Cyphaspis

Cyphaspis is a genus of small trilobite that lived from the Late Ordovician to the Late Devonian. Fossils have been found in marine strata in what is now Europe, Africa and North America. Various species had a compact body, and a large, bulbous glabellum. Many species had long spines arranged similarly to closely related genera, such as Otarian, Otarionella, Chamaeleoaspis, and Namuropyge.

Cyphaspis Temporal range: Late Ordovician-Late Devonian PreꞒ Ꞓ O S D C P T J K Pg N
Cyphaspis sp. from Morocco
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	†Trilobita
Order:	†Proetida
Family:	†Aulacopleuridae
Genus:	†Cyphaspis Burmeister 1843
Type species
Phacops ceratophthalma Goldfuss 1843
Species
See text

Species

The following species in the genus Cyphaspis have been described:

• C. anticostiensis
• C. bellula
• C. bluhmi Van Viersen & Holland, 2016^[1]
• C. boninoi Van Viersen & Holland, 2016^[1]
• C. bowingensis
• C. buchbergeri Adrain & Chatterton, 1996^[2]
• C. burmeisteri
• C. ceratophthalma Goldfuss, 1843 (type)
• C. ceratophthalmoides
• C. clintoni
• C. coelebs
• C. convexa
• C. craspedota
• C. dereimsi
• C. diadema
• C. eximia Van Viersen & Holland, 2016^[1]
• C. foumzguidensis Van Viersen & Holland, 2016^[1]
• C. gaultieri
• C. globosus^[3]
• C. heisingi Van Viersen & Holland, 2016^[1]
• C. hoepfneri
• C. hudsonica
• C. hybrida
• C. hydrocephala
• C. ihmadii Van Viersen & Holland, 2016^[1]
• C. insolata Van Viersen, Taghon & Magrean, 2019^[4]
• C. iuxta Van Viersen, Taghon & Magrean, 2019^[4]
• C. juergenhollandi Van Viersen & Holland, 2016^[1]
• C. khraidensis Van Viersen & Holland, 2016^[1]
• C. kippingi Van Viersen & Holland, 2016^[1]
• C. koimeterionensis Van Viersen & Vanherle, 2018^[5]
• C. kweberi Van Viersen & Holland, 2016^[1]
• C. lerougei Van Viersen & Holland, 2016^[1]
• C. lowei Adrain & Chatterton, 1996^[2]
• C. mactavishi Adrain & Chatterton, 1996^[2]
• C. maharchensis Van Viersen & Holland, 2016^[1]
• C. matulina
• C. megalops
• C. minuscula
• C. munii Adrain & Chatterton, 1996^[2]
• C. partim
• C. parvula
• C. planifrons
• C. punctillosa
• C. raripustulosus
• C. sibirica Schmidt, 1886
• C. smeenki Van Viersen & Holland, 2016^[1]
• C. spinulocervix
• C. spryi
• C. stephanophora
• C. stigmatopthalmus
• C. tadachachtensis Van Viersen & Holland, 2016^[1]
• C. trentonensis
• C. trigoda
• C. walteri
• C. yassensis

Distribution

Fossils of Cyphaspis have been found in:^[3]

Devonian

Colombia (Floresta Formation, Altiplano Cundiboyacense), the Czech Republic, Morocco, United States (Alaska, Iowa, Oklahoma), and Uzbekistan

Silurian

Canada (Northwest Territories, Nunavut, Ontario), the United Kingdom, and the United States (Indiana, New York, Tennessee)

Ordovician

Sweden, and the United States (Illinois, Kentucky, Missouri)