原文Introduction: typically very spinose and densely sculptured trilobites. ) C& r4 ]9 J0 O8 S# ?6 j) G
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. 4 c; c0 F) W, E4 L
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. # Z' _, ]. @0 i3 M4 ?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.
, A$ T# g% B- ~; v- ]- L3 c" [2 n. }
; Q) d) ]& }, V. c8 d
+ V0 l. k) `1 W' X! k. L
大概意思是8 - 10的每一段;2 - 3双棘 外骨骼非常多刺 + M; W4 H" u R1 }. X $ J! c/ R3 E8 C, P0 A $ A9 w5 P4 c z$ D$ ?5 e2 ]% f( P4 p
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2 N0 f [$ |6 V, _. |8 W
厉害
