Cycloneritida (nerites and false-limpets) is an order of land snails, freshwater snails, and sea snails.[1]
These are gastropod molluscs within the subclass Neritimorpha. 14 of the families in the order are extant, and eight of the families are extinct.
It was previously categorized as the clade Cycloneritimorpha.[2]
According to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), as well as the Cycloneritida, the subclass Neritimorpha also contains the (entirely fossil) clade Cyrtoneritimorpha, plus a number of other fossil families that are currently unassigned.
The earliest evolutionary forms of Cycloneritimorpha show double visceral organs, double gills, and normally a double-chambered heart.[3]
The taxonomy of Cycloneritida is based on work by Kano et al. (2002)[4] that recognizes 4 clades. These clades are established on genetic analysis (28S rRNA) of recent species only. These clades proposed by Kano are ranked as superfamilies in the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005).
The spelling of Cycloneritimorpha has been amended to the order Cycloneritida in the new taxonomy of the Gastropoda by Bouchet and Rocroi in 2017 [5]
Clade Cycloneritimorpha contains:
Cycloneritida (nerites and false-limpets) is an order of land snails, freshwater snails, and sea snails.
These are gastropod molluscs within the subclass Neritimorpha. 14 of the families in the order are extant, and eight of the families are extinct.
It was previously categorized as the clade Cycloneritimorpha.
According to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), as well as the Cycloneritida, the subclass Neritimorpha also contains the (entirely fossil) clade Cyrtoneritimorpha, plus a number of other fossil families that are currently unassigned.
The earliest evolutionary forms of Cycloneritimorpha show double visceral organs, double gills, and normally a double-chambered heart.
Les Cycloneritimorpha sont un ordre de mollusques gastéropodes.
Cet ordre est considéré comme invalide par le WoRMS qui lui préfère l'ordre des Cycloneritida.
Selon World Register of Marine Species (14 avril 2016)[1] :
Les Cycloneritimorpha sont un ordre de mollusques gastéropodes.
Cet ordre est considéré comme invalide par le WoRMS qui lui préfère l'ordre des Cycloneritida.
고리갈고둥류(Cycloneritimorpha[1])는 복족류에 속하는 분류군의 하나이다. 갈고둥류에 속하는 복족류 연체동물이다. 이 분류군 안에 14개 과는 아직 현존하며, 8개 과는 멸종 상태에 있다.
복족류 분류 (부쉐 & 로크루아, 2005년)에 의하면, 갈고둥류는 고리갈고둥류뿐만 아니라 굽은갈고둥류(현재는 모두 멸종)도 포함하고 있으며, 화석으로만 발견되는 과들도 포함하고 있다. 고리갈고둥류의 진화상 초기 형태는 이중으로 된 내부 장기와 아가미 그리고 2심실 구조로 된 심장이 통상적으로 나타난다.[2]
고리갈고둥류는 카노(Kano) 등의 연구(2002년)에 기반을 두고 분류하며[3], 4개의 분기군으로 나눈다. 이들 분기군들은 최근 종들만을 유전자 분석(28S rRNA)을 통해 구축한 것이다. 2005년 복족류 분류는 카노(Kano)가 제안한 이 분기군들을 상과로 분류했다.
고리갈고둥류 분류는 아래와 같다.
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