图:Wilson44691 · Public domain · Wikimedia Commons
- 学名
- Linguliformea
- 分类等级
- 亚门
- 上级类群
- 腕足动物门
- 大类
- 其他动物
- 数据库
- NCBI 分类
分类阶元
下级类群(1)
- 舌形贝纲 Lingulata 纲
百科正文
分类
- 舌形贝形亚门包括以下分类群:
- 舌形贝纲(Lingulata)
- †顶孔贝目(Acrotretida,又名乳孔贝目或乳房贝目)
- 舌形贝目(Linguilida)
- †管洞贝目(Siphonotretida)
- †神父贝纲(Paterinata)
- †神父贝目(Paterinida)
- 地位未定
- †科 Mickwitziidae
以上内容摘自维基百科「舌形貝型亞門」,按 CC BY-SA 4.0 使用,去掉了参考文献、外部链接等尾部小节,公式改写成了纯文本。全文、配图和出处见原文。
英文维基百科补充中文条目比较短,下面是英文条目「Linguliformea」的原文
Linguliformea is a subphylum of inarticulate brachiopods. These were the earliest of brachiopods, ranging from the Cambrian into the Holocene. They rapidly diversified during the Cambrian into the Ordovician, but most families became extinct by the end of the Devonian.
The articulation in these brachiopods is lacking. These brachiopods have adductor and oblique muscles, but no diductor muscles. The anus is located at the side of the body. The pedicle is a hollow extension of the ventral body wall. Posterior body wall separates dorsal and ventral mantles.
The shells are usually made up of apatite (calcium phosphate), however rare cases have calcite or aragonite shells.
以上内容摘自英文维基百科「Linguliformea」,按 CC BY-SA 4.0 使用,去掉了参考文献、外部链接等尾部小节,公式改写成了纯文本。全文、配图和出处见原文。