| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Margeriella
Taxonomy
Margeriella was named by Page (1973). Its type is Margeriella cretacea.
It was assigned to Taxodiaceae by Page (1973), Blazer (1975).
It was assigned to Taxodiaceae by Page (1973), Blazer (1975).
Species
M. cretacea (type species)
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| V. M. Page 1973 | Leaves spirally arranged, apetiolate, amphistomatic; stomata on abaxial surface in two longitudinal bands, monocyclic; guard cells slightly sunken below surface of epidermis, surrounded by two polar and 4-5 lateral subsidiary cells. Walls of epidermal cells smooth. Vascular bundle single, surrounded by thick parenchymatous sheath. A median and two lateral resin canals lie within the sheath. Spongy mesophyli and endodermis absent. Wood of tracheids, parenchyma, and uniseriate rays. Parenchyma smooth walled. Ray cells with two pits per cross-field. Inner bark of uniseriate tangential rows of sclenchyma alternating with three rows of thin-walled calls. Pith large, cells large, irregular in size and shape; largest cells with dark contents, frequently in clusters |
Measurements
No measurements are available
No ecological data are available
Age range: base of the Albian to the top of the Maastrichtian or 113.20000 to 66.00000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Albian | USA (Oregon) | M. cretacea (229463) | |
| Middle Campanian | USA (California) | Margariella sp. (144764) | |
| Maastrichtian | USA (California) | M. cretacea (191732) |