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NEW YORK STATE MUSEUM
Figure 2 Diagram of an Eurypterid
a; Ia-VIa = appendages or legs | o = "larval" median eyes or ocelli |
Ab = abdomen | om = ocellar mound |
bl = balancing leg | on = ocular node |
ca = carapace or head shield | op = operculum or first sternite |
car = carina or telson | pa = palette |
Ce = cephalothorax or prosoma | Po = postabdomen or metasoma |
ch = cherlicerae, Ia, preoral appengdages or mandibles | pp = pentagonal pieces |
cj = coxa | Pr = preabdomen or mesosoma |
end = postoral appendages or endognathites | ps, I-VI = caudal or postabdominal segments |
ep = epimera or pleura of tergite | r = rim |
ga = genal angle | rh = rhachis |
gea = genital appendage (female) | s, II-V = sternites |
gl = glabella | sf = swimming leg |
gn = gnathobase | t = telson |
le = lateral or compound eyes | t, I-VI = tergites |
md = marginal doublure | ta = tubular organs |
me = metastoma or postoral plate | tl = triangular lobes |
mo = mouth | va = visual area |
mp = marginal plate on under side of cephalothorax | wl 1-3 = walking legs |