Academia.eduAcademia.edu

Figure 15 – uploaded by Tomasz Sulej

See full PDFdownloadDownload figure
Fig. 15. Isolated jaw bones of small tetrapods from the lacustrine bone-bearing horizon at Krasiejéw. A. A sphenodontian dentary. B. Maxilla of unidentified vertebrate. Sphenodonts. — An almost complete dentary with teeth completely fused with the bone demonstrates presence of herbivorous squamates in Krasiejéw (Fig. 15). The specimen awaits taxonomic study.

Figure 15 Isolated jaw bones of small tetrapods from the lacustrine bone-bearing horizon at Krasiejéw. A. A sphenodontian dentary. B. Maxilla of unidentified vertebrate. Sphenodonts. — An almost complete dentary with teeth completely fused with the bone demonstrates presence of herbivorous squamates in Krasiejéw (Fig. 15). The specimen awaits taxonomic study.

Related Figures (20)

CONTENTS
CONTENTS
Fig. 2. A-E. Variation in shape of characean gyrogonites from the lacustrine horizon at Krasiejéw. F. Associated ostraco¢ Darwinula sp. G. Ostracod Suchonella sp.
Fig. 2. A-E. Variation in shape of characean gyrogonites from the lacustrine horizon at Krasiejéw. F. Associated ostraco¢ Darwinula sp. G. Ostracod Suchonella sp.
Fig. 3. Unionid bivalves from the lacustrine bed at Krasiejow. A. Accumulation of opened shells. B, C. Restoration of the left valve and interior of closed valves showing disposition of muscle attachment scars. D. Ornamentation of juvenile shell. E, F. Three-dimensionally preserved gills in a specimen with opened valves.
Fig. 3. Unionid bivalves from the lacustrine bed at Krasiejow. A. Accumulation of opened shells. B, C. Restoration of the left valve and interior of closed valves showing disposition of muscle attachment scars. D. Ornamentation of juvenile shell. E, F. Three-dimensionally preserved gills in a specimen with opened valves.
Fig. 4. Conchostracans (spinicaudatans) Laxitextella from the lacustrine horizon at Krasiejow. A. Restoration of the right valve of the carapace. B. Mass occurrence of mostly articulated valves.
Fig. 4. Conchostracans (spinicaudatans) Laxitextella from the lacustrine horizon at Krasiejow. A. Restoration of the right valve of the carapace. B. Mass occurrence of mostly articulated valves.
Cycloids. — Probably the most unusual member of the Krasiej6w invertebrate fauna is a crab-like crusta- cean with an oval carapace that has a diametre up to 5 cm. The dorsal surface of the carapace is ornamented with sub-radial striations and rather prominent tubercles (Fig. 5). These are clearly relatives of the cycloid lineage of Halicyne, known to range from the Late Carboniferous to Late Triassic (Schram ef al. 1997). Fig. 5. The cycloid crab-like crustacean from the lacustrine bed at Krasiej6w. A. Restoration of the animal in dorsal view. B. Specimen with well preserved gills.
Cycloids. — Probably the most unusual member of the Krasiej6w invertebrate fauna is a crab-like crusta- cean with an oval carapace that has a diametre up to 5 cm. The dorsal surface of the carapace is ornamented with sub-radial striations and rather prominent tubercles (Fig. 5). These are clearly relatives of the cycloid lineage of Halicyne, known to range from the Late Carboniferous to Late Triassic (Schram ef al. 1997). Fig. 5. The cycloid crab-like crustacean from the lacustrine bed at Krasiej6w. A. Restoration of the animal in dorsal view. B. Specimen with well preserved gills.
Ganoids. — Ganoid fish scales and teeth occur with high frequency in the lacustrine fossil-bearing hori- on at KrasiejOw, but articulated specimens are rare and difficult to extract from the rock. The most informa- ive specimens are preserved within small limestone concretions. In two of them, details of the skull bones ire recognizable and the relative position of pectoral, pelvic and anal fins can be seen (Fig. 6). Two other ar- Fig. 6. A ganoid fish from the lacustrine bed at Krasiejow, possibly “Dictyopyge” socialis (Berger, 1843). A. Preliminary restora- tion of the body. B. Anterior part of the body with head and pectoral fins preserved in calcareous concretion. C. Posterior part of the body preserved in clay (specimen collected by K. Ksiazkiewicz).
Ganoids. — Ganoid fish scales and teeth occur with high frequency in the lacustrine fossil-bearing hori- on at KrasiejOw, but articulated specimens are rare and difficult to extract from the rock. The most informa- ive specimens are preserved within small limestone concretions. In two of them, details of the skull bones ire recognizable and the relative position of pectoral, pelvic and anal fins can be seen (Fig. 6). Two other ar- Fig. 6. A ganoid fish from the lacustrine bed at Krasiejow, possibly “Dictyopyge” socialis (Berger, 1843). A. Preliminary restora- tion of the body. B. Anterior part of the body with head and pectoral fins preserved in calcareous concretion. C. Posterior part of the body preserved in clay (specimen collected by K. Ksiazkiewicz).
Fig. 7. The dipnoan and problematic fish from the lacustrine bed at Krasiejow. A. Tooth plate of Ceratodus silesiacus Roemer, 1870. B, C. Scales possibly belonging to the same species. D-I. Fish scales with feather-like organization and longitudinal ribs.
