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Petrozium mcallisteri
Taxonomy
Petrozium mcallisteri was named by Merriam (1973). Its type specimen is USNM 159411 and is a 3D body fossil. Its type locality is USGS Paleozoic loc. M1111, Last Chance Range, which is in a Wenlock carbonate dolomite in the Hidden Valley Dolomite Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Petrozium mcallisteri Merriam p. 48 figs. Plate 9, figures 6-10 |
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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.
†Petrozium mcallisteri Merriam 1973
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1973 | Petrozium with major septa slightly thickened peripherally, tapering to very thin where meeting axially. Septa have minute zigzag features. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||