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Collected on the beach after a storm. This is an index fossil for the Drum Cliff member of the Choptank Formation, Shattuck Zone 18. Choptank is the dominant formation at Matoaka Beach. Donated to the Delaware Museum of Natural History.
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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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- chesapeake bay
- gastropod
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Collected from matrix that washed into the Chesapeak Bay by landslide. Donated to the Delaware Museum of Natural History.
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- cheaspeake bay
- leonard
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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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This piece was excavated out of a block of matrix deposited in the Chesapeake Bay by a landslide. This specimen was donated to the Delaware Museum of Natural History.
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- drum cliff
- choptank
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Collected from matrix in the Chesapeake Bay that was deposited by landslide. Donated to the Delaware Museum of Natural History.
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- drum cliff
- gastropod
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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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Collected from matrix deposited in the Chesapeake Bay by landslide. Donated to the Delaware Museum of Natural History.
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- chesapeake bay
- leonard
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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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- chesapeake bay
- miocene
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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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From the album: Fossil Flourescence
Turritella plebia Miocene Choptank Formation St. Leonard, Maryland Viewed under short-wave Ultraviolet light-
- turritella
- matoaka
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Excavated from a block of submerged martrix deposited in the Chesapeake Bay by landslide. The common name, geoduck, is pronounced "gooey-duck." This specimen was donated to the Delaware Museum of Natural History.
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Found on the beach near Matoaka Beach cabins. This specimen has several pearl buds, including some that developed around predation holes.
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There has been much debate about the identity of this strange item on the forum. I finally solved the mystery thanks to the (click next) Calvert Marine Museum web site . These are a reasonably common find on the beach near Matoaka Cabins. They vary in size and shape, owing to the different species and ages of the sharks that produced them as much as the teeth shed by the same sharks. What they all seem to have in common is the black, polished surface, the generally oval shape (which can vary in proportions), and the appearance of an outer coating that splits on one side.
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- enterospirae
- shark
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This was excavated from a block of matrix collected from submerged landslide material in the Chesapeake Bay. The common name of the shell is pronounced "gooey-duck." The height listed is the diameter of the opening between valves on the posterior side, where the siphon extended.
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- maryland
- calvert cliffs
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Chesapectin nefrens is an index fossil for the Drum Cliff Member of the Choptank Formation. This example is particularly nice because the interior is almost completely layered in pearl.
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This piece was excavated out of a block of matrix deposited in the Chesapeake Bay by a landslide. The shell was partially exposed in the water. The dark side was still in the matrix while the light side was exposed to the water. The pock marks on the light side are from modern barnacles which I removed during preparation. L. heros is a species with variation in shape. It may have a taller or flatter spire and the overall shape may be more or less globular. This specimen was donated to the Delaware Museum of Natural History.
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Lunatia heros is a predatory snail that drilled holes in other mollusks' shells to eat the contents. One often finds hole that they left behind in the surrounding fossil shells. The shells of L. heros are variable, having more or less extended spirals, more or less globoular shape, etc. This specimen was donated to the Delaware Museum of Natural History.
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- calvert cliffs
- moon
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I erroneously identified this earlier as the similar Turritella plebia, until looking at one more reference! Mariacolpus octonaria is an index fossil for the Drum Cliff Member of the Choptank Formation. Donated to the Delaware Museum of Natural History