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Proetida

Trilobita - Proetida

Taxonomy
Proetida was named by Fortey and Owens (1975).

It was assigned to Libristoma by Fortey (1990); and to Trilobita by Chatterton and Perry (1977), Sepkoski (2002) and Adrain (2011).

Subtaxa
Aceroproetus, Acetopeltis, Appendicysta, Aprathia, Ascopeltis, Aulacopleuroidea, Bailielloides, Bapingaspis, Bathyuridae, Bitumulina, Bolivicrania, Boliviproetus, Borealia, Calybole, Cammingella, Camsellia, Ceratoproetus, Chauffouraspis, Clavibole, Coignops, Constantina, Daihuaia, Dechenellurus, Devonocoryphe, Devonoproetus, Dimeropygidae (syn. Toernquistiidae), Dohmiella, Dudu, Eocyrtosymbole, Eoproetus, Erbenicoryphe, Eudechenella, Evagena, Formonia, Frithjofia, Ganinella, Gapeevella, Gitarra, Gracemerea, Hanjiangaspis, Helioproetoides, Hexianella, Huanoproetus, Humeia, Humilogriffithides, Hypaproetus, Karginella, Kegeliella, Khalfinella, Kinderlania, Kolymoproetus, Kulmiella, Langgonbole, Linguaproetus, Lophiokephalion, Mahaiella, Merebolina, Monodechella, Moravocoryphe, Niachangella, Oehlertia, Oidalaproetus, Pachyproetus, Palaeophillipsia, Panarchaegonus, Parachaunoproetus, Paradechenella, Parafrithjofia, Paragriffithides, Parapalebralia, Parawarburgella, Particeps, Paryfenus, Perakaspis, Perliproetus, Phaselops, Phyllaspis, Platyantyx, Pontipalpebralia, Prodiacoryphe, Proetidae, Proetocephalus, Proetoidea, Pseudogerastos, Pterocoryphe, Pulcherproetus, Pusillaboles, Quyuania, Radonia, Richteraspis, Schizophillipsia, Sinobole, Skemmatocare, Sperginaspis, Tayanaella, Tcherkesovia, Tekinia, Telephinidae, Thalabaria, Tropidocoryphidae, Tschernyschewiella, Vandergrachtia, Vitaella, Wagnerispina, Waideggula, Weberiphillipsia, Xenoboloides, Xenodechenella, Xiangzhongella, Yanshanaspis, Yichangaspis, Zhegangula

View classification of included taxa

Synonymy list
YearName and author
1975Proetida Fortey and Owens
1977Proetida Chatterton and Perry p. 777
1990Proetida Fortey p. 558
2002Proetida Sepkoski, Jr.
2011Proetida Adrain p. 106

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
RankNameAuthor
phylumArthropodaLatreille 1829
subphylumMandibulata
classTrilobitaWalch 1771
orderProetidaFortey and Owens 1975
orderProetidaFortey and Owens 1975

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.

Diagnosis
ReferenceDiagnosis
R. A. Fortey 1990Libristoma having fusiform glabella in the protaspis stage, and natant hypostomal condition attained early in ontogeny. Larval hypostome margin lacking spines. Most species natant also in adult; some secondarily conterminant or impendent. Median occipital tubercle usually present.