Fig. 7. The dipnoan and problematic fish from the lacustrine bed at Krasiejow. A. Tooth plate of Ceratodus silesiacus Roemer, 1870. B, C. Scales possibly belonging to the same species. D-I. Fish scales with feather-like organization and longitudinal ribs.
Fig. 8. Restoration of the skeleton of Metoposaurus diagnosticus krasiejowensis Sulej, 2002 in ventral (A), dorsal (B), and left lateral (C) views (modified from Sulej this volume).
Fig. 8. Restoration of the skeleton of Metoposaurus diagnosticus krasiejowensis Sulej, 2002 in ventral (A), dorsal (B), and left lateral (C) views (modified from Sulej this volume).
Fig. 9. Problematic isolated vertebrate bones from the lacustrine horizon at Krasiej6w. A. Caudal vertebra of a pterosaur or cervical vertebra of Tanystropheus. B, C. Jaw bone of a pycnodont fish or an unidentified tetrapod in labial and occlusal views, respectively.
Fig. 9. Problematic isolated vertebrate bones from the lacustrine horizon at Krasiej6w. A. Caudal vertebra of a pterosaur or cervical vertebra of Tanystropheus. B, C. Jaw bone of a pycnodont fish or an unidentified tetrapod in labial and occlusal views, respectively.
Fig. 10. Restoration of the skull of Paleorhinus cf. arenaceus (E. Fraas, 1896) (A—C) compared with the holotype of the species (D, E; after Hungerbiihler 2001).
Fig. 10. Restoration of the skull of Paleorhinus cf. arenaceus (E. Fraas, 1896) (A—C) compared with the holotype of the species (D, E; after Hungerbiihler 2001).
Fig. 11. Restoration of the skeleton of Paleorhinus cf. arenaceus (E. Fraas, 1896). A. Mature specimen (modified drawing of M. Lubka). B. Juvenile (after Dzik et al. 2000).
Fig. 11. Restoration of the skeleton of Paleorhinus cf. arenaceus (E. Fraas, 1896). A. Mature specimen (modified drawing of M. Lubka). B. Juvenile (after Dzik et al. 2000).
Fig. 12. Conifers from the basal layer of lacustrine horizon at Krasiejéw. A. Seed cone of “Pachylepis” quinquies (Linck, 1951). B. Undetermined male? cone. C-E. Cone scales of Pseudohirmerella sp. n.; note imprint of a seed on D. F-H. Isolated large seeds. I, J. Old and early twigs probably belonging to Pseudohirmerella sp. n. K. “Desmiophyllum” leaf.
Fig. 12. Conifers from the basal layer of lacustrine horizon at Krasiejéw. A. Seed cone of “Pachylepis” quinquies (Linck, 1951). B. Undetermined male? cone. C-E. Cone scales of Pseudohirmerella sp. n.; note imprint of a seed on D. F-H. Isolated large seeds. I, J. Old and early twigs probably belonging to Pseudohirmerella sp. n. K. “Desmiophyllum” leaf.
Fig. 13. Coleopterans from Krasiej6w. A, B. A cupedid elytron, photograph and restoration fit in a contour of the insect. C. A finely pitted elytron.
Fig. 13. Coleopterans from Krasiej6w. A, B. A cupedid elytron, photograph and restoration fit in a contour of the insect. C. A finely pitted elytron.
Fig. 14. Restoration of the skeleton of Cyclotosaurus intermedius Sulej et Majer, 2005 in ventral (A) and left lateral (B) views. The weak development of the lateral line furrows on the skull suggests that C 'yclotosaurus lived partly on land. Its large teeth and overall body size, with a skull more than 0.5 m long, make it the largest predator of the Krasiej6w fauna. It may have been an ecological analogue of present-day crocodiles.
Fig. 14. Restoration of the skeleton of Cyclotosaurus intermedius Sulej et Majer, 2005 in ventral (A) and left lateral (B) views. The weak development of the lateral line furrows on the skull suggests that C 'yclotosaurus lived partly on land. Its large teeth and overall body size, with a skull more than 0.5 m long, make it the largest predator of the Krasiej6w fauna. It may have been an ecological analogue of present-day crocodiles.
Fig. 16. Restoration of the skeleton of Stagonolepis sp. n. from Krasiejéw in left lateral view.
Fig. 16. Restoration of the skeleton of Stagonolepis sp. n. from Krasiejéw in left lateral view.
Fig. 17. Restoration of the skull of Teratosaurus silesiacus Sulej, 2005 from Krasiejéw in left lateral (A), ventral (B), and dorsal (C) views (modified after Sulej 2005).
Fig. 17. Restoration of the skull of Teratosaurus silesiacus Sulej, 2005 from Krasiejéw in left lateral (A), ventral (B), and dorsal (C) views (modified after Sulej 2005).
Fig. 18. Articulated partial skeleton of Silesaurus opolensis Dzik, 2003 from the lacustrine horizon at Krasiejéw; skull (A) and neck with pectoral girdle (B).
Fig. 18. Articulated partial skeleton of Silesaurus opolensis Dzik, 2003 from the lacustrine horizon at Krasiejéw; skull (A) and neck with pectoral girdle (B).
Fig. 19. Corrected restoration of the sacrum of Silesaurus opolensis Dzik, 2003 from Krasiejéw in dorsal (A), ventral (B). anterior (C), and left lateral (D) views.
Fig. 19. Corrected restoration of the sacrum of Silesaurus opolensis Dzik, 2003 from Krasiejéw in dorsal (A), ventral (B). anterior (C), and left lateral (D) views.
Fig. 20. Restoration of the skull of Silesaurus opolensis Dzik, 2003 from Krasiejow in dorsal (A) and left lateral (B) views
Fig. 20. Restoration of the skull of Silesaurus opolensis Dzik, 2003 from Krasiejow in dorsal (A) and left lateral (B) views
580 California St., Suite 400
San Francisco, CA, 94104
© 2025 Academia. All rights reserved