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Table of Contents

  1. Weno and Pawpaw formations of the Texas Comanchean; On a new ammonite fauna of the lower Turonian of Mexico
    1. Introduction

    2. Stratigraphy

    3. ROCKS UNDERLYING THE WENO AND PAWPAW FORMATIONS Weno and Pawpaw Formations

    4. STRATIGRAPHIC CORRELATION

    5. Paleontology

    6. irTHE WENO FAUNA

    7. THE PAWPAW FAUNA

    8. COMPARISON OF PYRITE FAUNA

    9. DESCRIPTION OF SPECIES

    10. CEPHALOPODA

    11. AMMONITES1

    12. ASTEROIDEA

    13. ECHINOIDEA

    14. PELECYPODA NUCULA WENOENSIS n. sp. ARCA WASHITAENSIS n. sp

    15. GASTROPODA

    16. PROTOZOA

    17. PLATE 1 Flickia, Schloenhachia, Mortoniceras, Acanthoceras


    19. PLATE 2 *.■.' Scaphites, Hamulina, Metopaster, Comptonia

    20. PLATE 3 Turrilites, Acanthoceras, Schloenbachia

    21. PLATE 4 Schloenbachia, Engonoceras, Flickia, Corbula

    22. PLATE 5 Hemiaster, Epiaster, Enallaster

    23. PLATE 6 Remondia(?), Venericardia, Amberleya, Hemiaster, Epiaster

    24. PLATE 7 Pentaceros, Comptonia, Metopaster, Pentagonaster

    25. PLATE 8 Hemiaster, Epiaster, Enallaster

    26. PLATE 9 Cyprimeria, Corbula

    27. PLATE 10 Corbula, Area, Protocardia, Neriiina, Neriia, Natica, Lunatia, Trochus, Anchura, Cinulia, Globiconclia, Turritella

    28. PLATE 11 Pecten, Epiaster, Nodosaria, Ancydoceras

    29. ON A NEW AMMONITE FAUNA OF THE LOWER TURONIAN OF MEXICO

    30. INTRODUCTION

    31. LIST OF LITERATURE CITED IN THIS PAPER

    32. STRATIGRAPHY

    33. ON THE RELATIONS BETWEEN THE FAUNA OF CERRO DEL MACHO AND ISOCHRONOUS FAUNAS OF OTHER REGIONS OF THE EARTH

    34. PALEONTOLOGY—CEPHALOPODA

    35. LAMELLIBRANCHIATA

    36. GASTROPODA

    37. ECHINODERMATA

    38. PLATE 12 Metoecoceras, Fagesia, Mammites


    40. PLATE 13 Pseudaspidoceras

    41. PLATE 14 Fagesia, Vascoceras

    42. PLATE 15 Pseudaspidoceras, Fagesia, Vascoceras

    43. PLATE 16 Vascoceras

    44. PLATE 17 Vascoceras

    45. PLATE 18 Vascoceras, Neoptychites, Exogyra

    46. PLATE 19 Hoplitoides

    47. PLATE 20 Avicula, Tylostoma, Exogyra, Inoceramus, Hemiaster

  2. Illustrations
    1. Fig. 1. Map of Texas and part of Oklahoma, showing outcrops of the Weno and Pawpaw formations and the lithological facies of the Pawpaw formation. SI—Sandstone and Ironstone; Cl—Clay; M—Marl; LS—Limestone.

    2. Fig. 2. Ancycloceras bendirei n. sp., suture of the type individual, camera lucida drawing, x 5. SL—Siphonal lobe; ASL—Antisiphonal lobe.

    3. Fig. 3. Hamulina worthensis n. sp., sutures of type individual, camera lucida drawing, x 15.

    4. Fig. 4. Baculites comanchensis n. sp., sutures of type individual, camera lucida drawing, x 8.

    5. Fig. 5. Turrilites bosquensis n. sp., sutures of type individual, camera lucida drawing, x 8. The numbers indicate the volutions on which the corresponding sutures occur.

    6. Fig. 6. Scaphit&s Killi Adkins and Winton, suture, type individual, camera lucida drawing, x 12. The fossil is figured on PL 2, fig. 1.

    7. Fig. 7. Scaphites hilli Adkins and Winton, young individual, showing the last five sutures, camera lucida drawing, x 10. The fossil is figured on PI. 2, figs. 3-4.

    8. Fig. 8. Scaphites hilli Adkins and Winton, external and internal suture, camera lucida drawing, x 10.

    9. Fig. 9. Flickia boesei n. sp., type individual, sutures, camera lucida drawing, x 8.

    10. Fig. 10. Flickia (?) bosquensis n. sp., diagrammatic projection of sutures of type individual, camera lucida drawing, x 5.

    11. Fig. 11. Schloenbachia wintoni n. sp., type individual, last suture, camera lucida drawing, x 5. Keel region slightly distorted in type individual.

    12. Pig. 12. Mortoniceras worthense n. sp., suture of individual, Plate 1, Figure 6, camera lucida drawing, x 10.

    13. Fig. 13. Acanthoceras worthense n. sp., suture, camera lucida drawing, x 8

    14. PLATE 1.

    15. PLATE 2.

    16. PLATE 3.

    17. PLATE 4.

    18. PLATE 5.

    19. PLATE 6.

    20. PLATE 7

    21. PLATE 8.

    22. PLATE 9.

    23. PLATE 10.

    24. PLATE 11.

    25. Fig. 1

    26. Figure 1. Metoecoceras aff. whitei Hyatt, suture

    27. Figure 2. Suture, Vascoceras angermanni n. sp. (above) and Vascoceras aff. adonense Choffat (below).

    28. Figure 3. Suture, Vascoceras aff. gamai Choffat

    29. Figure 4. Sutures, Vascoceras mohovanense n. sp (above) and Mammites mohovanensis n. sp. (below).

    30. Figure 5. Suture, Neoptychites aff. cephalotus Courtiller

    31. Figure 6. Suture, Neoptychites aff. cephalotus Courtiller

    32. Figure 7. Sutures, Neoptychites aff. xetriformis Pervinquiere (lower left hand corner) and Hoplitoides sp. (other three).

    33. Metoecoceras, Fagesia, Mammites. Plate 12

    34. PLATE 13

    35. PLATE 14

    36. PLATE 15

    37. PLATE 16

    38. PLATE 17

    39. PLATE 18

    40. PLATE 19

    41. PLATE 20

    42. Untitled