Pinus sp.

Smith, MacKenzie A., Greenwalt, Dale E. & Manchester, Steven R., 2023, Diverse Fruits And Seeds Of The Mid-Eocene Kishenehn Formation, Northwestern Montana, Usa, And Their Implications For Biogeography, Fossil Imprint 79 (1), pp. 37-88 : 47

Pinus sp. S5

Text-fig. 3r, s

M a t e r i a l. USNM PAL 621289, 625839, 625925,

776560, 776562, 776564.

L o c a l i t i e s. Iron Pole, Park and Stanton Creek.

D e s c r i p t i o n. Winged seed linear 8.4–13.2 mm long, 3.3–5.1 mm wide; seed body circular to elliptical, adnate to wing, 1.4–2.4 mm tall, 1.0– 2.9 mm long; long axis of seed perpendicular to medial edge of wing; medial side of wing may have slight concavity proximal to seed body; admedial side of wing convex; seed body on proximal end; admedial edge curves convexly around to distal end forming a diagonal edge 8.0– 9.4 mm long; wing striations parallel to medial edge and slightly undulatory and different widths; widest part of wing proximal to middle half.

R e m a r k s. The fossil conforms to Wolfe and Schorn’s (1990) “atypical Pinus 1” having an adnate seed body, small admedial wing (<1 cm) and seed body (<3 mm). This seed differs from Pinus sp. S4 by having the proximal and middle portion of the wing being the widest and being wider.

Figures

Text-fig. 3. Pinaceae from the Kishenehn Formation. a: USNM PAL 621424 Abies sp. seed. Scale bar 5mm. b: USNM PAL 621991 Larix sp. winged seed. Scale bar 2mm. c: USNM PAL 622093cf. Larix sp. ovuliferous cone. Scale bar 3mm. d: USNM PAL 776558 Picea sp. 1 winged seed. Scale bar 3mm. e: USNM PAL 776565 Picea sp. 2 seed. Scale bar 5mm. f: USNM PAL 619964 Pinaceae Cone 1. Scale bar 1cm. g: USNM PAL 776557 Pinaceae Cone 2. Scale bar 1cm. h: USNM PAL 620025 Pinaceae Cone 3. Scale bar 1cm. i: USNM PAL 776556 Pinus sp. C1. Scale bar 2cm. j: DMNH EPI. 48178 Pinus sp. L1 3-leaf fascicle. Scale bar 2cm. k: USNM PAL 776570 Pinus sp. C2 Pinus subg. Strobus female cone. Scale bar 1cm. l: USNM PAL 621980 Pinus subg. Strobus, Pinus sp. S1 winged seed. Scale bar 3mm. m: USNM PAL 622300 Pinus subg. Strobus, Pinus sp. S1 winged seed. Scale bar 5mm. n: USNM PAL 776567 Pinus subg. Strobus, Pinus sp. S2 seed. Scale bar 2mm. o: USNM PAL 620785 Pinus subg. Strobus, Pinus sp. S3 winged seed, with seed body disarticulated. Scale bar 2mm. p: USNM PAL 626064 Pinus subg. Pinus female cone scale Pinus sp. C3. Scale