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Journal of Paleontology

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Journal of Paleontology 2002;76:211-228.
LINGULATE BRACHIOPODS FROM THE CAMBRIAN-ORDOVICIAN BOUNDARY BEDS OF UTAH
LEONID E. POPOV, LARS E. HOLMER, and JAMES F. MILLER
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FIGURE4—1–11,Lingulella? incurvata new species Notch Peak Formation, Lava Dam Member, Fryxellodontus inornatus Conodont Subzone, sample LD195 (5); House Limestone, Barn Canyon Member, Cordylodus lindstromi s.l. Conodont Zone, sample H424 (1, 2, 3, 4, 6, 10, 11); House Limestone, Barn Canyon Member, Cordylodus angulatus Zone, sample H498 (7, 8); 1, 2, USNM 516723, ventral valve exterior, x42, lateral view of 1, x44; 3, 4, USNM 516724, ventral valve exterior, x29, oblique lateral view, x32; 5, USNM 516725, dorsal valve exterior, x31; 6, USNM 516726, dorsal valve interior, x38; 7, 8, Holotype, USNM 516727, dorsal valve interior, x27, oblique lateral view, x31; 9, USNM 516728, dorsal valve interior, x30; 10, 11, USNM 516729, oblique lateral view of ventral valve interior, x22, detail of ventral pseudointerarea, x54. 12–17,Wahwahlingula antiquissima (Jeremejew, 1856) Upper Cambrian, upper Cordylodus proavus Biozone, Tosna Formation, Syas River south of Rebrovo village, north-western Russia; 12, CNIGR 182/12348, ventral valve interior, x11; 13, CNIGR 12348, dorsal valve interior, x10; 14, Neotype, CNIGR 180/12348, ventral valve exterior, x3; 15, 16, GLAHM 101691, exterior of fragmentary valve, showing pitted ornamentation with pitted ornamentation, x500, details of pits, x800 (see also Cusack et al. 1999, pl. 1); 17–27,Wahwahlingula sp. Notch Peak Formation, Lava Dam Member, Cambrooistodus minutus Conodont Subzone, sample LD156 (22–27); House Limestone, Barn Canyon Member, Cordylodus lindstromi s.l. Conodont Zone, sample H407 (20, 21); Barn Canyon Member, Rossodus manitouensis Conodont Zone, sample LDN600 (17–19); 17–19, USNM 516737, dorsal valve exterior, x21, detail of umbonal region, x47, detail of post larval pitting, x346; 20, 21, USNM 516738, ventral valve exterior, x42, oblique lateral view, x44; 22–25, USNM 516739, ventral valve exterior, x88, oblique lateral view, x91, detail of larval shell, x227, detail of post larval pitting, x455; 26, USNM 516741, ventral valve interior, x43; 27, USNM 516742, oblique lateral view of ventral valve interior, x35

Journal of Paleontology 2002;76:211-228.
LINGULATE BRACHIOPODS FROM THE CAMBRIAN-ORDOVICIAN BOUNDARY BEDS OF UTAH
LEONID E. POPOV, LARS E. HOLMER, and JAMES F. MILLER
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FIGURE6—1–15,Conotreta millardensis new species House Limestone, Barn Canyon Member, Cordylodus angulatus Conodont Zone, sample H498; 1, 2, USNM 516716, dorsal valve exterior, x34, oblique lateral view, x35; 3, 4, USNM 516717, dorsal valve interior, x54, oblique lateral view, x66; 5, Holotype, USNM 516718, dorsal valve interior, x32; 6, 7, oblique lateral views of 5, x35; 8–10, USNM 516719, ventral valve exterior,x37, oblique posterior view of, x43, oblique lateral view, x43; 11–13, USNM 516720, ventral valve exterior, x99, oblique lateral view of ventral valve exterior, x130, detail of larval shell, x199; 14, USNM 516721, ventral valve interior, x46; 15, USNM 516722, detail of apical process, x85. 16–26,Schizambon typicalis Walcott; Barn Canyon Member, Cordylodus lindstromi s.l. Conodont Zone, sample H421 (16, 17); Cordylodus angulatus Conodont Zone, H498 (18, 19, 20); Pogonip Limestone (21–26), Nevada, Eureka district; 16, 17, USNM 516730, dorsal valve exterior, x33, oblique posterior view, x36; 18, 19, USNM 516731, dorsal valve exterior, x22, detail of larval shell, x98; 20, USNM 516732, dorsal valve interior, x32; 21, USNM 143025d, dorsal valve interior, x12; 22–26, USNM 459671a, ventral valve exterior, x11, detail of ornamentation, x55, lateral view, x12, detail of pedicle track, x50; 26, USNM 459671b, ventral valve interior showing pseudointerarea and internal foramen, x37

