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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Mourlonopsis
Taxonomy
Mourlonopsis was named by Fletcher (1958) [Sepkoski's age data: P Leon P Guad Sepkoski's reference number: 745,797].
It was assigned to Pleurotomariidae by Fletcher (1958); to Neotaenioglossa by Sepkoski (2002); and to Glabrocingulides by Wagner (2023).
It was assigned to Pleurotomariidae by Fletcher (1958); to Neotaenioglossa by Sepkoski (2002); and to Glabrocingulides by Wagner (2023).
Species
Synonymy list
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H.O. Fletcher 1958 | Medium sized turbinate pleurotomarids with a moderately high spire, five to six distinct, rounded whorls, slightly shouldered close to the upper suture; a narrow selenizone bordered by carinae, situated above the whorl periphery; sutures sharply angular and deep; base rounded, phaneromphalous; outer lip with a wide insinuation, culminating in a short slit; aperture elongate-oval, its vertical plane sloping inwards at about 35°; columella lip thick, somewhat flattened, arcuate and to some extent reflexed; ornamentation consists of striae following the line of growth and possible fine spiral lirae. Shell thin. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 23.2 | 16.0 | 30.0 | 24.0 | 4.69 | |
| shell diameter | 9 | 27.4 | 25.0 | 30.0 | 27.5 | 3.54 |
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| Source: f = family, o = order | |||||
| References: Hendy 2009, Bambach et al. 2007 | |||||
Age range: base of the Kungurian to the top of the Wuchiapingian or 279.30000 to 254.17000 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | New Zealand (Southland) | M. strzeleckiana (41776) | |
| Roadian | New Zealand (Southland) | M. strzeleckiana (41781) | |
| Roadian | Australia (Queensland) | M. sp. (105126) | |
| Roadian | Australia (New South Wales) | Mourlonia strzeleckiana (161842) | |
| Wordian | Australia (New South Wales) | Pleurotomaria strzeleckiana (133337 133342 134048 134053) | |
| Wordian | New Zealand (Southland) | M. strzeleckiana (41767 41780) | |
| Wuchiapingian | Australia (Queensland) | Mourlonia strzeleckiana (85054 107356) M. strzeleckiana (120327) |