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FIGURE 10. Chainodictyon minor Ulrich, 1890 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 10. Chainodictyon minor Ulrich, 1890, (A): longitudinal thin section showing autozooecial chambers (XCI 42). Fabifenestella compactilis (Condra, 1902) (B–G): B – tangential section showing autozooecial apertures and chambers with hemisepta (XCI 49); C–E – fragment of colony showing fenestrules, autozooecial apertures and keels with nodes (arrow – apertural pore) (XCI 107); F, G – tangential section showing autozooecial apertures and chambers with hemisepta, and keels with nodes (XCI 62). Laxifenestella placida Moore, 1929 (H) – deep tangential section showing autozooecial chambers with hemisepta (XCI 65).

FIGURE 9. Rhombocladia delicata Rogers, 1900 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 9. Rhombocladia delicata Rogers, 1900: (A) – transversal thin section (XCI 22c), (B) – branch longitudinal thin section (XCI 22b). Chainodictyon minor Ulrich, 1890, (C–G): C – branch fragment and colony surface showing autozooecial apertures (XCI 106); D – branch reverse side showing transversal striation (XCI 125); E–G – tangential thin section showing fenestrules, autozooecial apertures and chambers, and a leptozooecium (arrow) (XCI 37).

FIGURE 8. Rhombopora lepidodendroides Meek, 1872 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 8. Rhombopora lepidodendroides Meek, 1872 (A–C): A – branch transverse section (XCI 58a); B, C – branch longitudinal section showing autozooecial chambers and aktinotostyles in autozooecial wall (XCI 45b). Streblotrypa (Streblotrypa) multipora Warthin, 1930 (D–G): D, E – branch fragment showing autozooecial apertures and metazooecia (XCI 104); F – branch transverse section showing autozooecial chambers and axial bundle (XCI 39b); G – branch longitudinal section showing branch transverse section showing autozooecial chambers with hemisepta (arrows) and axial bundle (XCI 40). Rhombocladia delicata Rogers, 1900 (XCI 105) (H–I) – branch fragment (H) and colony surface showing autozooecial apertures, acanthostyles and paurostyles (I).

FIGURE 6. Cystodictya formosa Moore, 1929 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 6. Cystodictya formosa Moore, 1929 (A–B): A – deep tangential section showing autozooecial chambers with hemisepta and vesicular skeleton (XCI 27); B – branch transverse section showing mesotheca, autozooecial chambers and vesicles (XCI 23c). Goniocladia grahamensis Moore, 1929 (C–E): branch fragment showing the shape of fenestrule, ridges on branches and autozooecial apertures with lunaria (XCI 100). Dyscritella felixi n. sp. (F–H): F – colony encrusting a brachiopod spine (holotype XCI 101); G – colony surface showing autozooecial apertures, exilazooecia, and acanthostyles; H – tangential thin section showing autozooecial apertures, exilazooecia, and acanthostyles (paratype XCI 86).

FIGURE 7. Dyscritella felixi n in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 7. Dyscritella felixi n. sp. (A–B): longitudinal thin section of a colony encrusting a brachiopod spine (paratype XCI 87). Rhombopora lepidodendroides Meek, 1872 (C–H): C – branch fragment (XCI 102); D, F – colony surface with autozooecial apertures, acanthostyles and aktinotostyles (XCI 102); E – colony surface with autozooecial apertures, acanthostyles and aktinotostyles (XCI 103); G, H – tangential thin section showing autozooecial apertures, acanthostyles and aktinotostyles (XCI 80b).

FIGURE 5 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 5. Eridopora beilensis Perkins and Perry in Perkins et al., 1962 (A–B): A – tangential thin section showing autozooecial apertures and vesicles (XCI 36); B – longitudinal thin section of a colony on echinoderm fragment showing autozooecial chambers and vesicles (XCI 59a). Cystodictya formosa Moore, 1929 (C–G): C, D – branch fragment with autozooecial apertures and lunaria (XCI 99); E–F: tangential thin section showing autozooecial apertures with lunaria (XCI 23a); G – deep tangential section showing autozooecial chambers with hemisepta and vesicular skeleton (XCI 23a).

FIGURE 4. Fistulipora nodulifera Meek, 1872 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 4. Fistulipora nodulifera Meek, 1872 (A–C): A – colony surface with autozooecial apertures and lunaria (XCI 97); B – tangential thin section showing autozooecial apertures with lunaria and vesicles (XCI 29); C – longitudinal thin section showing autozooecial chambers and vesicles (XCI 56b). Eridopora beilensis Perkins and Perry in Perkins et al., 1962 (D–F): discoidal colony showing autozooecial apertures with triangular lunaria (XCI 98).

FIGURE 12. Laxifenestella texana n in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 12. Laxifenestella texana n. sp. (A–G): A–C – tangential section showing autozooecial apertures and chambers, and reproductive heterozooecia (arrows) (holotype XCI 81). D – colony fragment showing fenestrules, autozooecial apertures divided by keels with nodes (paratype XCI 109); E – colony fragment showing reproductive heterozooecia (arrows) (paratype XCI 109); F – almost intact chamber of a reproductive heterozooecium (paratype XCI 110); G – colony fragment showing secondary nanozooecia (arrows) (paratype XCI 111). Cavernella praecavifera (Schulga-Nesterenko, 1951) (H) – colony fragment showing fenestrules, autozooecial apertures divided by keels with nodes (XCI 112).

