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Petrozium staufferi
Taxonomy
Petrozium staufferi was named by Merriam (1972). Its type specimen is USNM 159458 and is a 3D body fossil. Its type locality is USGS loc. M191, Bonnet Rock, Klamath Mountains, which is in a Ludlow reef, buildup or bioherm limestone in the Gazelle Formation of California.
Synonymy list
| Year | Name and author |
|---|---|
| 1972 | Petrozium staufferi Merriam pp. 37 - 38 figs. Plate 7, figures 1-6 |
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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 staufferi Merriam 1972
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1972 | Petrosium with fairly compact phaceloid growth habit, forms heads more than one foot in diameter. Corallites slender. Septa non-carinate; longer septa extend to axis where some join but do not form a discrete axial structure. Wall thin, without continuous stereozone. Dissepimentarium narrow, commonly in two columns; peripheral dissepiments nearly horizontal. Some of the wide strongly uparched tabulae nearly complete. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Ludlow or 426.70000 to 422.70000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wenlock - Pridoli | USA (California) | Diphyphyllum fasciculum (214346) | |
| Ludlow | USA (California) | Petrozium staufferi (type locality: 79733 229579) |