Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Peiragraptinae
Taxonomy
Peiragraptinae was named by Jaanusson (1960). It is not extant.
It was assigned to Orthograptidae by Mitchell (1987).
It was assigned to Orthograptidae by Mitchell (1987).
Subtaxa
Synonymy list
Year | Name and author |
---|---|
1960 | Peiragraptinae Jaanusson |
1987 | Peiragraptinae Mitchell p. 381 |
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.
Subfm. †Peiragraptinae Jaanusson 1960
show all | hide all
Diagnosis
Reference | Diagnosis | |
---|---|---|
C. E. Mitchell 1987 | Orthograptids with Pattern G or Pattern F primordial astogeny; strongly geniculate
thecae bearing genicular spines or flanges or both; rhabdosome generally aseptate and with fully sclerotized periderm. |