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Fig. 1.
a Map of Poland with enlarged studied localities (slightly modified from Remin 2004, 2010). b Section of the outcrop no. 1. and distribution of collected crinoid taxa (modified after Remin 2010; biostratigraphy after Walaszczyk 1992)
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Fig. 2. Dimensions of bourgueticrinid cups used in the present study (idea after Głuchowski 1987, modified)
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Fig. 3. Santonian crinoid Marsupites testudinarius (von Schlotheim) from the southwestern margin of the Holy Cross Mountains and GPIH. Scale
bars 1 cm. a–g Thecae. Upper Santonian. Lägerdorf. GPIH 40.1114/16-19. h–j Thecal plates. Upper Santonian. Lipnik–Kije Section. GIUS 9-3651/Mt/1-3
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Fig. 4. Upper Cretaceous crinoids from the southwestern margin of the Holy Cross Mountains. Upper Santonian/Lower Campanian. All from Lipnik–Kije Section. Scale bars 1 cm. A–F. Bourgueticrinus ellipticus (Miller). A1, A2 Thecae. Specimen with high collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/1. B1, B2 Thecae. Specimen with high collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/2. C1, C2 Thecae. Specimen with small collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/3. D1, D2 Thecae. Specimen with high collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/4. E1, E2 Thecae. Specimen with high collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/5. F1, F2 Thecae. Specimen with small collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/6
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Fig. 5. Upper Cretaceous crinoids from the southwestern margin of the Holy Cross Mountains. Upper Santonian/Lower Campanian. All from Lipnik–Kije Section. Scale bars 1 cm. a–f. Bourgueticrinus ellipticus (Miller). A1, A2 Thecae. Specimen with small collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/7. B1, B2 Thecae. Specimen with small collar and horizontal articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/8. C1, C2 Thecae. Specimen without collar and horizontal articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/9. D1, D2 Thecae. Specimen without collar and sloping articular faces. Upper and lateral views, respectively. GIUS 9-3651/Be/10. E1–E3 Thecae. Specimen with small collar, sloping articular faces, and elliptical cup base. Upper, lateral, and lower views, respectively. GIUS 9-3651/Be/11. F1–F3 Thecae. Specimen without collar, sloping articular faces, and circular cup base. Upper, lateral, and lower views, respectively. GIUS 9-3651/Be/12
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Fig. 6. Late Cretaceous crinoids from the southwestern margin of the Holy Cross Mountains. All from Lipnik–Kije Section. Scale bars 1 mm. A–C Bourgueticrinus sp. A1, A2 Thecae. Lateral and upper views, respectively. Lower Campanian. GIUS 9-3651/B/3. B–C Columnals. Lateral view. Upper Coniacian. GIUS 9-3651/B/10-11. D Isocrinus? sp. Columnals. Articular face. Upper Coniacian. GIUS 9-3651/I/3. E–G Isocrinus? granosus Valette. E. Columnals. Articular face. Upper Coniacian. GIUS 9-3651/Ig/3. F, G Cirrals. Lateral and upper views, respectively. Upper Coniacian. GIUS 9-3651/Ig/11-12. H–K Nielsenicrinus carinatus Roemer. H–I. Columnals. Articular face and lateral views, respectively. Upper Santonian. GIUS 9-3651/Nc/1-2. J, K Brachials. Upper view. Upper Santonian. GIUS 9-3651/Nc/4-5. L Austinocrinus bicoronatus (von Hagenow). Columnals. Articular face. Lower Campanian. GIUS 9-3651/Ab/1
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Fig. 7. Relationship between the height of the collar and the total height of the cup (specimens from Geologisch-Paläontologisches Museum in Hamburg) showing strong positive correlation (Spearman's rank–order correlation coefficient P = 0.25022, p = 1.16E−05)
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Fig. 8. Relationship between the height of the collar and the cup width in the narrowest point (specimens from Geologisch-Paläontologisches Museum in Hamburg) showing strong positive correlation (Spearman's rank–order correlation coefficient P = 0.21836, p = 0.000138)
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Fig. 9. Relationship between the height of the collar and the cup width in the widest point (specimens from Geologisch-Paläontologisches Museum in Hamburg) showing strong positive correlation (Spearman's rank–order correlation coefficient P = 0.16179, p = 0.004969)
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Fig. 10. Suggested phylogeny of Cretaceous bourgueticrinid crinoids
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