About: Fordilla   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

Fordilla are small bivalves with valves that are equal in size and suboval in shape. In size Fordilla specimens reach a total shell length of up to 4 millimetres (0.16 in) and a height of 25 millimetres (0.98 in).[7][9] The shells are compressed laterally and the back edge is slightly broadened. The rear adductor is less developed and smaller than the front adductor, while the small pedal retractor muscle scar is positioned near the front adductor scar.[7] The valve hing is usually straight to slightly convexly curved and each valve will have at most one tooth present. The external surface of the shell occasionally show faint ribbing.[7] The inner shell layers of Fordilla species, as with the related genus Pojetaia, consist of layers of carbonate which is akin to the laminar aragonite laye

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  • Fordilla
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  • Fordilla are small bivalves with valves that are equal in size and suboval in shape. In size Fordilla specimens reach a total shell length of up to 4 millimetres (0.16 in) and a height of 25 millimetres (0.98 in).[7][9] The shells are compressed laterally and the back edge is slightly broadened. The rear adductor is less developed and smaller than the front adductor, while the small pedal retractor muscle scar is positioned near the front adductor scar.[7] The valve hing is usually straight to slightly convexly curved and each valve will have at most one tooth present. The external surface of the shell occasionally show faint ribbing.[7] The inner shell layers of Fordilla species, as with the related genus Pojetaia, consist of layers of carbonate which is akin to the laminar aragonite laye
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abstract
  • Fordilla are small bivalves with valves that are equal in size and suboval in shape. In size Fordilla specimens reach a total shell length of up to 4 millimetres (0.16 in) and a height of 25 millimetres (0.98 in).[7][9] The shells are compressed laterally and the back edge is slightly broadened. The rear adductor is less developed and smaller than the front adductor, while the small pedal retractor muscle scar is positioned near the front adductor scar.[7] The valve hing is usually straight to slightly convexly curved and each valve will have at most one tooth present. The external surface of the shell occasionally show faint ribbing.[7] The inner shell layers of Fordilla species, as with the related genus Pojetaia, consist of layers of carbonate which is akin to the laminar aragonite layer found in extant monoplacophora.[10] The structuring is similar to shell layering found in the extinct genera Anabarella and Watsonella which is thought to suggest members of the phylum Mollusca developed nacre independently several times.[10] Due to the size and age of the fossil specimens, Fordilla are included as part of the Turkish Small shelly fauna.
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