coloration on this one!© Heather JM Siple 2018
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Excavated from matrix in the Chesapeake Bay, about 10 feet off of the beach at low tide. View is external on both valves, but hard outer coating has been lost to decay. Valves are pearlescent.
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This specimen shows the original sheen and probably original coloration of the shell. It popped out of the matrix as you see it and required almost not cleaning. This specimen was stabilized, but stabilization did not change the appearance at all. Excavated from a chunk of matrix fallen from the cliffs into the Chesapeake Bay. Donated to the Delaware Museum of Natural History.
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This specimen was made incredibly soft by the surrounding matrix. The thin veneer of glossy coloration has worn away, but can be seen on this specimen, which came from the same 2 ft x 1ft x 1ft block of matrix that fell out of the cliff into the bay. Half a dozen of these were collected from that and one other small, adjacent block that day, along with more than two dozen other species. Layer originally designated Shattuck Zone 18. Donated to the Delaware Museum of Natural History.
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Sometimes you just get lucky. This geoduck (pronounced gooey-duck) was sitting with its mate in living state, filled with matrix, under a pile of landslide rubble at the water's edge. The exteriors of both shells were almost completely clean of matrix. Most other specimens were badly cracked in the matrix and would never have survived the fall. This shell was donated to the Delaware Museum of Natural History.
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From the album: Calvert Cliffs
I excavated this from matrix that fell out of the Drum Cliff Member of the Choptank Formation in Calvert Cliffs. I have looked at all the books and online resources I have to find a species, but nothing quite matches. If anyone has a species, I'd love to hear! This is the only specimen I've ever seen, let alone found. This one, like most other shells in the matrix, is extremely fragile and would not have survived exposure to the elements long.-
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Collected on the beach. Donated to the Delaware Museum of Natural History.
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Collected from landslide material in the bay. Donated to the Delaware Museum of Natural History.
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Collected in landslide material in the Chesapeake Bay. Donated to the Delaware Museum of Natural History.
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Due to the extremely fragile nature of this specimen, and the species in general, I was loathe to clear out any more of the matrix from the interior of the shell, so bits and pieces of other shells are present. The large central piece is the inner "cup," which attaches to the "saucer" at only a very small point in the tip. Collected from landslide material in the bay. Donated to the Delaware Museum of Natural History.
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Collected from matrix from Shattuck Zone 17 that washed into the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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Collected from matrix washed into the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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This piece was excavated out of a block of matrix deposited in the Chesapeake Bay by a landslide. It was donated to the Delaware Museum of Natural History.
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Collected from matrix deposited in the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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Collected from matrix deposited in the Chesapeake Bay by landslide. These shells are extremely fragile and are not to be found loose on the beach. Most disintegrated when I was working the matrix. This specimen was donated to the Delaware Museum of Natural History.
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Excavated from matrix deposited in the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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I never knew if the oyster shells on the beach were fossil or modern until I pulled this out of a block of matrix deposited by landslide into the Chesapeake Bay. This specimen was donated to the Delaware Museum of Natural History. Genus changed from Parahyotissa.
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Collected from matrix deposited in the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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