Phillipsiidae is a family of
proetid trilobite
Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the ...
s, the various genera of which comprise some of the last of the trilobites, with a range that extended from the
Kinderhookian
The Mississippian ( , also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earlier of two subperiods of the Carboniferous period lasting from roughly ...
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 251.902 ...
age at
Permian-Triassic extinction event in the latest
Permian
The Permian ( ) is a geologic period and 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 251.9 Mya. It is the last period of the Paleo ...
period.
Phillipsiidae is sometimes defined as a subfamily, "Phillipsiinae," and usually placed within the family
Proetidae
Proetidae is a family of 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 subfamily of Proetidae, ...
. Jell & Adrain (2003) went so far as to lump Phillipsiidae into the family
Proetidae
Proetidae is a family of 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 subfamily of Proetidae, ...
, 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 order of trilobite to go extinct, finally dying out in the Permian-Triassic extinction event.
Description
These typically small trilobites resem ...
.
Subfamilies
The following genera are included, divided among six subfamilies:
*''
Phillipsia'' (
type genus
In biological taxonomy, the type genus 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-bearing type of a nominal ...
)
*''
Breviphillipsia''
*''
Comptonaspis''
*''
Griffithidella''
*''
Hesslerides''
*''
Kollarcephalus''
*''
Nunnaspis''
*''
Phillibole''
*''
Piltonia''
Subfamily Archegoninae
*''
Archegonus''
*''
Hildaphillipsia''
Subfamily Bollandiinae
*''
Bollandia''
*''
Kathwaia''
*''
Neoproetus''
Subfamily Cummingellinae
*''
Bedicella''
*''
Cummingella''
*''
Paraphillipsia''
*''
Persia
Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...
''
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
''Nipponaspis'' is a genus of proetid trilobite belonging to the family Phillipsiidae. Fossils of the various species are found in Middle Permian-aged marine strata of Fukushima Prefecture, Japan, China, Korea, and Alaska
Alaska ( ; ...
''
*''
Weania''
References
*Bresinski, David K 2000. Lower Mississippian Trilobites from Southern New Mexico. Jour. Paleontology V74(6), 1043-1965
Phillipsiidae - Paleodb9/2/11
Proetida
Carboniferous trilobites
Permian trilobites
Mississippian first appearances
Guadalupian extinctions
Prehistoric arthropod families
Trilobite families
{{Carboniferous-animal-stub