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Showing results for tags 'mt laurel'.
Found 11 results
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From the album: Delaware Fossils
Belemnitella americana showing internal molds. Upper Cretaceous Mt. Laurel Formation Delaware, USA It's not often one finds an internal mold of the guard where the internal texture is clearly visible. Although internal molds of other animals are common at this locality, any internal molds of belemnites are few and far between. Broken though it is, the lower specimen is one of my favorite belemnites.© c. 2022 Heather JM Siple
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The treasure of the Reedy Point Spoils is in the micros! This is one of over 100 micros I collected in one day just surface collecting after the spoils area was freshly cleared of vegetation -- and freshly cleared of much of the remaining matrix. Of all of those micro fossils, this is the only one of this species and very possibly the only one I have found in 16 years of collecting at that site. The Reedy Point Spoils is a 220+ acre dredge deposit from the Chesapeake and Delaware Canal. The matrix is a combination of material from the Mt Laurel and Navesink Formations, which are not exposed in Delaware, but are on the surface in their namesake towns in NJ.
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- bivalve
- cretaceous
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From the album: Delaware Fossils
So sweet! This is a very rare Cretaceous echinoid (sea urchin), Boletechinus. They are typically no more than a couple mm in diameter. This one is shown next to a pencil eraser. Most of the ones in the Smithsonian's collection come from sand and silt removed for the creation and maintenance of a canal, which exposed fossils well below the surface. This one comes from New Castle County, Delaware. -
I just put together a rather shakey video of the C & D Canal in New Castle County, Delaware in preparation for a trip I'm leading this fall. I didn't find anything Earth-shattering that day, but it gives and idea of the locale and the finds. https://www.youtube.com/watch?v=BMfXz-_B5fA&t=93s
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This was found in the spoils from dredging the C&D Canal in the 1980s. Recent removal of spoils sand for road construction in the area exposed previously- inaccessible layers of sand. It is currently one of the most common finds at the site.
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This was found in the spoils from dredging the C&D Canal in the 1980s. Recent removal of spoils sand for road construction in the area exposed previously- inaccessible layers of sand. It is currently one of the most common finds at the site.
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This was found in the spoils from dredging the C&D Canal in the 1980s. Recent removal of spoils sand for road construction in the area exposed previously- inaccessible layers of sand. This species is not listed in the Delaware Geological Survey's bulletin about the fossils of the Canal. It is distinguished by its small size and non-plicate (no ridges) central area of the shell.
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I could really, really use some help on this one! I found this 1.5" cephalopod in the Cretaceous MT Laurel sand at the C&D Canal, Delaware City, DE (north side). There are only four cephalopods listed for this site in the Delaware guide, the straight-shelled Bacculites ovatus, Oxybelaoceras (which is heavily ribbed and doubles over on itself tightly in a U shape) and the golden bullets of Belemnitella americana. There are two other cephalopods listed for the canal zone - at different sites- in the Delaware guide, but they are both tightly-coiled.This one was loosely-coiled, probably in a spiral, and lightly ribbed all the way around. Most of the ribbing has broken off of this specimen, but you can just make out how they go all the way around at the upper left edge of the first photo. The closest thing I can find to this is a lightly-ribbed, loosely-coiled Cirroceras conradi. It is listed in the Cretaceous Fossils of New Jersey, through which all the canal formations run, but the only specimens found in NJ were in the Navesink formation. C. conradi also gets smoother on the inside of the coil, at least in the image in the book. I'm not very good at figuring out the text descriptions. The C&D Canal isn't supposed to cut through the Navesink formation, either, but it is as close as I can find. I'm thinking this might be one specimen I should not lose in a drawer, but I have no idea what it is or where to turn once I figure it out. It just isn't supposed to be there!
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From the album: Delaware Fossils
Didymoceras sp. Same specimen as previous image, shown from a different angle. See notes from previous image. -
From the album: Delaware Fossils
Small section of a heteromorphic ammonite of the genus Didymoceras. Probably D. platycostatum. Late cretaceous Found at Reedy Point North, Delaware City, Delaware Mt Laurel Formation Identified from W. J. KENNEDY AND W. A. COBBAN. UPPER CAMPANIAN (UPPER CRETACEOUS) AMMONITES FROM THE MARSHALLTOWN FORMATION-MOUNT LAUREL BOUNDARY BEDS IN DELAWARE. J. Paleont., 71(1), 1997, pp. 62-73 Thanks to abyssunder and piranha for the ID help!
