Corynexochida

Teinistion typicalis

Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Dorypygellidae

Guzhangian (Miaolingian, Cambrian)Shandong, Liaoning
Teinistion typicalis — photo 1
Photo 1 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 2
Photo 2 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 3
Photo 3 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 4
Photo 4 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 5
Photo 5 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 6
Photo 6 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 7
Photo 7 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 8
Photo 8 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 9
Photo 9 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Teinistion typicalis — photo 10
Photo 10 · Limestone specimen Type specimen figures (Shandong; Zhang et al. Literature specimen (Walcott 1987) 1913) (Shandong; Baishui) Complete dorsal Nearly complete dorsal exoskeleton Complete dorsal exoskeleton exoskeleton and probable (Shandong; Jiangbei Yumin) (Shandong; Guodong) exuvia (Shandong; Liangliang Fengqing) Complete dorsal exoskeleton Enrolled specimen (Shandong; Complete dorsal exoskeleton (Shandong; Dakai) Liangliang Fengqing) (Shandong; Edwin)
Classification
Order Corynexochida / Suborder Leiostegiina / Superfamily Dameselloidea / Family Dorypygellidae
Genus
Teinistion Monke, 1903
Genus author
Monke H.
Genus etymology
tein-, Greek, to stretch
Species
T. typicalis (Walcott, 1905)
Species author
Walcott C. D.
Species etymology
typical, standard, typical
Age
Guzhangian (Miaolingian, Cambrian)
Distribution
Shandong, Liaoning
Synonyms
Dorypygella typicalis; Dorypygella alcon; Teinistion alcon
Diagnosis
Cephalon transversely semicircular; cranidium subsquare; anterior border straight and convex; glabella truncate-conical with 3 pairs of short glabellar furrows, a pair of lateral lobes at the glabellar base; dorsal furrows deep; occipital furrow narrow and shallow; eye ridges distinct; palpebral lobes rather large; fixigenae relatively narrow; librigenae rhomboid with a narrow border, genal spines sharp, medium-length. Thorax of 11 segments; pleurae rather narrow, pleural furrows narrow and deep, pleural spines rather short. Pygidium transversely semicircular; axis short and convex; border narrow and flat; first pleural ring extending outward into a large pair of pygidial spines, between which are 4-5 pairs of serrate short spines.