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Millerocaulis embreei
Taxonomy
Millerocaulis embreei was named by Stockey and Smith (2000). Its type specimen is CAS 1044, a multi organs, and it is a 3D body fossil. Its type locality is Millerocaulis near Ono, which is in an Aptian fluvial mudstone in the Budden Canyon Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Millerocaulis embreei Stockey and Smith p. 160 figs. Figures 2, 3 |
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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.
†Millerocaulis embreei Stockey and Smith 2000
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. A. Stockey and S. Y. Smith 2000 | Stem erect, 11#13 mm in diameter, sur- rounded by mantle of stipular leaf bases and adventitious roots. Stele ectophloic, siphonostelic; pith 2.6#3.3 mm in diameter, parenchymatous; xylem cylinder 0.60–0.95 mm (nine to 13 tracheids) thick; incomplete gaps, extending 1/10 to 9/10 distance through xylem cylinder associated with leaf trace departure, delayed gaps, or rarely true gaps present; gaps narrow, one to two cells wide, of variable length, 50 mm to at least 1500 mm. Inner cortex 1.2 mm wide, parenchymatous; outer cortex 2.3–4.5 mm thick, sclerenchymatous. Number of leaf traces in transverse section of cortex, 65–79. Protoxylem in leaf trace, one strand, endarch. Sclerenchyma present in concavity of petiolar vascular strand and petiolar cortex; scle- rotic ring heterogeneous; stipular wings with one large het- erogeneous sclerenchyma mass midwing and scattered smaller sclerenchyma patches throughout stipular wing. Adventitious roots diarch, arising singly or doubly, from leaf traces near departure from axis stele. |
Measurements
No measurements are available
No ecological data are available