Английская Википедия:Cardiodictyon
Шаблон:Short description Шаблон:Automatic taxobox
Cardiodictyon is a genus of lobopodian known from 518 millions years old Chengjiang Lagerstätte. 525 millions years old partial fossil is also reported.[1] It has ~25 pairs of legs, each associated with a pair of dorsal plates.
Each leg terminates in a pair of claws.[2] It may or may not have a head shield,[3] though it certainly has an expanded head.[4]
In 2022, a 518 million years old specimen of C. catenulum was researched and shown an unsegmented head and a brain composed of three separate cephalic parts.[1] However, although "three parts" in this study means prosocerebrum, protocerebrum and deutocerebrum,[1] it is different from earlier studies that referred protocerebrum, deutocerebrum and tritocerebrum as tripartite brain of arthropod, and treated posocerebrum as part of protocerebrum.[5][6]
References
Шаблон:Lobopodia Шаблон:Taxonbar
- ↑ 1,0 1,1 1,2 Шаблон:Cite journal
- ↑ Ramsköld, L., & Chen, J.-Y. (1998). Cambrian Lobopodians: Morphology and Phylogeny. In Arthropod fossils and phylogeny (pp. 107–150). New York: Columbia University Press. Шаблон:ISBN
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
