| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Amecephalus
Taxonomy
Amecephalus was named by Walcott (1924) [Sepkoski's age data: Cm Tojo-u Cm mMid-u Sepkoski's reference number: 81]. It is not extant. Its type is Ptychoparia piochensis.
It was synonymized subjectively with Alokistocare by Palmer (1954), Palmer and Halley (1979).
It was assigned to Ptychopariidae by Matthew (1887); to Olenidae by Mason (1935); to Ptychopariacea by Sundberg and McCollum (2000); to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2002), Sundberg (2018).
It was synonymized subjectively with Alokistocare by Palmer (1954), Palmer and Halley (1979).
It was assigned to Ptychopariidae by Matthew (1887); to Olenidae by Mason (1935); to Ptychopariacea by Sundberg and McCollum (2000); to Ptychopariida by Sepkoski (2002); and to Alokistocaridae by Jell and Adrain (2002), Sundberg (2018).