Showing 126 - 150 of 155 results for dateable
Plant Macrofossil (Luzula acuminata)
subglobose, 1-1.2 mm; clear-yellow elaiosome (lipid rich deposit used to attract insect dispersal) attached to seed

Plant Macrofossil (Lycopus americanus)
abaxial (bottom) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed

Plant Macrofossil (Lycopus americanus)
adaxial (top) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed

Plant Macrofossil (Picea glauca)
linear, 1.5-2 cm long; 4 angled in cross-section; stiff, sharp tipped

Plant Macrofossil (Lycopus americanus)
obovate to compressed triangular, 1-2 mm long; white mouth at seed attachment base; globules on inner face; globules and ...

Plant Macrofossil (Picea glauca)
biconvex, 2-3 mm long; wing 5-8 mm long

Plant Macrofossil (Picea mariana)
biconvex, 1.5-2 mm long; wing 2-5 mm long

Plant Macrofossil (Rumex occidentalis)
triangular, sides slightly convex, 1-2 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Poly...

Plant Macrofossil (Rumex maritimus)
triangular, sides convex, 1-1.5 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Polygonum)

Plant Macrofossil (Anemone canadensis)
flat, obovate, 3-5 mm; long beak 2-4 mm long; winged; wooly hairs

Plant Macrofossil (Boehmeria cylindrica)
obovate-compressed, 0.5-0.7 mm long; pointed style base (tip); body surrounded by wing-like ring of spongy tissue, except...

Plant Macrofossil (Laportea canadensis)
flattened-ovate, 1.5-2 mm long; marginal seam that is lighter in color than seed body; short beaked

Plant Macrofossil (Saxifraga rivularis)
elliptic, 0.3-0.5 mm long; finely pitted surface; embryo folded so that lengthwise dark brown line is visible

Plant Macrofossil (Staphylea trifolia)
elliptic, 5-7 mm long; conspicuous micropyle opening (hole at seed base); smooth, shiny

Plant Macrofossil (Betula papyrifera)
subfossil specimen; note remnant of wings, persistent stigmas, characteristic size and shape (elliptic, 1.5-3 mm)

Plant Macrofossil (Silene nivea)
rounded, kidney shaped, 0.5-1.5 mm long; dark tipped, cone shaped tubercles (warty bumps) in concentric rows, increasing ...

Plant Macrofossil (Silene stellata)
compressed kidney shaped, 0.5- 1 mm; rounded, irregular shaped tubercles (warty bumps) concentric from hilum (seed base)

Plant Macrofossil (Stellaria aquatica)
oval-orbicular, ~1 mm long; surface is hoarfrost patterned; margins covered in large, rounded tubercles (warty bumps)

Plant Macrofossil (Leersia oryzoides)
flattened oval, 4-5 mm long, 1-2 mm wide; lemma with conspicous bristles

Plant Macrofossil (Populus tremuloides)
ovate, minute, 0.5-0.8 mm; covered in white hairs; conspicuous white-light yellow base

Plant Macrofossil (Gleditsia triacanthos)
abaxial side (bottom of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakl...

Plant Macrofossil (Gleditsia triacanthos)
adaxial side (top of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakly r...

Plant Macrofossil (Prunus serotina)
pit spheroid, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surfac...

Plant Macrofossil (Prunus serotina)
pit globose, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surface...

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