Phillipsiidae is a family of
proetid trilobite
Trilobites (; meaning "three-lobed entities") are extinction, extinct marine arthropods that form the class (biology), class Trilobita. One of the earliest groups of arthropods to appear in the fossil record, trilobites were among the most succ ...
s, the various genera of which comprise some of the last of the trilobites, with a range that extended from the
Kinderhookian epoch of the Lower
Mississippian, to the end of
Changhsingian
In the geologic time scale, the Changhsingian or Changxingian is the latest age or uppermost stage of the Permian. It is also the upper or latest of two subdivisions of the Lopingian Epoch or Series. The Changhsingian lasted from to 251.9 Ma a ...
age at
Permian-Triassic extinction event in the latest
Permian
The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...
period.
Phillipsiidae is sometimes defined as a subfamily, "Phillipsiinae," and usually placed within the family
Proetidae
Proetidae is a family (biology), family of Proetida, proetid trilobites. The first species appeared in the Upper Ordovician, and the last genera survived until the Middle Permian. However, if the closely related family Phillipsiidae is actually a ...
. Jell & Adrain (2003) went so far as to lump Phillipsiidae into the family
Proetidae
Proetidae is a family (biology), family of Proetida, proetid trilobites. The first species appeared in the Upper Ordovician, and the last genera survived until the Middle Permian. However, if the closely related family Phillipsiidae is actually a ...
, however other workers since like Lerosey-Aubril and Feist (2005) have continued to recognize Phillipsiidae as a distinct and separate family within
Proetida
Proetida is an order of trilobite that lived from the Ordovician to the Permian. It was the last surviving order of trilobite, dying out in the Permian-Triassic extinction event.
Description
These typically small trilobites resemble those of ...
.
Subfamilies
The following genera are included, divided among six subfamilies:
* No subfamily
**''
Phillipsia'' (
type genus
In biological taxonomy, the type genus (''genus typica'') is the genus which defines a biological family and the root of the family name.
Zoological nomenclature
According to the International Code of Zoological Nomenclature, "The name-bearin ...
)
**''
Breviphillipsia''
**''
Comptonaspis''
**''
Griffithidella''
**''
Hesslerides''
**''
Kollarcephalus''
**''
Nunnaspis''
**''
Phillibole''
**''
Piltonia''
*Subfamily
Archegoninae
**''
Archegonus''
**''
Hildaphillipsia''
*Subfamily
Bollandiinae
**''
Bollandia''
**''
Kathwaia''
**''
Neoproetus''
*Subfamily
Cummingellinae
**''
Bedicella''
**''
Cummingella''
**''
Paraphillipsia''
**''
Persiax''
*Subfamily
Cyrtosymbolinae
**''
Carbonocoryphe''
**''
Cyrtosymbole''
*Subfamily
Ditomopyginae
**''
Acanthophillipsia''
**''
Acropyge''
**''
Ameropiltonia''
**''
Ameura''
**''
Ampulliglabella''
**''
Australokaskia''
**''
Anisopyge''
**''
Delaria''
**''
Ditomopyge''
**''
Hentigia''
**''
Iranaspidion''
**''
Jimbokranion''
**''
Malchi''
**''
Microphillipsia''
**''
Novoameura''
**''
Planokaskia''
**''
Permoproetus''
**''
Pseudophillipsia''
**''
Simulopaladin''
**''
Timoraspis''
**''
Vidria''
*Subfamily
Thaiaspidinae
**''
Thaiaspis''
**''
Thigriffides''
*Subfamily
Weaniinae
**''
Doublatia''
**''
Endops''
**''
Nipponaspis''
**''
Weania''
References
Further reading
*Bresinski, David K 2000. Lower Mississippian Trilobites from Southern New Mexico. Jour. Paleontology V74(6), 1043-1965
External links
Phillipsiidae - Paleodb9/2/11
Mississippian first appearances
Trilobite families
Taxa described in 1886
{{proetida-stub