Journal of Paleontology 2002;76:211-228.
LINGULATE BRACHIOPODS FROM THE CAMBRIAN-ORDOVICIAN BOUNDARY BEDS OF UTAH
LEONID E. POPOV, LARS E. HOLMER, and JAMES F. MILLER
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FIGURE7—1–26,Eurytreta cf. bisecta (Matthew, 1901). House Limestone, Barn Canyon Member,Cordylodus lindstromi s.l. Conodont Zone, samples H407 (15), H424 (5, 6, 12, 13, 16, 25); Barn Canyon Member, Cordylodus angulatus Conodont Zone, samples H462 (1, 2, 17, 18, 20, 21, 26), H485 (22–24), H487 (3, 4, 10, 11, 19); Red Canyon Member, Rossodus manitouensis Conodont Zone, sample LDN600 (7–9, 14); 1, 2, USNM 516743, dorsal valve exterior, x51, oblique lateral view, x58; 3, 4, USNM 516744, dorsal valve interior, x31, oblique lateral view, x38; 5, 6, USNM 516745, dorsal valve interior, x29, oblique lateral view, x31; 7–9, USNM 516746, ventral valve exterior, x26, oblique lateral view, x33, detail of larval shell, x280; 10, USNM 516747, ventral valve exterior, x49; 11, USNM 516748, dorsal valve interior, x46; 12, 13, USNM 516749, dorsal valve exterior, x32, oblique lateral view, x42; 14, USNM 516750, oblique lateral view of ventral valve interior, x24; 15, USNM 516751, dorsal valve exterior, x29; 16, USNM 516752, oblique lateral view of ventral valve exterior, x43; 17, 18, USNM 516753, dorsal valve interior, x51, oblique lateral view, x61; 19, USNM 516754, ventral valve interior, x43; 20, 21, USNM 516755, dorsal valve interior, x49, oblique lateral view, x56; 22–24, USNM 516756, oblique lateral view of ventral valve exterior, x94, oblique posterior view, x125, detail of larval shell, x398; 25, USNM 516757, ventral valve interior, x89; 26, USNM 516758, ventral valve interior, x61

Journal of Paleontology 2005;79:884-906.
LOWER ORDOVICIAN (TREMADOCIAN) LINGULATE BRACHIOPODS FROM THE HOUSE AND FILLMORE FORMATIONS, IBEX AREA, WESTERN UTAH, USA
LARS E. HOLMER, LEONID E. POPOV, MICHAEL STRENG, and JAMES F. MILLER
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FIGURE 10—Schizambon obtusus n. sp., Cordylodus angulatus Zone, Barn Canyon Member, samples A170.5 (1–13, 17–20), A190 (14–16, 21), Section A. 1–5, USNM 526125, dorsal valve exterior, x18, oblique posterolateral view, x24, dorsal umbo and juvenile shell, x50, "spinose" mature ornamentation, x260, anterior margin with "spinose" ornamentation, x65, respectively; 6, 7, USNM 526126, dorsal valve interior, x18, lateral view of dorsal interior, x18, respectively; 8–13, USNM 526127, holotype, lateral view of ventral exterior, x24, ventral valve exterior, x17, oblique posterolateral view, x24, posterior view of pedicle foramen and juvenile shell, x90, ventral umbo and pedicle foramen, x95, mature ornamentation with low nodes directly anterior of pedicle foramen, x110, respectively; 14, 15, USNM 526128, ventral valve exterior, x15, pedicle foramen, x150, respectively; 16, USNM 526129, lateral view of dorsal valve exterior, x24; 17–20, USNM 526130, lateral view of ventral valve interior, x18, anterior view of internal pedicle tube and visceral area, x45, oblique anterolateral view of ventral interior, x36, ventral pseudointerarea, x34, respectively; 21, USNM 526131, exfoliated primary layer of ventral valve exterior, x150

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FIGURE 12—Eurytreta cf. bisecta (Matthew, 1901), Cordylodus angulatus Zone, Red Canyon Member, sample LD593, Lava Dam North section. 1, 2, USNM 526135, dorsal valve exterior, x26, posterior view of dorsal first-formed shell, x160, respectively; 3–7, USNM 526136, ventral valve exterior, x45, lateral view, x55, posterior view, x55, detail of first-formed shell, x200, detail of pustulose mature ornamentation, x180, respectively; 8, USNM 526137, dorsal valve interior, x40; 9, USNM 526138, oblique anterior view of ventral valve interior, x36

