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previously thought. The se"tton~ could be reprellentatlve of dt fferent<br />
poctlons of the overall sed!lIIenutlnn tfKldel of rigut"" 11, and the composition<br />
of the conodont fa.una in anyone portion ,",ould refl..ct til.. phys~<br />
kill and che"'cal condttiona of that ""dilWnlJny ""vlconNOt.<br />
A Umestone LenS ... [tllln green tuffs along the shore beMath<br />
the Mgllc"n church Bouth",.."t of Herring Neck (HI" 2, Appendix Ill. 1 1 ,,1-<br />
ded ""vHal conodont spedes lndudlng t:oplacoRnac'hus robUB[U" (Table \a,<br />
lb; referred to 80S Back Cove S,\mple). ThU suggests an oge in close proxlmityrorh"lof<br />
the Cobbi ArnFor...atlon.<br />
Conodont" ..... rerecovered fro",cvoother linf:stone lenses: one<br />
In the Surran"rford Group volcanics near Til t Cove (Figs. 2, I~). yi"lded<br />
~ fe~ "l"l:Ients of Pygodus ansHl"M~. and one frorl th~ SUlIPerford Group<br />
volcanics of the Toogood S"q~ncc near Ne""illc (HI';. 2; Apl'endlJl A),<br />
;i<br />
teLdspeCI..enSOfEOPI3cosnathusrObustus.ThesetllosamPleS ,,150 5Ugt<br />
an age In close proxi"ity to that of th" Cobbs ~r.. ,'ormation.<br />
f>.2RegionaICorrelatlon •<br />
FroOlthe dlscussloMOf the pre"lous section, it.lsconcludcd<br />
that th.. r.onodont Zle"'foulldiand.<br />
In the absen"" of the ap?;H"nlecologlcal control on ..any of the conodont<br />
sp"des, the Cobbs Ar.. Fonurl"" se""''' to represent" lime period from<br />
theuppctpartof thePygod\JSSCrrusZon.. into the uPl"'t half of the<br />
,PY!jodus ansedl\U5 ZoM of lhelHddle Ordovidnl\ (Fig. 19). ThLs ..ould<br />
cunespond to n..arly all of lhe f!J:prograprus tet.. ruiscul,," graptollte<br />
Zone, al\d p.. rhaps the baae of th.. Ne .."graptuS sracilh Zone. Thls ...as
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