原文Introduction: typically very spinose and densely sculptured trilobites. $ t) ]: S, Z4 z! `& U6 y) SCephalon: 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. 7 v2 M. V& A( T* L$ @7 b! i0 E; sThorax: 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. 7 X' l I) ?% [" h% X: p
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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3 e: d8 R9 r0 B: {/ x/ f 4 J9 E, L7 I5 L0 U3 B; v2 v) @$ K大概意思是8 - 10的每一段;2 - 3双棘 外骨骼非常多刺" i+ J6 n! Q" x2 o$ Z& o$ z
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% {) D8 \- y- o# [ K! ] ! l) ]- r. S2 O/ v6 Mpygidium 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
狗仔卡
发表于 2010-8-13 21:05:23
提升卡
置顶卡
沉默卡
喧嚣卡
变色卡
抢沙发
千斤顶
显身卡
这里有一些Odontopleuroidea的代表
, F- S* J1 r! b2 P( e, D
厉害
