| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Microceratina
From its overall shape, hingement, and the form of its duplicature there seems to be no doubt that Microceratina is a bythocytherinid genus.
Examination of many specimens for well defined muscle scars has, however, proved rather unfruitful. The description of the muscle scar is the best I can
give, but I am doubtful about the two scars directly below the dorsalmost adductor scar. The variability of these two scars indicates either that the dorsalmost scar has almost completely fused with the smaller scar beneath, or that they represent a modified single adductor scar; the latter would make the adopted classification questionable.
| Year | Name and author |
|---|---|
| 1980 | Microceratina Swanson p. 205 |
| 2024 | Microceratina Ceolin et al. p. 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.
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| Source: o = order, c = class | |||||
| References: Jell and Adrain 2002, Kiessling 2004 | |||||
Age range: Late/Upper Maastrichtian or 72.20000 to 66.00000 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | Argentina (Río Negro) | M. sp. 1 (234206 234212 234213) M. sp. 1, M. sp. 2 (234202) M. sp. 2 (234205 234214 234215) |