Phylum MolluscaClass PelecypodaPelecypods have actually two shells, or bivalves, that defend the soft parts of the animal. The valves are usually of equal dimension (except in teams like the oysters) and also shape and also are hinged at the back. Part types, such together oysters, live in big groups that develop beds or low-relief financial institutions of shells, whereby the animals feed by filtering plankton and also organic debris indigenous the water. Various other bivalves burrow through the mud or swim about in find of debris to eat. Numerous bivalve fossils in Delaware are maintained as steinkerns. Pelecypods are plentiful in the spoils native the mountain Laurel development on both sides of the Canal in the vicinity the Reedy Point.




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Unless otherwise noted, photographs and figures are from barisalcity.org unique Publication No. 18, through E. M. Lauginiger, 1988.


Exogyra ponderosa - wake up in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationCretaceous Pelycypod illustrations from web page 16, barisalcity.org unique Publication No. 19, 1992. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"Ostrea mesentericaExogyra ponderosa - wake up in the Marshalltown Formation, the Englishtown Formation, and the Merchantville FormationCretaceous Pelycypod illustrations from web page 16, barisalcity.org unique Publication No. 19, 1992. ","alt":""">
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Ostrea mesentericaExogyra ponderosa - occurs in the Marshalltown Formation, the Englishtown Formation, and the Merchantville FormationCretaceous Pelycypod illustrations from web page 16, barisalcity.org unique Publication No. 19, 1992.
Cymella bellaCretaceous Pelycypod illustrations from page 15, barisalcity.org unique Publication No. 19, 1992. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"Nemodon enfaulensisCymella bellaCretaceous Pelycypod illustrations from page 15, barisalcity.org special Publication No. 19, 1992. ","alt":""">
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Nemodon enfaulensisCymella bellaCretaceous Pelycypod illustrations from web page 15, barisalcity.org one-of-a-kind 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, additionally occur in the Marshalltown Formation" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1, 2. Exogyra cancellata - specimens from the mount Laurel Formation3, 4. Pyncnodonte mutabilis - specimens native the mountain Laurel Formation, additionally occur in the Marshalltown Formation5, 6. Ostrea (Lopha) falcata - specimens from the mount Laurel Formation, likewise occur in the Marshalltown Formation","alt":""">
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1, 2. Exogyra cancellata - specimens indigenous the mount Laurel Formation3, 4. Pyncnodonte mutabilis - specimens indigenous the mount Laurel Formation, also occur in the Marshalltown Formation5, 6. Ostrea (Lopha) falcata - specimens native the mount Laurel Formation, likewise occur in the Marshalltown development
2. Trigonia sp. - specimen indigenous the mount Laurel Formation, also occurs in the Marshalltown Formation3. Anomia sp. - specimen indigenous the mount Laurel Formation, additionally occurs in the Marshalltown Formation and also the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1. Neithea quinquecostata - specimen from the mount Laurel Formation, likewise occurs in the Marshalltown Formation and also the Merchantville Formation2. Trigonia sp. - specimen native 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 the Merchantville FormationPlus More","alt":""">
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1. Neithea quinquecostata - specimen indigenous the mountain Laurel Formation, additionally occurs in the Marshalltown Formation and the Merchantville Formation2. Trigonia sp. - specimen native the mount Laurel Formation, likewise occurs in the Marshalltown Formation3. Anomia sp. - specimen from the mount Laurel Formation, additionally occurs in the Marshalltown Formation and the Merchantville FormationPlus more
2. Nemodon grandis sohli - specimen indigenous the mount Laurel Formation3, 4. Gryphaeostrea vomer - specimens native the mountain Laurel Formation, likewise occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen from the mount Laurel FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1. Anomia sp. - specimen from the mount Laurel Formation, likewise occurs in the Marshalltown Formation and also the Merchantville Formation2. Nemodon grandis sohli - specimen native the mountain Laurel Formation3, 4. Gryphaeostrea vomer - specimens indigenous the mount Laurel Formation, additionally occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen from the mountain Laurel FormationPlus More","alt":""">
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1. Anomia sp. - specimen indigenous the mountain 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 from the mountain Laurel Formation, additionally occur in the Marshalltown Formation5. Nemodon grandis sohli - specimen from the mountain Laurel FormationPlus much more
Cretaceous Pelecypod picture from bowl I, barisalcity.org Report of investigation No. 21, by T. E. Pickett, 1972." data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"3. Gervilliopsis ensiformis - specimen native the Merchantville development Cretaceous Pelecypod photo from plate I, barisalcity.org Report of examination No. 21, through T. E. Pickett, 1972.","alt":""">
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3. Gervilliopsis ensiformis - specimen native the Merchantville formation Cretaceous Pelecypod photo from bowl I, barisalcity.org Report of examination No. 21, through 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 indigenous Plate VII, barisalcity.org Report of investigation No. 21, by T. E. Pickett, 1972. " data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"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, barisalcity.org Report of investigation No. 21, through T. E. Pickett, 1972. ","alt":""">
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every specimens native the Biggs farm yard locality in ~ 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 indigenous Plate VII, barisalcity.org Report of investigation No. 21, by T. E. Pickett, 1972.
