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Pentzia hilgardi
Taxonomy
Fulgur hilgardi was named by White (1889). It is a 3D body fossil. Its type locality is USGS loc. 405, Pentz Area, which is in a Campanian coastal siliciclastic in the Chico Formation of California.
It was recombined as Eripachya hilgardi by Cossmann (1901); it was recombined as Pentzia hilgardi by Squires and Saul (2003).
It was recombined as Eripachya hilgardi by Cossmann (1901); it was recombined as Pentzia hilgardi by Squires and Saul (2003).
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Fulgur hilgardi White p. 22 figs. pl. 3, figs. 2, 3 |
| 1901 | Eripachya hilgardi Cossmann p. 147 |
| 2003 | Pentzia hilgardi Squires and Saul pp. 57 - 58 figs. 3.7-3.16 |
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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.
†Pentzia hilgardi White 1889
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Squires and L. R. Saul 2003 | Shell up to 37 mm in height; pyriform; spire low conical, forming about one-third of total height; pleural angle 70 degrees; protoconch (partially preserved) low, rounded, domal, smooth; whorls approximately five, convex except for concave ramp; suture undulatory and, on adults, rimmed anteriorly by low subsutural collar; earliest two whorls smooth; spiral sculpture of raised, strong cords, flat on top with interspaces equal in width or about one-half as wide; one spiral row of nodes near anterior suture of earlier spire whorls; two spiral rows of nodes on periphery of body whorl; ramp with only nonnodose spiral threads on specimens less than 20 mm in height, spiral sculpture weak to obsolete on ramp on larger specimens; earlier spire whorls with collabral riblets extending from suture to suture; aperture elliptical with a posterior notch; siphonal canal long and smooth; siphonal canal somewhat bent to left in adults; columella smooth with thin callus; growth lines opisthocline. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Early/Lower Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma
Collections (21 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Campanian | USA (Washington) | Pentzia hilgardi (86868) | |
| Early/Lower Campanian | USA (California) | Fulgur hilgardi (185171 185172 239772) Pentzia hilgardi (3890 69310 210584) | |
| Late/Upper Campanian | USA (California) | Fulgur hilgardi (1523 1526 1548 72057 86793 86794 214144 219077 220906) | |
| Middle Campanian | USA (California) | Fulgur hilgardi (144764 219079 220908) | |
| Middle Campanian | USA (Washington) | Pentzia hilgardi (220314) | |
| Early/Lower Maastrichtian | USA (California) | Fulgur hilgardi (1545) |