WebJan 8, 2014 · Pectinidae, a large group of marine bivalves comprising more than 300 species worldwide, inhabit a diverse array of habitats, enabling an enormous radiation, and yielding many different life forms and adaptations. This apparent diversity led to the distinction of ecotypes based on shell morphology and lifestyle. WebArgopecten gibbus Picture by FAO. Classification / Names Common names Synonyms CoL ITIS WoRMS Bivalvia Pectinida Pectinidae. Environment: milieu / climate zone / depth range / distribution range Ecology Benthic; depth range 0 - 366 m (Ref. 83435), usually 8 - 11 m (Ref. 83435). Tropical ...
paleontology - How old are Pecten fossils in general? - Earth …
WebBiological evolution and phylogeny: Origin: Argopecten species b in early middle Miocene (Oak Grove Sand). Evolved to A. nicholsi of the Shoal River Formation and A. choctawhatcheensis of the Arca Faunizone into A. comparilis Tamiami, Pinecrest, Duplin, and Yorktown Formations A. comparilis evolved to A. circularis. Webphotoreception and eye development. In photoreception: Concave mirror eyes. Scallops ( Pecten) have about 50–100 single-chambered eyes in which the image is formed not by a … the island life texel
ADW: Argopecten gibbus: CLASSIFICATION
WebThis common fossil has existed over a very long geological time and still lives today! Characteristics of a good index fossil Some typical global index fossils and the ages they indicate.. Early Pleistocene 0.5 million Quaternary Period 2.6 million to 10,000 Tertiary Period 65 to 2.6 million WebArgopecten gibbus. Approximate geographical distribution (stippled areas) and principal fishing grounds (black areas). From Allen (1979). Lesser concentrations are found near … WebPecten gibbus Name Synonyms Aequipecten gibbus (Linnaeus, 1758) Argopecten gibbus (Linnaeus, 1758) Chlamys gibbus (Linnaeus, 1758) Ostrea gibba (Linnaeus, 1758) Pecten … the island lk21