2. Hemiaster sp. - specimen from the Englishtown Formation3. Gervilliopsis ensiformis - specimen indigenous the Merchantville Formation4, 5. Cucullaea neglecta - specimens native the Marshalltown Formation6. Cucullaea vulgaris - specimen from the Merchantville Formation7. Glycimeris mortoni - specimen native the Merchantville Formation8. Inoceramus proximus - specimen indigenous the Englishtown FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1. Cliona cretacica - specimen native the mount Laurel Formation2. Hemiaster sp. - specimen from the Englishtown Formation3. Gervilliopsis ensiformis - specimen indigenous the Merchantville Formation4, 5. Cucullaea neglecta - specimens native the Marshalltown Formation6. Cucullaea vulgaris - specimen from the Merchantville Formation7. Glycimeris mortoni - specimen native the Merchantville Formation8. Inoceramus proximus - specimen from the Englishtown FormationPlus More","alt":""">
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1. Cliona cretacica - specimen indigenous the mountain Laurel Formation2. Hemiaster sp. - specimen from the Englishtown Formation3. Gervilliopsis ensiformis - specimen from the Merchantville Formation4, 5. Cucullaea neglecta - specimens from the Marshalltown Formation6. Cucullaea vulgaris - specimen from the Merchantville Formation7. Glycimeris mortoni - specimen indigenous the Merchantville Formation8. Inoceramus proximus - specimen from the Englishtown FormationPlus more
2. Exogyra ponderosa erraticostata - specimen from the Marshalltown Formation3. Exogyra costata - specimen native the mountain Laurel Formation4. Pyncnodonte mutabilis - specimen from the Marshalltown FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1. Exogyra ponderosa - specimen native the Marshalltown Formation, additionally occurs in the Englishtown Formation and also the Merchantville Formation2. Exogyra ponderosa erraticostata - specimen native the Marshalltown Formation3. Exogyra costata - specimen native the mount Laurel Formation4. Pyncnodonte mutabilis - specimen from the Marshalltown FormationPlus More","alt":""">
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1. Exogyra ponderosa - specimen native the Marshalltown Formation, likewise occurs in the Englishtown Formation and also the Merchantville Formation2. Exogyra ponderosa erraticostata - specimen from the Marshalltown Formation3. Exogyra costata - specimen native the mountain Laurel Formation4. Pyncnodonte mutabilis - specimen native the Marshalltown FormationPlus much more
2. Liopistha protexta - specimen native the Marshalltown Formation, also occurs in the mountain Laurel Formation, the Englishtown Formation, and also the Merchantville Formation3. Cymella bella - specimen native the Merchantville development 4. Crassatella sp. - specimen indigenous the mountain Laurel Formation, likewise occurs in the Marshalltown Formation, the Englishtown Formation, and also the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"1. Pholadomya occidentalis - specimen indigenous the Merchantville Formation2. Liopistha protexta - specimen native the Marshalltown Formation, also 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, likewise occurs in the Marshalltown Formation, the Englishtown Formation, and 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 mountain Laurel Formation, the Englishtown Formation, and the Merchantville Formation3. Cymella bella - specimen native the Merchantville development 4. Crassatella sp. - specimen native the mountain Laurel Formation, likewise occurs in the Marshalltown Formation, the Englishtown Formation, and the Merchantville FormationPlus more
Liopistha protexta - wake up in the mount Laurel Formation, the Englishtown Formation, and the Merchantville FormationPostligata crenata - occurs in the mountain Laurel Formation and also the Merchantville FormationCucullaea sp. - wake up in the mountain Laurel Formation, the Marshalltown Formation, and also the Merchantville FormationPlus More" data-colorbox-gallery="gallery-geohydro-448-field_slideshow-B0OpIC8Ftd4" class="colorbox" data-cbox-img-attrs=""title":"Clavagella armata - occurs in the mount Laurel FormationLiopistha protexta - wake up in the mount Laurel Formation, the Englishtown Formation, and also 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","alt":""">
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Clavagella armata - occurs in the mountain Laurel FormationLiopistha protexta - occurs in the mount Laurel Formation, the Englishtown Formation, and the Merchantville FormationPostligata crenata - occurs in the mountain Laurel Formation and the Merchantville FormationCucullaea sp. - occurs in the mountain Laurel Formation, the Marshalltown Formation, and the Merchantville FormationPlus an ext