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Cyrtosymbolina
Taxonomy
Cyrtosymbolina was named by Basse and Lemke (2011). Its type is Cyrtosymbolina nieensis.
It was assigned to Cyrtosymbolinae by Basse and Lemke (2011).
It was assigned to Cyrtosymbolinae by Basse and Lemke (2011).
Species
C. nieensis (type species), C. varica
Synonymy list
| Year | Name and author |
|---|---|
| 2011 | Cyrtosymbolina Basse and Lemke p. 62 |
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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.
G. †Cyrtosymbolina Basse and Lemke 2011
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†Cyrtosymbolina nieensis Basse and Lemke 2011
†Cyrtosymbolina varica Alberti 1976
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Basse and U. Lemke 2011 | Cyrtosymbolinae with following diagnostically relevant features: Preglabellar field rather long (sag.). Rostral plate expanded trigonal in outline. Anterior border furrow of cranidium weakly bent (tr.). Outline of glabella projectile-like, lateral margin slightly and regularly bent, opposite of γ not incised. Anterior branch of facial suture moderately strongly diverging forwards. β slightly outside projection of exsagittal tangent through distal point of ocular area. Teat-like palpebral lobes very short (tr.). ε far away from posterior border furrow. Portion ε/ζ sligthly diverging backwards, and longer than exsagittal line connecting γ and ε. Librigenal field very wide (tr.). Stout librigenal spine rather short. Pygidium semicircular in outline. Rachis with 7 to/ or 8 (9?) rings. Postrachial field very long (sag.). |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997, Fortey and Owens 1999 | |||||
Age range: Early/Lower Famennian or 376.10000 to 370.60000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Famennian | Morocco | Cyrtosymbole varica (229233) | |
| Early/Lower Famennian | Germany (Nordrhein-Westfalen) | C. nieensis (229232) |