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Pygope
''Pygope'' is an extinct genus of brachiopods belonging to the family Pygopidae. These brachiopods lived in open sea from the Jurassic Period, Kimmeridgian age (152.1–157.3 mya) up to Cretaceous Period, Barremian age (125.0–~129.4 mya). Some of the species are characterised by a smaller or larger perforation through the entire shell in older specimens, while others just have a depression somewhere on the midline. Younger specimens of the perforated species develop a hart-shape and subsequently both extensions merge, thus encircling a central passage which is in fact entire outside the shell. == Distribution ==
* ''P. catulloi'' occurs in Upper Jurassic (Tithonian) to Lower Cretaceous (Valanginian) of Austria, Bulgaria, Hungary, Italy, Poland, Romania and Switzerland. * ''P. diphya'' has been found in the Lower Cretaceous of Poland (Early Berriasian, Rogoza Klippes, Rogoznik, 49.5° N, 19.9° E,〔 ''cited in'' (【引用サイトリンク】title= Rogoza Klippes at Rogoznik )〕 ''Euxinus'' Zone-''Occitanica'' Zone, Sobotka and Korowa Member, Dursztyn Formation, Cisowa Skala, Bursukowa Skala, Lysa Skala, and Czorsztyn-Sobotka, 49.0° N, 20.0° E),〔 cited in (【引用サイトリンク】title= Cisowa Skala )〕 Slovakia (Berriasian, Rogoznik Member, Durstyn Formation), Kyjov, Puste Pole, 49.0° N, 20.0° E).〔 ''cited in'' (【引用サイトリンク】title= Kyjov - Puste Pole - bed 34.21 )〕 * ''P. janitor'' is present in the Upper Jurassic of Bulgaria (Kimmeridgian, ''Lacunosella sparcicosta'' zone, Nechinska Bara, Gorno Belotintsi, 43.5° N, 22.9° E),〔 ''cited in'' (【引用サイトリンク】title= Nechinska Bara, Gorno Belotintsi )〕 Hungary (Lower Tithonian, Szel-hegy, Gerecse Mts, 47.0° N, 18.0° E),〔 ''cited in'' (【引用サイトリンク】title= Szel-hegy )〕 Poland (Early through to Late Titonian, Rogoza Klippes, Rogoznik, 49.5° N, 19.9° E),〔 the Lower Cretaceous of Greenland (North Mols Bjerge, Traill Island, and Brorson Halvo, Wollaston Forland, both Lower Valanginian, Albrechts Bugt Member, Palnatokes Bjerg Formation east Greenland)〔 ''cited in'' (【引用サイトリンク】title= N Mols Bjerge, Traill Island, Palnatokes Bjerg Formation, E Greenland )〕 and Poland (Berriasian, ''Euxinus'' Zone-''Occitanica'' Zone, Sobotka and Korowa Member, Dursztyn Formation, Cisowa Skala, Lysa Skala, Bursukowa Skala, Czorsztyn-Sobotka and 49.0° N, 20.0° E).〔
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pygope」の詳細全文を読む
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