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Odontochitina kwutlkwuensis ssp. kwutlkwuensis
Autonym.
Etymology. Autonym for species.
Holotype. Plate 10A–C, Sample 18 (GSC 77455), slide E6-20 E, EF Y37/3.
Paratypes. Plate 10D–F, Sample 18, slide E6-20 E, EF B36/4; Plate 10G–I, Sample 18, slide E6-20 E, EF L23/2; Plate 11A–C, Sample 18, slide E6-20 D, EF B30/3; Plate 11D–F, Sample 18, slide E6-20 E, EF R30/ 4; Plate 11G–I, Sample 18, slide E6-20 E, EF D31/0; Plate 12A–C, Sample 18, slide E6-20 E, EF H46/4; Plate 12D–G, Sample 20, slide P5408-4 B, EF F18/3; Plate 12H, I, Sample 18, slide E6-20 D, EF B25/0; Plate 12J, K, Sample 18, slide E6-20 D, EF Z35/3; Plate 15A–C, stub 24D06, specimen 1 (CEDiT2024P194); Plate 15D–H, stub 24D02, specimen 28 (CEDiT2024P195); Plate 15I, J, stub 24D06, specimen 11 (CEDiT2024P196); Plate 16A–G, stub 24D02, specimen 27 (CEDiT2024P197); Plate 16H–J, stub 24D02, specimen 18 (CEDiT2024P198); Plate 17A, B, stub 24D01, specimen 2 (CEDiT2024P199); Plate 17C, stub 24D01, specimen 6 (CEDiT2024P200); Plate 17D–H, stub 24D02, specimen 15 (CEDiT2024P201).
Type locality. End of point ~365 m north of the Chrisman Road terminus (49.5773◦-124.8401◦), northwestern Denman Island, British Columbia, Canada (Fig. 1B, locality 3).
Type stratum. Upper Cedar District Formation, lower upper Campanian.
Repository. Geological Survey of Canada.
Diagnosis. A cornucavate to broadly circumcavate subspecies of Odontochitina kwutlkwuensis with ceratoid ambitus and three large distally-open horns. Endophragm and periphragm microfoveolate- microcorrugate, irregularly vesiculate. Gonyaulacoid tabulation expressed predominantly by the archeopyle margin and pericyst cingular ridges with folds reflecting sutures of the pre- and postcingular plate series.
Description. As for Odontochitina kwutlkwuensis sp. nov. with the exception of forms characterized by the development of sutural denticulation lending to the appearance of a serrate ambital margin herein assigned to O. kwutlkwuensis subsp. serrata sp. et subsp. nov.
Stratigraphic range. Lower upper Campanian.
Occurrence. Odontochitina kwutlkwuensis subsp. kwutlkwuensis sp. et subsp. nov. has been recovered from coastal exposures of the upper Cedar District Formation along western Denman Island (samples 15, 17–20) within the Comox OA, British Columbia, Canada.
Etymology. Autonym for species.
Holotype. Plate 10A–C, Sample 18 (GSC 77455), slide E6-20 E, EF Y37/3.
Paratypes. Plate 10D–F, Sample 18, slide E6-20 E, EF B36/4; Plate 10G–I, Sample 18, slide E6-20 E, EF L23/2; Plate 11A–C, Sample 18, slide E6-20 D, EF B30/3; Plate 11D–F, Sample 18, slide E6-20 E, EF R30/ 4; Plate 11G–I, Sample 18, slide E6-20 E, EF D31/0; Plate 12A–C, Sample 18, slide E6-20 E, EF H46/4; Plate 12D–G, Sample 20, slide P5408-4 B, EF F18/3; Plate 12H, I, Sample 18, slide E6-20 D, EF B25/0; Plate 12J, K, Sample 18, slide E6-20 D, EF Z35/3; Plate 15A–C, stub 24D06, specimen 1 (CEDiT2024P194); Plate 15D–H, stub 24D02, specimen 28 (CEDiT2024P195); Plate 15I, J, stub 24D06, specimen 11 (CEDiT2024P196); Plate 16A–G, stub 24D02, specimen 27 (CEDiT2024P197); Plate 16H–J, stub 24D02, specimen 18 (CEDiT2024P198); Plate 17A, B, stub 24D01, specimen 2 (CEDiT2024P199); Plate 17C, stub 24D01, specimen 6 (CEDiT2024P200); Plate 17D–H, stub 24D02, specimen 15 (CEDiT2024P201).
Type locality. End of point ~365 m north of the Chrisman Road terminus (49.5773◦-124.8401◦), northwestern Denman Island, British Columbia, Canada (Fig. 1B, locality 3).
Type stratum. Upper Cedar District Formation, lower upper Campanian.
Repository. Geological Survey of Canada.
Diagnosis. A cornucavate to broadly circumcavate subspecies of Odontochitina kwutlkwuensis with ceratoid ambitus and three large distally-open horns. Endophragm and periphragm microfoveolate- microcorrugate, irregularly vesiculate. Gonyaulacoid tabulation expressed predominantly by the archeopyle margin and pericyst cingular ridges with folds reflecting sutures of the pre- and postcingular plate series.
Description. As for Odontochitina kwutlkwuensis sp. nov. with the exception of forms characterized by the development of sutural denticulation lending to the appearance of a serrate ambital margin herein assigned to O. kwutlkwuensis subsp. serrata sp. et subsp. nov.
Stratigraphic range. Lower upper Campanian.
Occurrence. Odontochitina kwutlkwuensis subsp. kwutlkwuensis sp. et subsp. nov. has been recovered from coastal exposures of the upper Cedar District Formation along western Denman Island (samples 15, 17–20) within the Comox OA, British Columbia, Canada.