Tetragraptidae Explained

Tetragraptidae is an extinct family of graptolites from the Floian to Darriwilian epochs of the Ordovician Period.^[1]

Genera

List of genera from Maletz (2014):^[2]

• †Corymbograptus Obut & Sobolevskaya, 1964
• †Paratetragraptus Obut, 1957
• †Pendeograptus Bouček & Přibyl, 1951
• †Phyllograptus Hall, 1858
• †Pseudophyllograptus Cooper & Fortey, 1982
• †Pseudotrigonograptus Mu & Lee, 1958
• †Tetragraptus Salter, 1863
• †Tristichograptus Jackson & Bulman, 1970

Notes and References

1. Book: Maletz, Jörg. Graptolite Paleobiology. 2017. Wiley-Blackwell. 9781118515617.
2. Maletz . Jörg. The classification of the Pterobranchia (Cephalodiscida and Graptolithina) . Bulletin of Geosciences . 2014 . 89 . 3 . 477–540 . 10.3140/bull.geosci.1465 . 1214-1119. free .