Extinct genus of crustaceans
Ceratiocaris is a genus of paleozoic phyllocarid crustaceans whose fossils are found in marine strata from the Upper Ordovician until the genus' extinction during the Silurian . They are typified by eight short thoracic segments , seven longer abdominal somites and an elongated pretelson somite. Their carapace is slightly oval shaped; they have many ridges parallel to the ventral margin and possess a horn at the anterior end.[ 1] They are well known from the Silurian Eramosa formation of Ontario , Canada .[ 2] [ 3]
The following species are included:
Ceratiocaris bohemica Barrande, 1872
Ceratiocaris harpago Poschmann, Bergmann & Kühl, 2018
Ceratiocaris macroura Collette & Rudkin, 2010
Ceratiocaris monroei Salter in Murchison, 1859
Ceratiocaris murchisoni Jones & Woodward, 1888
Ceratiocaris papilio Salter in Murchison, 1859
Ceratiocaris pusilla Matthew, 1889
Ceratiocaris solenoides M'Coy, 1849
Ceratiocaris winneshiekensis Briggs et al. , 2016 [ 4]
References