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Xenosteges adherens
Taxonomy
Xenosteges adherens was named by Muir-Wood and Cooper (1960). Its type specimen is USNM 124128b and is a 3D body fossil. Its type locality is USNM702, Split Tank, Glass Mountains, which is in a Kungurian reef, buildup or bioherm limestone in the Cathedral Mountain Formation of Texas. It is the type species of Xenosteges.
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Xenosteges adherens Muir-Wood and Cooper p. 112 figs. Pl 10, figs 1-13 |
| 1975 | Xenosteges adherens Cooper and Grant p. 855 figs. Pl 232, figs 1-48; pl 233, fig 40; pl 234, figs 28-32 |
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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.
†Xenosteges adherens Muir-Wood and Cooper 1960
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 17 | 4.32 | 1.90 | 5.90 | 4.50 | 1.14 |
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| Source: subo = suborder, c = class, p = phylum, uc = unranked clade | |||||
| References: Williams et al. 2000, Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Kungurian or 279.30000 to 272.30000 Ma
Collections (30 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | USA (Texas) | Xenosteges adherens (43459 43466 type locality: 43491 43492 43494 43501 43504 43510 43514 43515 43516 43582 44519 44565 81638 81644 81944 101785 101811 105687 105746 105843 105849 105884 105906 105931 105935 105938 105981 106164) |