Showing 51 - 75 of 155 results for dateable
Plant Macrofossil (Campanula americana)
compressed, oval to elliptic, 0.5-1 mm long; glossy; conspicuous seed coat lighter in color than body

Plant Macrofossil (Nyssa sylvatica)
compressed ovoid to ellipsoid, ~7 x 5 x 3 mm; several grooves/stripes on each face

Plant Macrofossil (Cerastium nutans)
angular-ovate, flat; ~0.5 mm long; surface with distinct tubercles (wart like projections); must compare to other tubercl...

Plant Macrofossil (Linum striatum)
wedge shaped, like narrow sector of sphere, 1-2 mm long; one side nearly straight

Plant Macrofossil (Iodanthus pinnatifidus)
oval to spatulate, 1-1.2 cm long; visible attachement point; surface pitted-reticulate;

Plant Macrofossil (Agastache foeniculum)
oblong rounded-triangular, 1-1.5 mm long; surface ridged, with bristles clustered at top and along margins

Plant Macrofossil (Quercus macrocarpa)
nut depressed to narrowly ovate, 2-5 cm long, 2-4 cm wide; cup covering 1/3 to 3/4 of nut; marginal cup scales awned, fo...

Plant Macrofossil (Quercus macrocarpa)
nut depressed to narrowly ovoid, 2-5 cm long, 2-4 cm wide; cup covering 1/3 to 3/4 of nut; marginal cup scales awned, fo...

Plant Macrofossil (Quercus palustris)
nut 10-16 mm long, 9-15 mm wide; cup shallow, saucer shaped, covering 1/5 to 1/4 of nut

Plant Macrofossil (Ostrya virginiana)
obovate 1-3 cm, enclosing seed, slightly inflated; bristly at base

Plant Macrofossil (Ostrya virginiana)
compressed lanceolate-ellipsoid, ~4 x 2.2 x 1 mm; thin, brownish, papery coat lining inside of wall; smooth, unribbed sur...

Plant Macrofossil (Salvia lyrata)
elliptic compressed-triangular, 2-2.5 mm long; surface marbled with streaks and/or netted lines

Plant Macrofossil (Quercus palustris)
nut 10-16 mm long, 9-15 mm wide; cup shallow, saucer shaped, covering 1/5 to 1/4 of nut

Plant Macrofossil (Fraxinus nigra)
fruit flat, lanceolate to oblanceolate, ~2.5-4 cm x 6-10 mm; very small notch at tip of wing

Plant Macrofossil (Quercus velutina)
nut ovoid, 6-13 mm long; cup bowl shaped, covering 1/2 of nut; large, pubescent scales; marginal scales projecting, formi...

Plant Macrofossil (Quercus velutina)
nut ovoid, 6-13 mm long; cup bowl shaped, covering 1/2 of nut; large, pubescent scales; marginal scales projecting, formi...

Plant Macrofossil (Polygonum scandens)
triangular in cross section, ~ 4 mm long, ~3.5 mm wide at widest point; smooth and shiny; perianth (outer covering) most ...

Plant Macrofossil (Morus rubra)
oval-lenticular to ovate, 1.5-3 mm long; a light colored, slender attachment stalk appressed to thinnest edge of seed; in...

Plant Macrofossil (Thalictrum dioicum)
elliptic, 2.5-4 mm long; very strongly ribbed; nearly symmetrical

Plant Macrofossil (Fagus grandifolia)
sharply triangular, 4 sided, 4-10 mm long

Plant Macrofossil (Tilia americana)
globose, 6-10 mm in diameter; pubescent, hard

Plant Macrofossil (Ranunculus hispidus)
flat-lenticular in cross-section, obovate in outline, 2-3.5 mm; prominently beaked and sometimes with marginal wing

Plant Macrofossil (Claytonia virginica)
oval-lenticular, 1-2 mm; black, very shiny; note marginal cleft plugged with white material

Plant Macrofossil (Fraxinus americana)
fruit linear to oblanceolate, 3-5 cm; wing extending 1/3 the length of the body

Plant Macrofossil (Fraxinus pennsylvanica)
fruit linear to spatulate, 2.5-7.5 cm long; wing extending ~1/2 the length of body

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CSD Facility

116 Church Street NE, Minneapolis, MN 55455

P: 612-626-7889

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