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paralleillith thelnncr-DIIrglnaLrldge. The central rldg.. carrte" 10 to ISnode-likedentlcle... ~ R".... rlu;. TI,,,S" platforms have rhe outstanding characteristics of the platforms from the P,serrusapparlltu", but in the 11Itter ca,Se the ....rginal rOilS of the platforms bur node-like dentlcles. the marginal rows of~n.sp.Aarenc·n-denticulated. It Is not cl",a[ whethf!'t or not the rf!'malnder of the "pp"r"tus Of~n.Bp.Alstrn.s.~"'eorslllltlattotheap;>aratusofp.serru's and P. '"-n!lerinus. ~ n. sp. A lias found in auodalion w1th ~h~...nts ofP.an~erlnus,butonlytheplatfonllele ....ntsweredistinctfro.. ~ serlnus. Genus RHOOES?GNATHUS S"q;sLnJm and Sweet, ~.lunbaloduselc8ansRhodes,1953 KHODt:SO(;NATHUS lip. d. R. ELf-GANS POI.ONICUS DzilL. Fig. 2M D.>scrlption. Only o~e complete specimen of this species .."s rccov~ credo It has four prace""e", three of IIhich divergp from the ~usp. Tlo,' shorpanl"r1orandposterioredgesofthe 8hore androbustc"spof this ele"""nt dcvclopSlntone
three procuses, It Is sunllOunted by sharp confluent dentlcles. ca"ity contln,,"S under all four proc"ss"s aa" broad open cavHy. Incollpletc apparHUS that Is assIgned lO Rhod"sosnath\lS because ot the "nuaual Md appsrent.fy cha",ct"rhtlc nature' of the ambal.,dlfo"" of lhe ( genus. neaurfaceof the descrlbedel"...,nt doeS not bear the dIstinct!"" pattern of ,dnut", clo,."ly spaced pHs. charednlnQuestlon. ttle genus Rhodesognathua Is placed ...ithln Balogn"-thlda~ following Lindstrom (1970). ~.3spec1"",n5. h ..tty PRIONIODOH!Ill\r: (Hassler, 1925) Dlscu•..ton. LindstrOIl(1970) Incorponted",lthln lhis fallily the Pr""louSly,lIerg.tron(19b8).tladrellardedthefor.. al'ecles Gothodus co.aul,Hu", Lindstrom a.r.
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The quehly 01 Itl,smitfohcheis heav
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FRONTISPIECE View south-west over C
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dlyislbl~ Into twO 5p~cl~5 ,assoc!n
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Page. l.ithostratigraphy CottlU Isl
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· ~----~_. Suped;l!l,ily Panderodo
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. -'~-'_-.:~~.;,.. ·, I Page Perio
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__ 14. Scanning electron .,icros"op
Page 17 and 18:
Pag~ 29. ~na S~nUa (D,l\:;), B·~lO
Page 19:
I. I Acl
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underBtandlng of the gttuctur~l com
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'2.1 Collecttonof Sam.ple". The ort
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J ,- GEOLOC'CAI.SETTING Th... field
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..v"rY"herebYt"eUPI'"roroJ"vib~~lan
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hy "bout )00 "",t n3 uf t,,,,.ic la
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th~, roughly l,aralld til" oril\iru
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-16- Figure 3. View eastward of the
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4.2.2Squ!dCov.. S"nion. On th.. sou
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WJfI -,"- ~ --. ~._- ~'.':.':'::'''
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1111(11 ",~v" kln~flc ",wrllY rele~
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~. Sedillento\ngy of tn"CobbsAnlsec
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~~,.- ~.=- ~ .•.- ~_D' ~~'O ~:::'
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4.3 Sedl,.''',tology of the ColJbs
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Quarry Cove section. but contains A
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-32- ....aterneH_shorevolcanlcsands
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PALf.ONTOLOCYAND PALEOr.COLOGYOj'TH
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to b~ h.rgeLy restrlCfprl to .,qu~t
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Ii i I; America, it is not surprisi
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OfIlO!'lOSTlUTICRAPIlY OF TlIE COBB
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~------~ previously thought. The se
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7.1 Composltionand Growth. Conodont
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continuous syrr:netrlcal-asyremctrl
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1914), to a ..ell founded dl~,"{sul
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-Or FI,~ , \A,,~j "1,, ~
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Plate 16 ~I"es " part tal vle'o' of
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Ta"onoalcal clli"slflcatlon of the:
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I.'~ll{~er (19M), not"d the pr~s>
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or th" r"pon"d IIp,,cie~ of interes
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-61- chacacl",risticS, g. OlI"otod"
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,'. !J..~"J..£..1l. A-T, lh,.tacod
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! i. · t;!:;::~~::g~~1~m::l~~:;;:i
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i. I spedes 1s very llillllhr. One
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DZIK1916,p. 435,F1g. 184-f. Descrtp
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latest Tremadocian. Previously (Lin
