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Praepleurocystis watkinsi
Taxonomy
Pleurocystites watkinsi was named by Strimple (1948). Its type specimen is USNM 4640 and is a 3D body fossil. Its type locality is Bromide Formation, Rock Crossing, Criner Hills, Carter County, Oklahoma, which is in the Blackriveran of horizon the Bromide Formation Oklahoma.
It was recombined as Praepleurocystis watkinsi by Paul (1967) and Parsley (1982).
It was recombined as Praepleurocystis watkinsi by Paul (1967) and Parsley (1982).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1948 | Pleurocystites watkinsi Strimple pp. 761- 764 figs. pl. a, fig. 1-3 |
| 1967 | Praepleurocystis watkinsi Paul p. 120 |
| 1974 | Praepleurocystis nodosus Westphal pp. 80- 81 figs. pl. 1, fig. 8-11, text-fig. 2, 3 |
| 1982 | Praepleurocystis watkinsi Parsley pp. 275 - 279 figs. Plate 34, figures 1, 5, 7, 9-11, 13-19; Figures 67, 68 |
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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.
†Praepleurocystis watkinsi Strimple 1948
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Invalid names: Praepleurocystis nodosus Westphal 1974 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. H. Parsley 1982 | Theca nearly bilaterally symmetrical in outline; anal surface with broad "marginal" plates; periproctal area reduced; rectal lobe only slightly extended; plate 06 present; IL1 and IL3 transversely attaining periproctal margin; dorsal surface markedly convex, with 3 oval, elevated, disjunct pectinirhombs with confluent dichopores. |
Measurements
No measurements are available
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| Source: o = order, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Age range: base of the Middle Ordovician to the top of the Ashbyan or 470.00000 to 449.60000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Ordovician | USA (Oklahoma) | Praepleurocystis watkinsi (179624) | |
| Ashbyan | USA (Tennessee) | Pleurocystites watkinsi (195569) | |
| Blackriveran | USA (Oklahoma) | Pleurocystites watkinsi (24097 type locality: 37987) Praepleurocystis watkinsi (73277 195568) | |
| Blackriveran | USA (Wisconsin) | Praepleurocystis nodosus (195567) |