| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Divisulcus
Taxonomy
Divisulcus was named by Smith (2013). Its type is Divisulcus demerei.
It was assigned to Panalcidae by Smith (2013).
It was assigned to Panalcidae by Smith (2013).
Species
D. demerei (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2013 | Divisulcus Smith p. 79 figs. Figure 2 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| N. A. Smith 2013 | Divisulcus demerei is differentiated from all
other Pan-Alcidae by having the scapulotricipital sulcus of the distal humerus bifurcated lengthwise (i.e., proximodistally) by a crest (Fig. 2). This character is an autapomorphy of D. demerei and is not known in any other avian taxon. Additionally, the humeral shaft is dorsoventrally compressed to a lesser degree than in all other pan-alcids (Fig. 3), and D. demerei is smaller than all other known pan-alcids (Table 1) |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Bush and Bambach 2015, Benton 1983, Marsh 1875 | |||||
Age range: Langhian or 15.97000 to 13.82000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Burdigalian - Langhian | Mexico (Baja California) | D. demerei (197288) | |
| Langhian | Mexico (Baja California) | D. demerei (141536) |