Corynexochida

Stephanocare richthofeni

Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Damesellidae / Subfamily Damesellinae

Guzhangian (Miaolingian, Cambrian)Shandong, Northeast China and other parts of North China
Stephanocare richthofeni — photo 1
Photo 1 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 2
Photo 2 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 3
Photo 3 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 4
Photo 4 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 5
Photo 5 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 6
Photo 6 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 7
Photo 7 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 8
Photo 8 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Stephanocare richthofeni — photo 9
Photo 9 · Early literature specimen (Lu Yanhao et al. 1965) Thoracic segment specimen (Shandong; Yadong (Shandong; Toutie) Complete dorsal exoskeleton (Shandong; Teacher Shao) Enrolled dorsal exoskeleton with cephalic and pygidial spines Enrolled specimen (Shandong; Enrolled specimen (Shandong; perfectly interlocked (Shandong; Yimeng Shanren) Yumu) Baishui)
Classification
Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Damesellidae / Subfamily Damesellinae
Genus
Stephanocare Monke, 1903
Genus author
Monke H.
Genus etymology
stephan, Greek, crown; car, Greek, crown of the head
Species
S. richthofeni Monke, 1903
Species author
Monke H.
Species etymology
Ferdinand von Richthofen, German geographer and geologist, one of the pioneers of modern geological research in China
Age
Guzhangian (Miaolingian, Cambrian)
Distribution
Shandong, Northeast China and other parts of North China
Synonyms
Damesella chione; Olenoides richthofeni
Diagnosis
Dorsal shield elongate-elliptical, covered with tubercles. Cephalon relatively wide; anterior margin of cranidium bearing a row of serrate denticles, posterior margin also with short spines; glabella trapezoidal with flatly rounded front and three pairs of glabellar furrows; occipital furrow deepened laterally; occipital ring arched backward; eyes large, kidney-shaped, slightly behind the middle of the cranidium; eye ridges almost invisible; librigenae wide with medium-length genal spines; a small spine present between the intergenal angle and the genal spine; Thorax of 12 segments; axis narrowing posteriorly, large axial spines reducing from 4 to 2; pleurae with pleural furrows, a pleural spine developed at one-third of the pleural width from the axis, disappearing posteriorly. Pygidium semicircular; axis of 5 rings, inverted-conical; with 6 pairs of small marginal spines.