Phylum MolluscaClass PelecypodaPelecypods have actually two shells, or bivalves, that defend the soft components of the animal. The valves are usually of equal dimension (except in groups like the oysters) and shape and are hinged in ~ the back. Some types, such together oysters, live in huge groups that create beds or low-relief banks of shells, wherein the pets feed by filtering plankton and organic debris native the water. Various other bivalves burrow with the dirt or swim around in search of debris come eat. Numerous bivalve fossils in Delaware are preserved as steinkerns. Pelecypods are plentiful in the spoils indigenous the mountain Laurel formation on both political parties of the Canal in the vicinity of Reedy Point.




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Unless otherwise noted, photographs and figures space from jajalger2018.org one-of-a-kind Publication No. 18, through E. M. Lauginiger, 1988.


Exogyra ponderosa - wake up in the Marshalltown Formation, the Englishtown Formation, and the Merchantville FormationCretaceous Pelycypod illustrations from page 16, jajalger2018.org one-of-a-kind Publication No. 19, 1992. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"Ostrea mesentericaExogyra ponderosa - wake up in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationCretaceous Pelycypod illustrations from page 16, jajalger2018.org one-of-a-kind Publication No. 19, 1992. ","alt":""">
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Ostrea mesentericaExogyra ponderosa - wake up in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationCretaceous Pelycypod illustrations from page 16, jajalger2018.org special Publication No. 19, 1992.
Cymella bellaCretaceous Pelycypod illustrations from page 15, jajalger2018.org one-of-a-kind Publication No. 19, 1992. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"Nemodon enfaulensisCymella bellaCretaceous Pelycypod illustrations from page 15, jajalger2018.org special Publication No. 19, 1992. ","alt":""">
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Nemodon enfaulensisCymella bellaCretaceous Pelycypod illustrations from page 15, jajalger2018.org special Publication No. 19, 1992.
3, 4. Pyncnodonte mutabilis - specimens indigenous the mount Laurel Formation, additionally occur in the Marshalltown Formation5, 6. Ostrea (Lopha) falcata - specimens indigenous the mountain Laurel Formation, also occur in the Marshalltown Formation" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1, 2. Exogyra cancellata - specimens from the mountain Laurel Formation3, 4. Pyncnodonte mutabilis - specimens from the mount Laurel Formation, likewise occur in the Marshalltown Formation5, 6. Ostrea (Lopha) falcata - specimens native the mount Laurel Formation, also occur in the Marshalltown Formation","alt":""">
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1, 2. Exogyra cancellata - specimens indigenous the mountain Laurel Formation3, 4. Pyncnodonte mutabilis - specimens indigenous the mount Laurel Formation, also occur in the Marshalltown Formation5, 6. Ostrea (Lopha) falcata - specimens from the mount Laurel Formation, additionally occur in the Marshalltown formation
2. Trigonia sp. - specimen indigenous the mountain Laurel Formation, also occurs in the Marshalltown Formation3. Anomia sp. - specimen from the mount Laurel Formation, likewise occurs in the Marshalltown Formation and also the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1. Neithea quinquecostata - specimen from the mount Laurel Formation, additionally occurs in the Marshalltown Formation and the Merchantville Formation2. Trigonia sp. - specimen from the mount Laurel Formation, likewise occurs in the Marshalltown Formation3. Anomia sp. - specimen indigenous the mountain Laurel Formation, also occurs in the Marshalltown Formation and the Merchantville FormationPlus More","alt":""">
