原文Introduction: typically very spinose and densely sculptured trilobites. $ }& E, D5 x' E, M& }" A: ZCephalon: 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 `4 k1 j6 V, ^7 f, o/ h U3 f
Thorax: 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. 0 ]* g. l4 s: k6 ^! TPygidium: 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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: t# w8 E1 }/ H " H6 @7 S2 j. M- z, l% D大概意思是8 - 10的每一段;2 - 3双棘 外骨骼非常多刺( ]' D+ Q2 r$ ~% M) S/ t0 S6 i: T
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pygidium 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& b) D5 i" L8 G7 J0 o9 `; u) e
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厉害
