|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|B. H. Tiffney 1993||Seed approximately 5 mm long, 4 mm in maximum diameter, the enlarged hilum forming a truncate scar 2.5 mm in diameter at one end of the seed, and at a right angle to its long axis (size estimated from scale of photographed specimen and exposed portions of remaining specimen). Testa black, smooth, and featureless. One end truncated by a flat plane, in the center of which is a hole into the interior of the seed. The margin of the hole is extremely smooth and evidently formed as a part of the genetic structure of the seed, not the result of insect or other damage subsequent to growth of the seed. The hole is interpreted to be the missing hilar zone, probably destroyed in the process of germination, or possibly by bacterial action in the early stages of fossilization.|