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, _1 _ Th"r" 1s a slngle posterior
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• Ftgllre 25. A~H. Drepanodlls sp
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~. Connd01Hs ~f .,thh 'p"cies have
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a furrow. Asy""",nlcal fonns have a
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-83- ./ ~I~ ----- ------J~"
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tlp of th.. ~u~p. The oul'H lateral
Page 105 and 106: !.!.Fcv...££.1..!!. A, Rhodesogna
Page 107 and 108: Th" apparatus shows a simple sy=etr
Page 109 and 110: ." appa~at"s represent non-dellt.lc
Page 111 and 112: -9)- ETIII~GTO~ 1959. p. 284. p\. 3
Page 113 and 114: -95- ,\... r,~.]))'! ~! ~ ~ . ...;
Page 115 and 116: I The nearly sY1ll!lletricai gr"cli
Page 117 and 118: -99- / 4((Lf~~O~~, ~"''''{(A))~~~ "
Page 119 and 120: conodont "ith a rouod"d anterior m>
Page 121 and 122: J,I, ~~'1~~,-J;; A-f., :k", l;cl1"~
Page 123: allterlor ll'.arll.ins and deep [r[
Page 126 and 127: - •• ]...."'H ,wilr th~ "nf~rl,
Page 128 and 129: -110- ./ t~{;~l.t..· Wall1serodus
Page 130 and 131: I ,. ~s a~YL'"""trieal m"ltiCo~tale
Page 132 and 133: ....~y""""'trical blcostate drepana
Page 134 and 135: symm... try transition compf!slng f
Page 136 and 137: "itionlo~'!i!.,butappearstohav"d~sc
Page 138 and 139: - allledorlyon al least OlLe of the
Page 140 and 141: I The latter [OTlIlis similar to [o
Page 142 and 143: a.e c~~uct"rh:"d by asyll\ll>Ctrlca
Page 144 and 145: Genus EOPLACOGNAfHUS HOIII
Page 146 and 147: 1. . procen develops from the cusp
Page 148 and 149: to fO TIIl the dent;c"l.oted proces
Page 150 and 151: pcri.~,eter 0' the anrerlr proce99
Page 152 and 153: ----- 1"-.-~- . ,-.,:ir4~~~.... ,.
Page 154 and 155: ut sh"llowly ncavated. The roof of
Page 158 and 159: -------- a 81Ibg"n"s of Pdoniodu!I.
Page 160 and 161: -142- ~ b·J ~ ~~~~ ffi? Q ~& jJ)]
Page 162 and 163: ~.48speci_ns. Genus BALroNIOOUS LIn
Page 164 and 165: -146- setatanangleof60to!lOdegrees.
Page 166 and 167: B,t,LTONIOOOS VARIAllILIS (!!ergstr
Page 168 and 169: llgonodlnifom-prlonlodlnlfo... serl
Page 170 and 171: -152 / b~. ~~ ~ Figure 41. A-E,G,
Page 172 and 173: ·10n&,th....nt... rior ...&In of
Page 174 and 175: falOdlfortn6: l1gonodinUur1llS ~nd
Page 176 and 177: ] lINDSTIlOM 19nb. p. 109. p1. 22,
Page 178 and 179: - -160- of[h"-baSe,andfo~lhlsrea90n
Page 180 and 181: ~. HAMAR 1964, ~. 2b3, 1'1. I, OK"
Page 182 and 183: ore ouu,ard. 'I ) M.¥tedal. 18pec1
Page 184 and 185: Bassler, R.S., ln~. Classlfication
Page 186 and 187: Bryant, W.L., 1921. The Genesee con
Page 188 and 189: -170:' . H....r, C., 1964. The Kldd
Page 190 and 191: Lane, F.W., 1960. KingdOOl of the O
Page 192 and 193: Morrill, S.C., .976. A ne" Cambrian
Page 194 and 195: " SChlllldt, 11.,1933. Cephlllopode
Page 196 and 197: T>I"nhofel, IoI,H:: 1947. nw Siluri
Page 198 and 199: Wolska, t .• 1961. ~onodontY 1. O
Page 200 and 201: All sped,.."" X4~. SalOp Ie nu..ber
Page 202 and 203: I All sped;"en" X:iO. Sample numlj,
Page 204 and 205: .. All 8p~
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~._'- "'" specimens x52. Sample num
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PLATE 4
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PLATE 5
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13
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p,!ven in pa~enthes,-s. ) 2. 1'"He~
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PLATE 7
Page 218 and 219:
PLATE 8
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PLATE 9
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PLATE lO
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PLATE II
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vt~~ WU~~ ~ ~ --,'• ., #:.. =' PL
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l~, lateral .... 1c.... "f ~YIf\lTl
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~"'''l' l~ numb.. ". f rofll ",h I
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PLATE 14
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1 I'" OUl"~ Ia"'~al vie... 01 hadJl
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.-.~, given in parentheses. Figur..
Page 238 and 239:
PLATE 16
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~n
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, Figure A!. A limestone lense (out
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Photo..tc~ographs of so"", ()f the
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Figure B3. Sediment deposited in an
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ILLINGATE ISLANDS l USHES BIGHT . R
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FIGURE 2 CONODONT SAMPLE LOCALITIES
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OoJQrr~ Co~e S~ChO" CobbS Arm Sect,
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TABLE Ib r C;nQ~i"" frnm ·thQ C':n
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, r _. .--=- E SECTION COBBS A:~ ~E
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Pseudobelodlna n.•p. A b.lodellif
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I • 2 , I • 2 6 5 2 " .. " I I
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TABLE 10 Con'odont Snlldll~ from. t
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I-'__...,...~ I;~ DVE SECTION ~OBBS
Page 268 and 269:
It,a.·~~it ombolodif ,m' Stlodtlla
Page 270 and 271:
4 4 I I 12 • I 2 , I I 10 • I \
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