Corynexochida

Oryctocarella duyunensis

Order Corynexochida / Suborder Corynexochina / Family Oryctocephalidae / Family Oryctocarinae

Cambrian, Series 2, Stage 3 to Stage 4Hunan, Guizhou; Greenland
Oryctocarella duyunensis — photo 1
Photo 1 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 2
Photo 2 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 3
Photo 3 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 4
Photo 4 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 5
Photo 5 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 6
Photo 6 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 7
Photo 7 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 8
Photo 8 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 9
Photo 9 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Oryctocarella duyunensis — photo 10
Photo 10 · Type specimen (Guizhou; Reconstruction (Peng et al., Figured specimens (left: Hunan; right: Guizhou; Peng et al., 2017) Qian Yiyuan 1961) 2017) Complete dorsal shield (Hunan; Complete dorsal shield Jixian Laodeng) (Hunan; Baishui)
Classification
Order Corynexochida / Suborder Corynexochina / Family Oryctocephalidae / Family Oryctocarinae
Genus
Oryctocarella Tomashpolskaya & Karpinski, 1961
Genus author
Tomashpolskaya V. D. & Karpinski R. B.
Genus etymology
orycto-, Greek, digging; car, Greek, crown of the head; ella, diminutive adjectival suffix
Species
O. duyunensis (Chien, 1961)
Species author
Qian Yiyuan
Species etymology
Duyun, type specimenstype locality
Age
Cambrian, Series 2, Stage 3 to Stage 4
Distribution
Hunan, Guizhou; Greenland
Synonyms
Arthricocephalus duyunensis; Arthricocephalus granulus; Arthricocephalus jiangkouensis Arthricocephalus(Arthricocephalites)granulus; Arthricocephalus horridus Ocephalus
Diagnosis
Micropygous trilobite, dorsal shield oval, densely covered with nodes or smooth. Cephalon semicircular; Glabella cylindrical; Four pairs of pit-like glabellar furrows, S1-S3 connected by shallow furrows, but none reaching the dorsal furrow; Dorsal furrow distinct; Fixed cheek extremely broad; Free cheek narrow, without genal spine; Eye ridge distinct; Palpebral lobe of moderate size. Thorax of 11 segments (possibly 12), axis about half as wide as the pleural region; pleural ribs rather broad, pleural furrows near the upper edge of the ribs, bluntly rounded terminally. Pygidium rather small, about twice as wide as long, without border, medially embayed.