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FIGURE 7—Wahwahlingula sevierensis n. sp., House Limestone, Cordylodus angulatus Zone, Barn Canyon Member, sample LD219.5 (1–13), Red Canyon Member, sample LD593 (14–17), Lava Dam North section, Utah. 1, USNM 526115, ventral valve exterior, x8; 2, 3, USNM 526116, ventral valve exterior, x9, lateral view, x10, respectively; 4, 5, USNM 526117, ventral pseudointerarea, x9, lateral view of pseudointerarea, x9, respectively; 6–9, USNM 526118, oblique anterior view of dorsal valve interior, x7, oblique anterior view of dorsal pseudointerarea, x12, dorsal valve interior, x9, lateral view of dorsal interior, x13, respectively; 10, 11, USNM 526119, oblique anterior view of ventral valve interior, x8, oblique anterior view of ventral pseudointerarea, x13, respectively; 12, 13, USNM 526120, lateral view of dorsal valve exterior, with position of 13 indicated, x8, detail of pitted mature ornamentation, x280, respectively; 14–16, USNM 526121, dorsal brephic valve exterior with position of 15 indicated, x75, boundary between first-formed and brephic shell with position of 16 indicated, x320, pitted ornamentation of first-formed shell, x1,300, respectively; 17, USNM 526122, oblique posterolateral view of dorsal first-formed shell, x150

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FIGURE 9—1–3, USNM 526124, Siphonobolus? sp., Cordylodus angulatus Zone, Barn Canyon Member, sample LD219.5, Lava Dam North section; dorsal valve exterior, x15, lateral view, x22, posterior view, x15, respectively

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FIGURE 11—Conotreta millardensis Popov, Holmer, and Miller, 2002, Cordylodus angulatus Zone, Barn Canyon Member, sample A190, Section A. 1–3, USNM 526132, dorsal valve exterior, x26, posterior view of dorsal first-formed shell, x210, lateral view, x34, respectively; 4– 6, USNM 526133, ventral valve exterior, x34, lateral view, x34, posterior view, x34, respectively; 7, USNM 526134, lateral view of dorsal valve interior, x54

Journal of Paleontology 2000;74:386-393.
A VARIED MIDDLE ORDOVICIAN SPONGE SPICULE ASSEMBLAGE FROM WESTERN NEWFOUNDLAND
XI-GUANG ZHANG and BRIAN R. PRATT
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FIGURE 3—Microfossils from Middle Ordovician Table Cove Formation in western Newfoundland. 1, Conodont Protopanderodus aff. rectus (Lindström, 1955), X120, ROM 46924. 2, Conodont Cordylodus horridus Barnes and Poplawski, 1973, X80, ROM 46925. 3, 4, Scolecodont X120, ROM 46926, ROM 46927. 5, Graptolite Archiclimacograptus sp. X40, ROM 46928. 6, 7, Problematicum Konyrium varium Nazarov and Popov, 1976, arrow indicates a surviving central column, X120, ROM 46929, ROM 46930. 8–10, Radiolarian Inanibigutta sp. X120, X160, X160, ROM 46931, ROM 46932, ROM 46933

10.

Journal of Paleontology 2002;76:1-33.
LATE CAMBRIAN RADIOLARIAN FAUNAS AND BIOSTRATIGRAPHY OF THE COW HEAD GROUP, WESTERN NEWFOUNDLAND
MUN-ZU WON and WILLIAM J. IAMS
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FIGURE 2—Three Cow Head Group sections after James and Stevens (1986) showing a correlation of conodont zones, radiolarian assemblages, and lithology among the sections. RA1, 2, 3, 4, 5, 6: Radiolarian assemblages 1, 2, 3, 4, 5, 6. C.p./E.n. represents the boundary of Cordylodus proavus and Eoconodontus notchpeakensis zones (respectively) of late Trempealeauan age as described by Barnes (1988); and P. t. represents Proconodontus tenuiserratus, the index fossil for the P. tenuiserratus Zone of lowest Trempealeauan age; E. n. from RA4, 5, 6 indicatse the presence of Eoconodontus notchpeakensis, the index fossil for the E. notchipeakensis Zone. (1): The boundary between Franconian and Trempealeauan of James and Stevens (1986). (2): The boundary between Franconian and Trempealeauan from this study

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