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Igonoia muiri
Taxonomy
Igonoia muiri was named by Squires (2011). Its type specimen is ANSP 81350 and is a 3D body fossil. Its type locality is LACMIP loc. 23312, Martinez, which is in a Maastrichtian/Maastrichtian coastal horizon in California.
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Igonoia muiri Squires pp. 146 - 147 figs. Figures 48 – 51 |
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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.
†Igonoia muiri Squires 2011
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires 2011 | Very small-sized Igonoia with spire low, beaded subsutural rib, ramp flat, shoulder angulate and bearing two spiral ribs (beaded), subsutural area and ramp incised by prominently raised growth lines, and sides of whorls smooth. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Hendy et al. 2009 | |||||
Age range: base of the Early/Lower Maastrichtian to the top of the Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Maastrichtian - Late/Upper Maastrichtian | USA (California) | Igonoia muiri (type locality: 221990) |