taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558083	https://doi.org/10.3897/phytokeys.271.182323.figure4	Figure 4. Light micrographs of Halamphora lukasiewiczii sp. nov. A – K. Valves from a wild sample collected at site 2 representing holotype population; L – X. Valves from culture sample, from site 1; Y – AJ. Valves from culture sample from site 2. Scale bar: 10 µm.	Figure 4. Light micrographs of Halamphora lukasiewiczii sp. nov. A – K. Valves from a wild sample collected at site 2 representing holotype population; L – X. Valves from culture sample, from site 1; Y – AJ. Valves from culture sample from site 2. Scale bar: 10 µm.	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558084	https://doi.org/10.3897/phytokeys.271.182323.figure5	Figure 5. SEM images of Halamphora lukasiewiczii sp. nov. from a wild sample. A – F. External view of entire frustule; B. Valve with morphological variability of ventral striae. From single areola (arrowhead) at the valve apex to biseriate (black arrow), also with composed of single row of longitudinal areolae (white arrow); C. Two frustules of different sizes are visible in field of view; D. Enlargements of center and apex of valve, with variability of ventral striae – from single areolae (arrowhead) to single row of longitudinal areolae (white arrow) to rarely biseriate striae (black arrow); F. Frustule in dorsal view with numerous girdle bands; G. Internal view of valve; H. Internal view of valve apex with helictoglossae (white arrow) and numerous girdle bands. Scale bars: 5 μm (A, B, E, F); 2 μm (D); 10 μm (C, G); 4 μm (H).	Figure 5. SEM images of Halamphora lukasiewiczii sp. nov. from a wild sample. A – F. External view of entire frustule; B. Valve with morphological variability of ventral striae. From single areola (arrowhead) at the valve apex to biseriate (black arrow), also with composed of single row of longitudinal areolae (white arrow); C. Two frustules of different sizes are visible in field of view; D. Enlargements of center and apex of valve, with variability of ventral striae – from single areolae (arrowhead) to single row of longitudinal areolae (white arrow) to rarely biseriate striae (black arrow); F. Frustule in dorsal view with numerous girdle bands; G. Internal view of valve; H. Internal view of valve apex with helictoglossae (white arrow) and numerous girdle bands. Scale bars: 5 μm (A, B, E, F); 2 μm (D); 10 μm (C, G); 4 μm (H).	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558085	https://doi.org/10.3897/phytokeys.271.182323.figure6	Figure 6. SEM images of Halamphora lukasiewiczii sp. nov. from culture. A – D. External view of the entire frustule; B. Valve with variable structure of striae. Form biseriate (black arrow) to uniseriate (white arrow); E, F. Internal view of entire valve; G. Internal view of central area and raphe endings; H. Internal view of valve apex and with helictoglossae. Scale bars: 10 μm (A); 5 μm (B – F); 2 μm (G); 1 μm (H).	Figure 6. SEM images of Halamphora lukasiewiczii sp. nov. from culture. A – D. External view of the entire frustule; B. Valve with variable structure of striae. Form biseriate (black arrow) to uniseriate (white arrow); E, F. Internal view of entire valve; G. Internal view of central area and raphe endings; H. Internal view of valve apex and with helictoglossae. Scale bars: 10 μm (A); 5 μm (B – F); 2 μm (G); 1 μm (H).	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558086	https://doi.org/10.3897/phytokeys.271.182323.figure7	Figure 7. Light micrographs of living cultured Halamphora lukasiewiczii sp. nov. A – Q. culture from site 1; R – AH. Culture from site 2; A – I, R – AA. Size diminution series of valve views. J – Q, AB – AH. Frustules in ventral and dorsal views. Scale bar: 10 µm.	Figure 7. Light micrographs of living cultured Halamphora lukasiewiczii sp. nov. A – Q. culture from site 1; R – AH. Culture from site 2; A – I, R – AA. Size diminution series of valve views. J – Q, AB – AH. Frustules in ventral and dorsal views. Scale bar: 10 µm.	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558087	https://doi.org/10.3897/phytokeys.271.182323.figure8	Figure 8. Halamphora lukasiewiczii sp. nov. Cells from culture sample, from site 1 observed under fluorescence microscopy; A, B. Cells with visible chlorophyll autofluorescence; A. Pair of daughter cells displaying visible H-shaped chloroplasts; B. Group of cells, arrows indicate cell in apical view and U-shaped chloroplasts; C. Group of cells with vacuole membranes stained using MDY- 64 dye; D. Cells stained with DAPI dye, arrows indicates nucleus position. Scale bars: 10 µm.	Figure 8. Halamphora lukasiewiczii sp. nov. Cells from culture sample, from site 1 observed under fluorescence microscopy; A, B. Cells with visible chlorophyll autofluorescence; A. Pair of daughter cells displaying visible H-shaped chloroplasts; B. Group of cells, arrows indicate cell in apical view and U-shaped chloroplasts; C. Group of cells with vacuole membranes stained using MDY- 64 dye; D. Cells stained with DAPI dye, arrows indicates nucleus position. Scale bars: 10 µm.	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558080	https://doi.org/10.3897/phytokeys.271.182323.figure1	Figure 1. Sampling sites. A. Location of study area (marked by orange rectangle); B. Location of sampling sites in Uherce Mineralne (site 1) and Tyrawa Solna (site 2) marked by orange triangles; C. Site 1 – natural petroleum seep; D. Site 2 – brine and petroleum spring in an abandoned well.	Figure 1. Sampling sites. A. Location of study area (marked by orange rectangle); B. Location of sampling sites in Uherce Mineralne (site 1) and Tyrawa Solna (site 2) marked by orange triangles; C. Site 1 – natural petroleum seep; D. Site 2 – brine and petroleum spring in an abandoned well.	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
AFDD82E58376585FB6365FA03967E3B3.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://binary.pensoft.net/fig/1558088	https://doi.org/10.3897/phytokeys.271.182323.figure9	Figure 9. Light micrographs of Navicula salinarum from site number 2. A – G. Living cells from culture; H – O. Cleaned cells of N. salinarum from culture; P – W. Cleaned cells from wild material. Scale bar: 10 µm.	Figure 9. Light micrographs of Navicula salinarum from site number 2. A – G. Living cells from culture; H – O. Cleaned cells of N. salinarum from culture; P – W. Cleaned cells from wild material. Scale bar: 10 µm.	2026-03-10	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko		Zenodo	biologists	Rybak, Mateusz;Peszek, Łukasz;Górecka, Ewa;Zadrąg-Tęcza, Renata;Levkov, Zlatko			
