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Malayaspira hintzei
Taxonomy
Malayaspira hintzei was named by Rohr (1994). Its type specimen is USNM 473952;, a shell, and it is a 3D body fossil.
It was recombined as Ecculiomphalus hintzei by Wagner (1999).
It was recombined as Ecculiomphalus hintzei by Wagner (1999).
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Malayaspira hintzei Rohr p. 484 figs. 6.20-6.27 |
| 1999 | Ecculiomphalus hintzei Wagner |
| 2001 | Malayaspira hintzei Rohr and Measures p. 291 |
| 2023 | Malayaspira hintzei Wagner p. 762 |
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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.
†Malayaspira hintzei Rohr 1994
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. M. Rohr 1994 | Discoidal, loosely coiled, base slightly convex; widely umbilicate, hyperstrophic shells with a rounded-square cross section with angulations present at upper-inner edge, upper- outer edge, and lower-outer edge, and a weaker angulation at upper-inner edge; slightly opisthocyrt growth lines strongly developed on base of shell, growth lines on both sides of upper shell surface strongly opisthocline meeting to form a V at crest of whorl.
Discoidal, loosely coiled, widely umbilicate, hyperstrophic shells as large as 4.5 cm in diameter; three spiral angulations present at upper-inner edge, upper-outer edge, and lower-outer edge, and a weaker angulation at upper-inner edge; whorl surface curves concavely downward from upper-outer angulation to upper-inner angulation, and then convexly into deeply impressed suture; outer whorl surface nearly planar, sloping at about 60 degrees to lower-outer angulation; very shallow spiral indentation about one-third the distance down outer whorl surface; base of whorl broadly convex, basal suture shallow; entire base slightly convex; slightly opisthocyrt growth lines strongly developed on base of shell, becoming much more closely spaced in later growth stages; growth lines on both sides of upper shell surface strongly opisthocline meeting to form a V at crest of whorl; grooves corresponding to lower-inner, lower outer, and crestal angulations continue into interior of shell; upper-inner angulation stronger and slightly higher in younger growth stages producing a nearly square profile. |
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Knight et al. 1960, Kiessling 2004 | |||||
Age range: Whiterockian or 471.30000 to 457.30000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Whiterockian | USA (Nevada) | Malayaspira hintzei (14229 14238 14241 104435 104449) |