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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Plesiospitidiscus subdifficilis
Taxonomy
Desmoceras subdifficile was named by Karakasch (1907).
It was recombined as Plesiospitidiscus subdifficilis by Cecca et al. (1998).
It was recombined as Plesiospitidiscus subdifficilis by Cecca et al. (1998).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1907 | Desmoceras subdifficile Karakasch |
| 1998 | Plesiospitidiscus subdifficilis Cecca et al. p. 73 figs. Pl 2, figs 1-4; text-fig 6e, 7 |
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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.
†Plesiospitidiscus subdifficilis Karakasch 1907
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 6 | 15.3 | 9.00 | 24.0 | 16.8 | 6.27 | |
| shell diameter | 6 | 33.3 | 20.0 | 48.0 | 37.8 | 11.9 | |
| shell inflation | 6 | 5.90 | 3.00 | 9.50 | 7.00 | 2.88 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Hauterivian or 136.40000 to 130.00000 Ma
Collections (25 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Hauterivian | Hungary | Plesiospitidiscus subdifficilis (61566) | |
| Late/Upper Hauterivian | Spain | Plesiospitidiscus subdifficilis (61522 61523 61525 61526 61527 61529 61531 61534 61535 61536 61538 61539 61541) | |
| Late/Upper Hauterivian | Tunisia | Plesiospitidiscus subdifficilis (205694 205696 205697 205701 205702 205703) | |
| Late/Upper Hauterivian | Italy | Plesiospitidiscus subdifficilis (168437 168438 168439 168442 168444) |