Showing 101 - 125 of 155 results for dateable
Plant Macrofossil (Solidago gigantea)
oblong-cylindric, 1-2 mm long with tapering base; pubescent; pappus (short white bristles) may or may not be present in f...

Plant Macrofossil (Capsella bursa-pastoris)
compressed-elliptic, 0.5-1 mm long; attachment point slightly darker; ridged longitudinally due to bent embryo

Plant Macrofossil (Cerastium arvense)
angular-ovate to kidney shaped, 0.75-1 mm long; covered in many small tubercles (warty bumps) beginning at hilum (base) a...

Plant Macrofossil (Stellaria longifolia)
oval-orbicular, ~1 mm long; rough, bumpy texture, but generally much less so than other members of family

Plant Macrofossil (Stellaria media)
orbicular, ~1 mm long; pinched hilum (seed base); covered in angular-rounded tubercles (warty bumps); fewer tubercles rel...

Plant Macrofossil (Chamaedaphne calyculata)
abaxial (bottom) side shown; oval, 1-5 cm long and 3-15 mm wide; tips may be rounded or pointed; leathery; short petioles...

Plant Macrofossil (Chamaedaphne calyculata)
adaxial (top) side shown; oval, 1-5 cm long and 3-15 mm wide; tips may be rounded or pointed; leathery; short petioles; m...

Plant Macrofossil (Kalmia angustifolia)
abaxial (bottom) side shown; elliptic-oblong, 2-5 cm long, 0.5-2 cm wide; bottom of leaf paler than top; tips may be roun...

Plant Macrofossil (Kalmia angustifolia)
adaxial (top) side shown; elliptic-oblong, 2-5 cm long, 0.5-2 cm wide; bottom of leaf paler than top; tips may be rounded...

Plant Macrofossil (Kalmia angustifolia)
rounded, 5 sectioned capsule, 2.5-4.5 mm in diameter

Plant Macrofossil (Kalmia angustifolia)
rounded, 5 sectioned capsule, 2.5-4.5 mm in diameter

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 (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 (Andromeda glaucophlla)
rounded, 5 sectioned capsule, ~5 mm wide; indented top; style persistent at top of capsule

Plant Macrofossil (Chamaedaphne calyculata)
rounded, 5 sectioned capsule, up to 6 mm wide; indented top; style persistent from top of capsule

Plant Macrofossil (Vaccinium oxycoccos)
abaxial (bottom) side shown; ovate to narrowly triangular, 2-10 mm long, 1-3 mm wide; bottom of leaf much paler than top;...

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

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

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