| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Monotis (Eomonotis) daonellaeformis was named by Kiparisova (1960). It is not extant. Its type specimen is Specimen No. 97/4039, Central Geological Research Museum (TsNIGR).
It was synonymized subjectively with Monotis (Eomonotis) scutiformis by Grant-Mackie (1978).
It was synonymized subjectively with Monotis (Eomonotis) scutiformis by Grant-Mackie (1978).
Sister species lacking formal opinion data
Eomonotis multicostata, M. anjanensis, M. anjensis, M. aries, M. caucasica, M. densistriata, M. jacutica, M. kiritehereensis, M. landerensis, M. mokaui, M. multicostata, M. ochotica, M. ochotica, M. ochotica, M. ochotica, M. ochotica, M. ochotica, M. ochotica, M. ochotica, M. pachypleura, M. pachypleura, M. planocostata, M. rhaetica, M. scutiformis, M. scutiformis, M. subcircularis, M. subcircularis, M. taringatura, M. yakutica, M. baoqingensis, M. ochotica, M. ochotica, M. ochotica, M. subcycloidea, M. maniapotoi, M. discordans, M. subcircularis
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Monotis (Eomonotis) daonellaeformis Kiparisova |
| 1997 | Monotis (Eomonotis) daonellaeformis Silberling et al. |
| 2011 | Monotis (Eomonotis) daonellaeformis McRoberts p. 641 |
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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.
†Monotis (Eomonotis) daonellaeformis Kiparisova 1960
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. J. Silberling et al. 1997 | Medium size (up to 40 mm long). Shape transversely oval, with anterodorsal margin projecting dorsally above the projection of the hingeline. Beaks inconspicuous and valves of subequal, low inflation. Postumbonal length 1.5–2.0 times preumbonal length. Sculpture of about 30 prominent, rounded, primary radial ribs; secondary ribs
much weaker, inserted at about half valve height. Anterior ribs, and sometimes also posterior ribs, curve dorsally. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range: Alaunian or 215.38000 to 211.18000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Lacian - Alaunian | Russian Federation (Primorskiy Kray) | Eomonotis daonellaeformis (97824) | |
| Norian | USA (Alaska) | Monotis daonellaeformis (85134 140038) | |
| Alaunian | Canada (British Columbia) | Eomonotis daonellaeformis (115123) | |
| Alaunian | Russian Federation | Monotis daonellaeformis (69441) |