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Lantianospongia palifera
Taxonomy
Lantianospongia palifera was named by Xiao et al. (2005). Its type specimen is NIGPAS-134529, an other (sponge), and it is a compression fossil. Its type locality is stone coal quarry near the village of Lantian, which is in a Meishucunian marginal marine coal in the Hetang Formation of China. It is the type species of Lantianospongia.
Synonymy list
| Year | Name and author |
|---|---|
| 2005 | Lantianospongia palifera Xiao et al. pp. 104-105 figs. 6, 7 |
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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.
†Lantianospongia palifera Xiao et al. 2005
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Xiao et al. 2005 | Same as for genus.
Ovoidal skeletal net 100–300 mm high and 80–150 mm wide. Basal end rounded. Lower part consists of conspicuous, probably bundled mon- acts/diacts that are diagonally oriented. Oscular margin serrated. There are at least 4 serrations, separated by indentations, on oscular margin. Neighboring serration apices are about 50 mm apart. Serration apices stand about 15 mm above the base of indentations. Each serration is subtended by a group of bundled monacts or diacts that extend downward about one-third of sponge height. Parietal gaps circular or elliptical, between 5 and 15 mm in maximum diameter (mean=8.4 mm, N=20) and spaced at 15–20 mm apart. They tend to be concentrated in the upper part of the sponge. Basal diagonal monacts/diacts and oscular supporting monacts/diacts can be 50–100 mm in length and are organized in bundles of 0.8–1.5 mm in diameter. Much smaller diacts, about 0.15 mm in diameter and 15 mm in length, occur sporadically on the skeletal net. Most stauracts in tracts have ray diameters of 0.04–0.08 mm and ray length of 0.5–1.5 mm. Larger stauracts (about 0.2–0.25 mm in ray diameter and 1.5–2 mm in ray length) sporadically occur in tracts. Most parietal gaps are void of spicules, but a few stauracts can occur in some parietal gaps although their density is much lower than in the tracts. This is probably because of the same sponge wall superimposed on itself as a result of compression. |