Cardiodictyon
| Cardiodictyon | |
|---|---|
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| (unranked): | Panarthropoda |
| Phylum: | †"Lobopodia" |
| Class: | †Xenusia |
| Order: | †Archonychophora |
| Family: | †Cardiodictyidae |
| Genus: | †Cardiodictyon Hou, Ramsköld, and Bergström, 1991 |
| Type species | |
| Cardiodictyon catenulum Hou, Ramsköld, and Bergström, 1991
| |
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
- ^ S2CID 253839538. Retrieved 2 December 2022.
- ISBN 978-0231096546
- .
- .
- S2CID 237235251.
- PMID 35620450.