原文Introduction: typically very spinose and densely sculptured trilobites. ) t) c% E1 G3 ]; b- @Cephalon: convex; glabella tapering forward or subparallel, extending to anterior margin or nearly so, less complex lobation than in Lichoidea; eye ridges run from anterior end of glabella to palpebral lobe; opisthoparian sutures, often placed on sutural ridges; distinct notch in margin of free cheek adjacent to where anterior sutures cut cephalic margin; facial sutures secondarily lost in some genera; short genal spines typically present. 8 Q1 i3 g7 v9 A- g7 _6 r9 kThorax: 8 – 10 segments; tips of each bear 2 – 3 pairs of spines (anterior pair often difficult to see, ventrally directed); often with symmetrical row arrangements of pleural spines or tubercles. ) t6 ], p. q6 m2 m
Pygidium: micropygous, short, transverse, with 2 – 3 axial rings (3rd often faint), one or more pairs of tubular border spines, the largest of which connected to first axial ring by prominent ridge.
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大概意思是8 - 10的每一段;2 - 3双棘 外骨骼非常多刺 & t1 f* w/ L4 L) g* t7 J( ^9 ?$ f 1 E! k2 d( }" a4 S. o : c8 X1 ]% N; d, a/ x/ y ) }" D2 {8 a! r; o, D' Bpygidium micropygous transverse,bearing one or more pairs of spines,larges of which connected to first axial ring via porminent ridge 这句的大概意思是小尾板横向、轴承的一个或多个双棘,具有轴环然后连接到通过的背脊上。 翻译错了帮忙改正