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1. Neithea quinquecostata - specimen indigenous the mount Laurel Formation, likewise occurs in the Marshalltown Formation and the Merchantville Formation2. Trigonia sp. - specimen native the mountain Laurel Formation, additionally occurs in the Marshalltown Formation3. Anomia sp. - specimen indigenous the mount Laurel Formation, additionally occurs in the Marshalltown Formation and the Merchantville FormationPlus an ext
2. Nemodon grandis sohli - specimen from the mount Laurel Formation3, 4. Gryphaeostrea vomer - specimens from the mount Laurel Formation, additionally occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen native the mount Laurel FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1. Anomia sp. - specimen native the mount Laurel Formation, likewise occurs in the Marshalltown Formation and the Merchantville Formation2. Nemodon grandis sohli - specimen from the mount Laurel Formation3, 4. Gryphaeostrea vomer - specimens indigenous the mount Laurel Formation, also occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen indigenous the mount Laurel FormationPlus More","alt":""">
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1. Anomia sp. - specimen native the mount Laurel Formation, likewise occurs in the Marshalltown Formation and the Merchantville Formation2. Nemodon grandis sohli - specimen native the mount Laurel Formation3, 4. Gryphaeostrea vomer - specimens native the mount Laurel Formation, also occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen indigenous the mountain Laurel FormationPlus an ext
Cretaceous Pelecypod photo from plate I, jajalger2018.org Report of examination No. 21, by T. E. Pickett, 1972." data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"3. Gervilliopsis ensiformis - specimen from the Merchantville development Cretaceous Pelecypod picture from key I, jajalger2018.org Report of examination No. 21, by T. E. Pickett, 1972.","alt":""">
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3. Gervilliopsis ensiformis - specimen from the Merchantville development Cretaceous Pelecypod photograph from key I, jajalger2018.org Report of examination No. 21, by T. E. Pickett, 1972.
1. Nuculana pittensis2. Nuculana stephensoni3. Nemodon enfaulensis4. Nemodon grandis Sohli5. Postligata crenata6. Pteria sp.7. Lucina parva8a,b. Ostrea mesenterica?9. Protocardia parahillana10. Isocardia bulbosa11. Solyma sp.12a,b. Tellina georgianaCretaceous Pelecypod photographs native Plate VII, jajalger2018.org Report of examination No. 21, by T. E. Pickett, 1972. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"All specimens from the Biggs farm locality within the mount Laurel Formation1. Nuculana pittensis2. Nuculana stephensoni3. Nemodon enfaulensis4. Nemodon grandis Sohli5. Postligata crenata6. Pteria sp.7. Lucina parva8a,b. Ostrea mesenterica?9. Protocardia parahillana10. Isocardia bulbosa11. Solyma sp.12a,b. Tellina georgianaCretaceous Pelecypod photographs native Plate VII, jajalger2018.org Report of examination No. 21, by T. E. Pickett, 1972. ","alt":""">
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all specimens indigenous the Biggs farm locality within the mountain Laurel Formation1. Nuculana pittensis2. Nuculana stephensoni3. Nemodon enfaulensis4. Nemodon grandis Sohli5. Postligata crenata6. Pteria sp.7. Lucina parva8a,b. Ostrea mesenterica?9. Protocardia parahillana10. Isocardia bulbosa11. Solyma sp.12a,b. Tellina georgianaCretaceous Pelecypod photographs from Plate VII, jajalger2018.org Report of investigation No. 21, through T. E. Pickett, 1972.
