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-146- setatanangleof60to!lOdegrees. Th"amor;>hognathHomhas an arched poster-iorproce,.,. and a straight lateral process s"t at an obtus~ ..ngl.. of liD to no d"gree'l. The anterior process is shoTt ..nd curved Into a plane nearly perp~ndlcuLn tu tit", plane of the long. slightly sinuo". and laterally flared poster-iorprocess. The laceralpr"c"s" Is strafl'htandl"'sltuatedanterinr (1'i0 10 160 degr"u) to the posterior procu.... Th"basal cavity continues along all three processes. It 19 narrow In th.. anterior and the {aterlll process"s and broadly {hred b"neath the pOSterior ~>roc"ss. The f .. lodlfo.... has a robust and generally long base thatexhlbits a 'Itrong outer-lateral f1ar... nu. cusp Is later; and slelllier prodlned cusps and long "trail\ht posterior process"s with n:"'-llnifornly sl~ed dentlcles. n,e tr;chnnodelliforlnS have sYnll"-trieal denlicul3t.. laleralprocesAes thatorallyd;vergeata""ngleof IOtol5deg..eesand which are lat"r"lly sel at an angle of 20 to 25 degrees wi th th.. pO~l"rlor I'ro"e~... The belOdHorlM have a sharp-edge,d and undent lculated antertorprocess that enc1os"s anangl"'o( 35 to 1,5 deRreeswith theposterlorproce,,,•. Thet"'lraprion1odtformsh"veananterlnrd"nllculaled ..ndl...olateral dent;culatedprocess"s, 1o',e"vl"",eddO\ffl the cusp. the lateralprocesses3r"set3tanan/ll"o(about 135 degrees. Laterally, the anterior a"d posterior processes m.ake an angle n(about 30 del! rees and the outer-lateral and the pMterlor processes ""'ke 3n "nglc·of .about
----- ,_141_ ~ Theambalodifonosofthell,prevarhblliSapparatusare apparatUS, e:onsequently, fornsrepresentatl"eof this evolutionary tOsteriors1deofth" lateral process.l'\CreadvancC:dfo""salsodevelOPledge5alOngCheantt,rinredgenf tne lateral prncess and alollg the anterlor edge of the anteriut protea", During the ~hort ttme span of the evolutionary boundary bel"ecn eh,. tWO species it is difficult to set apart "n amnalodiform which repre~ v"riablli" Iran- sition are herein c:aH"d Baltoniodtl1l pre",ulahil iS - B , to split the sped"", This "ad"biU~'y ",as alsO not"d herein .HId ""5 fur- "",extre"",lyvaICiablenatur"oflheprioniodifor..,,,,,,,,sttr,,t not"dby Bergstrom (962), &"dat th%t dmehefelt il might be I'ossibl
Page 3 and 4:
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
Page 13 and 14:
. -'~-'_-.:~~.;,.. ·, I Page Perio
Page 15 and 16:
__ 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
Page 34 and 35:
-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
Page 64 and 65:
7.1 Composltionand Growth. Conodont
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continuous syrr:netrlcal-asyremctrl
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1914), to a ..ell founded dl~,"{sul
Page 70 and 71:
-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
Page 81 and 82:
-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
Page 97 and 98:
~. 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
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!.!.Fcv...££.1..!!. A, Rhodesogna
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Th" apparatus shows a simple sy=etr
Page 109 and 110:
." appa~at"s represent non-dellt.lc
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-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 156 and 157: paralleillith thelnncr-DIIrglnaLrld
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 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~
Page 206 and 207: ~._'- "'" specimens x52. Sample num
Page 208 and 209: PLATE 4
Page 210 and 211: PLATE 5
Page 212 and 213: 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
Page 220 and 221:
PLATE 9
Page 222 and 223:
PLATE lO
Page 224 and 225:
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
Page 232 and 233:
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
Page 258 and 259:
, r _. .--=- E SECTION COBBS A:~ ~E
Page 260 and 261:
Pseudobelodlna n.•p. A b.lodellif
Page 262 and 263:
I • 2 , I • 2 6 5 2 " .. " I I
Page 264 and 265:
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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