| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Porachistrum
Taxonomy
Achistrum (Porachistrum) was named by Beckmann (1965). It is not extant. It is considered to be a form taxon.
It was considered an invalid subgroup of Achistrum by Gilliland (1992); it was reranked as Porachistrum by Sepkoski (2002).
It was assigned to Achistrum by Beckmann (1965); and to Apodida by Sepkoski (2002).
It was considered an invalid subgroup of Achistrum by Gilliland (1992); it was reranked as Porachistrum by Sepkoski (2002).
It was assigned to Achistrum by Beckmann (1965); and to Apodida by Sepkoski (2002).
Synonymy list
Is something missing? Join the Paleobiology Database and enter the data
|
|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Porachistrum Beckmann 1965
show all | hide all
Diagnosis
No diagnoses are available