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Araeonema osterholzensis
Taxonomy
Araeonema osterholzensis was named by Heidelberger and Amler (2002). It is a 3D body fossil. Its type locality is Oetelshofen, Dornap, Germany, which is in a Givetian/Frasnian reef, buildup or bioherm bafflestone/framestone in the "Massenkalk" Formation of Germany.
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Araeonema osterholzensis Heidelberger and Amler p. 322 figs. 9-10 |
| 2023 | Araeonema osterholzensis Wagner p. S4381 |
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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.
†Araeonema osterholzensis Heidelberger and Amler 2002
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Heidelberger and M.R.W. Amler 2002 | The features of the genus apply; adapical spiral lirae consist of numerous, very small nodes.
The preservation of the single Dornap specimen is moderate. The small, thin shell consists of five well-rounded whorls. It is 6 mm high and 5 mm wide; the whorl diameter increases slowly and regularly; the sutures are deeply incised. The aperture is simple, rounded and continuous. The convex base is anomphalus or minutely cryptomphalous, ornamented with about six fine equidistant lirae. The ornamentation of the whorls consists of about five or six equidistant spiral, somewhat nodose lirae. |
Measurements
No measurements are available
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| Source: g = genus, f = family | |||||
| References: Kiessling 2004, Wagner 2023 | |||||
Age range: base of the Late/Upper Givetian to the top of the Early/Lower Frasnian or 383.40000 to 379.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Givetian - Early/Lower Frasnian | Germany | Araeonema osterholzensis (type locality: 28047) |