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Chenopus (Maussenetia)
Taxonomy
Aporrhais (Maussenetia) was named by Cossmann (1904) [Sepkoski's age data: T Than T Eo-m-l Sepkoski's reference number: 1074]. Its type is Aporrhais (Maussenetia) staadti.
It was Chenopus (Maussenetia) by Cossmann and Pissaroo (1909); it was reranked as Maussenetia by Roy (1994), Sepkoski (2002) and Bandel (2007).
It was assigned to Aporrhais by Cossmann and Pissarro (1904); to Chenopus by Cossmann and Pissaroo (1909); to Aporrhaidae by Roy (1994); to Neotaenioglossa by Sepkoski (2002); and to Wateletinae by Bandel (2007).
It was Chenopus (Maussenetia) by Cossmann and Pissaroo (1909); it was reranked as Maussenetia by Roy (1994), Sepkoski (2002) and Bandel (2007).
It was assigned to Aporrhais by Cossmann and Pissarro (1904); to Chenopus by Cossmann and Pissaroo (1909); to Aporrhaidae by Roy (1994); to Neotaenioglossa by Sepkoski (2002); and to Wateletinae by Bandel (2007).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1904 | Aporrhais (Maussenetia) Cossmann |
| 1904 | Aporrhais (Maussenetia) Cossmann and Pissarro p. 71 |
| 1909 | Chenopus (Maussenetia) Cossmann and Pissaroo |
| 1994 | Maussenetia Roy p. 295 |
| 2002 | Maussenetia Sepkoski |
| 2007 | Maussenetia Bandel p. 136 |
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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.
Subg. †Chenopus (Maussenetia) Cossmann 1904
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†Chenopus (Maussenetia) dimorphospira Cossmann and Pissarro 1909
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. Bandel 2007 | The conical spire is ornamented by spiral ribs of which the median forms a weak keel on the rounded whorls with distinct sutures. The outer lip is wing-like and expanded to connect to the spire almost to its top. Its general shape resembles that in Wateletia with rounded median lobe and a posterior spine, which in contrast is free of the spire. Also the margin of the large lobe has short spikes. The lobe continues to the tubelike siphon forming a sinus at its inner margin. The callus of the inner lip forms a narrow ribbon that continues as ridge onto the spire and forms a cleft between it and the inner side of the outer lip, as is characteristic to the Hippochrenidae. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: Thanetian or 59.20000 to 56.00000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paleocene | Niger | Rostellaria goniophora (97596) | |
| Selandian - Thanetian | Mali | Rostellaria goniophora (83984) | |
| Thanetian | Niger | Chenopus dimorphospira (83985) |