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  Nautilus umbilicatus, Print, Allonautilus scrobiculatus, also known as the crusty nautilus or fuzzy nautilus,

  Nautilus umbilicatus, Print, Allonautilus scrobiculatus, also known as the crusty nautilus or fuzzy nautilus, is a species of nautilus native to the waters around New Guinea, specifically New Britain and Milne Bay, and the Solomon Islands. A. scrobiculatus is instantly recognizable by the large open umbilicus, which is around 20% of the shell diameter at its widest point. This species, along with the closely related A. perforatus, were originally placed in the genus Nautilus, but have recently been given their own genus on account of significant morphological differences. The most obvious are features of the shell, including crease and an encrusting layer (periostracum) that covers most of the shell. Gills and reproductive structures also differ significantly from members of the genus Nautilus. The shell is usually up to around 18 cm in diameter, although the largest specimen ever record、クレジット：Ａｌｂｕｍ／ｑｕｉｎｔｌｏｘ／共同通信イメージズ　※エディトリアル使用のみ。表紙、広告、プロモーション、商業目的での利用はお問合せください。クレジットは必ず表記してください。

  商品コード: 2022110106083

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  2018年09月19日

  Great cormorant (Phalacrocorax carbo) on shallow water

  Great cormorant (Phalacrocorax carbo) on shallow water, standing, Kiskunsag National Park, Hungary, Europe、クレジット：ｉｍａｇｅＢＲＯＫＥＲ．ｃｏｍ／Ｈｅｉｎｚ　Ｈｕｄｅｌｉｓｔ／共同通信イメージズ

  商品コード: 2021032310100