2. Hemiaster sp. - specimen from the Englishtown Formation3. Gervilliopsis ensiformis - specimen indigenous the Merchantville Formation4, 5. Cucullaea neglecta - specimens indigenous the Marshalltown Formation6. Cucullaea vulgaris - specimen from the Merchantville Formation7. Glycimeris mortoni - specimen indigenous the Merchantville Formation8. Inoceramus proximus - specimen native the Englishtown FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1. Cliona cretacica - specimen from the mount Laurel Formation2. Hemiaster sp. - specimen indigenous the Englishtown Formation3. Gervilliopsis ensiformis - specimen native the Merchantville Formation4, 5. Cucullaea neglecta - specimens from the Marshalltown Formation6. Cucullaea vulgaris - specimen from the Merchantville Formation7. Glycimeris mortoni - specimen from the Merchantville Formation8. Inoceramus proximus - specimen from the Englishtown FormationPlus More","alt":""">
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1. Cliona cretacica - specimen from the mount Laurel Formation2. Hemiaster sp. - specimen from the Englishtown Formation3. Gervilliopsis ensiformis - specimen native the Merchantville Formation4, 5. Cucullaea neglecta - specimens native the Marshalltown Formation6. Cucullaea vulgaris - specimen native the Merchantville Formation7. Glycimeris mortoni - specimen native the Merchantville Formation8. Inoceramus proximus - specimen indigenous the Englishtown FormationPlus an ext
2. Exogyra ponderosa erraticostata - specimen from the Marshalltown Formation3. Exogyra costata - specimen native the mountain Laurel Formation4. Pyncnodonte mutabilis - specimen native the Marshalltown FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1. Exogyra ponderosa - specimen from the Marshalltown Formation, additionally occurs in the Englishtown Formation and the Merchantville Formation2. Exogyra ponderosa erraticostata - specimen native the Marshalltown Formation3. Exogyra costata - specimen from the mountain Laurel Formation4. Pyncnodonte mutabilis - specimen indigenous the Marshalltown FormationPlus More","alt":""">
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1. Exogyra ponderosa - specimen native the Marshalltown Formation, likewise occurs in the Englishtown Formation and the Merchantville Formation2. Exogyra ponderosa erraticostata - specimen indigenous the Marshalltown Formation3. Exogyra costata - specimen indigenous the mountain Laurel Formation4. Pyncnodonte mutabilis - specimen indigenous the Marshalltown FormationPlus an ext
2. Liopistha protexta - specimen from the Marshalltown Formation, likewise occurs in the mount Laurel Formation, the Englishtown Formation, and also the Merchantville Formation3. Cymella bella - specimen from the Merchantville formation 4. Crassatella sp. - specimen from the mount Laurel Formation, also occurs in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"1. Pholadomya occidentalis - specimen native the Merchantville Formation2. Liopistha protexta - specimen native the Marshalltown Formation, additionally occurs in the mount Laurel Formation, the Englishtown Formation, and the Merchantville Formation3. Cymella bella - specimen indigenous the Merchantville development 4. Crassatella sp. - specimen indigenous the mountain Laurel Formation, also occurs in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationPlus More","alt":""">
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1. Pholadomya occidentalis - specimen from the Merchantville Formation2. Liopistha protexta - specimen from the Marshalltown Formation, likewise occurs in the mount Laurel Formation, the Englishtown Formation, and also the Merchantville Formation3. Cymella bella - specimen indigenous the Merchantville development 4. Crassatella sp. - specimen native the mount Laurel Formation, also occurs in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationPlus an ext
Liopistha protexta - occurs in the mount Laurel Formation, the Englishtown Formation, and the Merchantville FormationPostligata crenata - occurs in the mount Laurel Formation and also the Merchantville FormationCucullaea sp. - occurs in the mountain Laurel Formation, the Marshalltown Formation, and the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-ykWOt_9W9S8" class="colorbox" data-cbox-img-attrs=""title":"Clavagella armata - wake up in the mountain Laurel FormationLiopistha protexta - wake up in the mountain Laurel Formation, the Englishtown Formation, and the Merchantville FormationPostligata crenata - occurs in the mount Laurel Formation and also the Merchantville FormationCucullaea sp. - occurs in the mount Laurel Formation, the Marshalltown Formation, and also the Merchantville FormationPlus More","alt":""">
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Clavagella armata - wake up in the mountain Laurel FormationLiopistha protexta - wake up in the mount Laurel Formation, the Englishtown Formation, and the Merchantville FormationPostligata crenata - wake up in the mount Laurel Formation and also the Merchantville FormationCucullaea sp. - wake up in the mountain Laurel Formation, the Marshalltown Formation, and also the Merchantville FormationPlus more