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Rionegrophis madtsoioides
Taxonomy
Rionegrophis madtsoioides was named by Albino (1986). Its type specimen is MACN-RN 32, a set of vertebrae (median trunk vertebra), and it is a 3D body fossil. Its type locality is Los Alamitos vertebrates, middle section, which is in a Campanian/Maastrichtian lacustrine - large siltstone/sandstone in the Los Alamitos Formation of Argentina. It is the type species of Rionegrophis.
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Rionegrophis madtsoioides Albino p. 18 |
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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.
†Rionegrophis madtsoioides Albino 1986
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. M. Albino 1986 | "Probable Madtsoiinae con vértebras de tamaño bastante grande, de centro vertebral muy corto, ancho y triangular. La carena hemal es delgada y está limitada pro leves depresiones lateralesl el zigósfeno es robusto. Con formaen paracotylar." (pg. 19) |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Carroll 1988, Hendy et al. 2009 | |||||
Age range: Early/Lower Maastrichtian or 70.60000 to 66.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian - Early/Lower Maastrichtian | Argentina (Río Negro) | Rionegrophis madtsoioides (type locality: 45087) | |
| Early/Lower Maastrichtian | Argentina (Santa Cruz) | Rionegrophis madtsoioides (206967) |