Showing 26 - 34 of 34 results for do not date
Plant Macrofossil (Ceratophyllum demersum)
elliptic in outline, lenticular in cross section, body ~5 mm long; 2-3 marginal spines; body more elongate than C. echina...

Plant Macrofossil (Heteranthera dubia)
broadly elliptic, 1 mm long; longitudinally ridged; both ends (hilum and chalazal) are conspicuos

Plant Macrofossil (Potamogeton richardsonii)
earlike shape (with covering removed), 2-4 mm long; short beaked; indented along margin and face; coiled embryo

Plant Macrofossil (Vallisneria americana)
ovate-lanceolate, 1.5-2.5 mm long; white hilum (attachment scar) with black border

Plant Macrofossil (Isoetes bolanderi)
globose, 0.3-0.5 mm in diameter; ridges trisecting spore into three parts; covered in tubercles (nodules)

Plant Macrofossil (Callitriche palustris)
flattened-round, 1-1.5 mm long; pitted, narrowly winged near tips

Plant Macrofossil (Heteranthera limosa)
broadly elliptic, 0.4-0.6 mm long; longitudinally ridged; both ends (hilum and chalazal) are conspicuos

Plant Macrofossil (Zannichellia palustris)
arched-oblong, body 2-3 mm long; flattish; stalked at one end, style base persisting on other; spinelike projections alon...

Plant Macrofossil (Potamogeton zosteriformis)
earlike shape (with covering removed), 4-5 mm long; very short, blunt beak; indented along margin and face; coiled embryo...


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