FIGURE 3. Picked bryozoan fragments from the disaggregated, sieved samples from the Finis Shale. A – profile B15 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 3. Picked bryozoan fragments from the disaggregated, sieved samples from the Finis Shale. A – profile B15; B – profile B16; C – profile C5; D – profile C13.

FIGURE 15 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 15. Acupipora elliptica (Rogers, 1900) (A–D): A – branch fragment with autozooecial apertures, nodes and nanozooecium (arrow) (XCI 113). B, C – deep tangential section showing autozooecial chambers with hemisepta (XCI 70); D – tangential section showing autozooecial apertures (XCI 70). Polypora triangularis Rogers, 1900 (E–H): E, F – tangential section showing autozooecial apertures and chambers (XCI 50); G, H – tangential section showing autozooecial apertures and reproductive heterozooecia (arrows) (XCI 26).

FIGURE 17. Polypora aff. hexagona Moore, 1929 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 17. Polypora aff. hexagona Moore, 1929 (A–E): tangential section showing autozooecial apertures and chambers, nodes, microstyles, and reproductive heterozooecia (arrows) (XCI 55). Septopora blanda Moore, 1929 (F– I): F – tangential section showing autozooecial chambers and cyclozooecia (XCI 54); G – colony fragment with cyclozooecia on the reverse side (arrows) (XCI 119). H, I – colony fragment with autozooecial apertures, keel nodes, and cyclozooecia (arrows) (XCI 120).

FIGURE 19. Penniretepora oculata Moore, 1929 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 19. Penniretepora oculata Moore, 1929 (A–E): A, B – branch fragment with autozooecial apertures divided by keel with nodes (XCI 124); C, D – tangential section showing autozooecial chambers (XCI 96); E – tangential section showing autozooecial apertures (arrow: nanozooecium) (XCI 96).

FIGURE 13 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 13. Cavernella praecavifera (Schulga-Nesterenko, 1951) (A–F): A–B – colony fragment with broken autozooecial chambers (XCI 126); C – autozooecial aperture with preserved stellate structure (XCI 127); D – colony fragment showing a weathered cavernozooecium (arrow) (XCI 128); E, F – tangential section showing autozooecial apertures and chambers (XCI 69).

FIGURE 2 in Stenolaemate bryozoans from the Graham Formation, Pennsylvanian (Virgilian) at Lost Creek Lake, Texas, USA

FIGURE 2. Stratigraphy and sampled sections of the Finis Shale at TXV-200. A – stratigraphic position of the Finis Shale Member modified after Yang and Kominz, 2003 (fig. 2). B – measured sections, not from the base of the Finis Shale; base represented by accessible part of the Finis at individual section (compare with Figure 1); profile C is marked by exclusively yellowish shale, profile B by grey shale that only mixes with yellowish shale in the uppermost part; the latter section is capped by the Jacksboro Limestone. Ss – sandstone.

FIGURE 6. SHSU 1-235 in First fossil manatees in Texas, USA: Trichechus manatus bakerorum from Pleistocene beach deposits along the Gulf of Mexico

FIGURE 6. SHSU 1-235, mandibular symphysis with partial left dentary ramus in dorsal (A), ventral (B), and anterior (C) views. The shallow dorsoventral depth and low, rounded ventrally projecting boss (arrow) are diagnostic features of the extinct morphotype Trichechus manatus bakerorum. Scale bar equals 2 cm.

FIGURE 5. SHSU 1-231 in First fossil manatees in Texas, USA: Trichechus manatus bakerorum from Pleistocene beach deposits along the Gulf of Mexico

FIGURE 5. SHSU 1-231, edentulous right anterior maxilla fragment in dorsal (A) and ventral (B) views. Note the resorbed anterior alveolar region typical of manatees. The rubber band was not removed because it was considered to be part of the history of the specimen. Scale bar equals 2 cm.

FIGURE 4. SHSU 1-027 in First fossil manatees in Texas, USA: Trichechus manatus bakerorum from Pleistocene beach deposits along the Gulf of Mexico

FIGURE 4. SHSU 1-027, edentulous left dentary in lingual (A) and labial (B) views. Scale bar equals 2 cm.

FIGURE 1 in First fossil manatees in Texas, USA: Trichechus manatus bakerorum from Pleistocene beach deposits along the Gulf of Mexico

FIGURE 1. Map showing manatee occurrences along the northwestern coast of the Gulf of Mexico. The two red stars mark the locations of fossil specimens from McFaddin Beach (to the northeast) and Corpus Christi Bay (to the southwest). The blue symbols indicate historical occurrences, including sightings (circles), caracasses (squares), and captured specimens (triangles). Historical distribution data are modified from Fertl et al. (2005). North at top.

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Figure 13 in Late Viséan (late Mississippian) ammonoids from the Barnett Shale, Sierra Diablo Escarpment, Culberson County, Texas, USA

Figure 13. Choctawites kentuckiensis (Miller, 1889). (a) Cross section of specimen 57a from Moorefield, Arkansas; × 2.5. (b) Cross section of specimen MB.C.25470 from Moorefield, Arkansas; × 2.5. (c) Suture line of specimen MB.C.25471 from Moorefield, Arkansas, at 14.1 mm diameter, 10.2 mm ww, 6.6 mm wh; × 5.0. (d–f) Ontogenetic development of the conch width index (ww / dm), umbilical width index (uw / dm), and WER of all available specimens (cross section (a) was produced by R. Kant; the original specimen is stored in the collections of the University of Iowa, acetate peels are stored in the collections of the GPI Tübingen).