Zyzzya sp.
publication ID |
https://doi.org/ 10.4202/app.00612.2019 |
persistent identifier |
https://treatment.plazi.org/id/AE74871F-B877-B720-FCF7-FF09FC58FCD8 |
treatment provided by |
Felipe |
scientific name |
Zyzzya sp. |
status |
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Fig. 6P–R View Fig .
Material.—Upper Eocene, south-central Ukraine.
Remarks. —The verticillate acanthostrogyles ( Fig. 6Q, R View Fig ) and acanthostrongyle ( Fig. 6P View Fig ) can be assigned to one of the species of Zyzzya . Five species are currently distinguished within this genus ( van Soest et al. 2018). Amongst them, Z. fuliginosa ( Carter, 1879) is characterized by presence of both these spicule types (compare van Soest et al. 1994: figs. 19, 20). The length of the acanthostrongyles found in modern Z. fuliginosa is up to 250 μm (see van Soest et al. 1994: table 2), while the fossil spicule is 165 μm long, thus falling within the range observable in that taxon. There are also some other spicules of similar morphology ( Fig. 5U). However, contrary to the verticillate acanthostrongyles of Zyzzya , these spicules are strongly sculptured also at the tips. Such morphology makes their attribution to Acarnidae less likely.
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