zosterophylls造句

• The genus was tentatively placed in the " zosterophylls ".
• It is thought to be related to the zosterophylls.
• The remains are very fragmentary, but the plant appears to be related to the zosterophylls.
• It is aligned with the Zosterophylls, and produced " Calamospora "-type spores.
• El-Saadawy and Lacy regard the plant as having affinities with both the rhyniophytes and the zosterophylls.
• Note the " Cooksonia "-like plants and zosterophylls are a paraphyletic grade of stem group Lycopodiophytes.
• Zosterophylls are thought to be the earliest diverging group of lycophytes, a group which includes modern clubmosses and relatives.
• Some features, such as bivalved sporangia borne laterally and the anatomy of the xylem, relate this genus to the zosterophylls.
• The emergences were formed by existing cells expanding, not by extra cells being produced as in other Early Devonian zosterophylls and trimerophytes.
• The zosterophylls were named after the aquatic flowering plant " Zostera " from a mistaken belief that the two groups were related.
• The shape of the sporangia and their lateral position as well as the anatomy of the xylem show a clear relationship to the zosterophylls.
• Earlier, El Saadawy and Lacey had concluded that " Nothia " was in some ways intermediate between the rhyniophytes and the zosterophylls.
• ""'Adoketophyton " "'is a Cladistic analysis suggests that it is a lycophyte, related to the zosterophylls.
• As is typical of zosterophylls, they split to release their spores via a linear opening at the opposite end to their attachment to the stem.
• The position of the sporangia on the sides of stems and the way in which they split to release spores suggests a relationship with the zosterophylls.
• Those who treat most of the extant groups of plants as divisions may raise both the zosterophylls and the Lycophytina sensu Banks to the rank of division:
• However, this group is defined as having terminal sporangia, whereas those of " Huia " are lateral, suggesting affinity with the zosterophylls.
• Under whatever name and rank, the zosterophylls have been divided into families, e . g . the Zosterophyllales containing the Zosterophyllaceae and the Sawdoniales containing the Sawdoniaceae.
• Features of the vascular tissue of typical zosterophylls, such as characteristic thickenings of the cells which conduct water, are also absent in " Nothia ".
• It falls outside the core clade of zosterophylls ( Zosterophyllopsida sensu Kenrick & Crane ), whose members have sporangia arranged in two rows and new growths with coiled tips.