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Boreostemma
Taxonomy
Boreostemma was named by Carlini et al. (2008). Its type is Boreostemma pliocena. It was considered monophyletic by Carlini et al. (2008).
It was assigned to Glyptodontinae by Carlini et al. (2008).
It was assigned to Glyptodontinae by Carlini et al. (2008).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Boreostemma Carlini et al. p. 142 |
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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. †Boreostemma Carlini et al. 2008
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†Boreostemma acostae Villarroel 1983
†Boreostemma gigantea Carlini et al. 1997
†Boreostemma pliocena Carlini et al. 2008
†Boreostemma venezolensis Simpson 1947
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| Cephalic armor diameter | 2 | 93.7 | 79.8 | 110.0 | 94.9 | 21.3 | |
| Mandible height | 4 | 45.0 | 32.5 | 55.5 | 50.4 | 12.1 | |
| Mandible diameter | 4 | 63.6 | - | - | 63.6 | - | |
| Skull height | 4 | 27.3 | - | - | 27.3 | - | |
| Skull diameter | 4 | 44.3 | 35.6 | 56.4 | 44.4 | 10.3 |
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| Source: o = order, subc = subclass, c = class, subp = subphylum | |||||
| References: Lillegraven 1979, Carroll 1988, Nowak 1999, Ji et al. 2002, Hendy et al. 2009 | |||||
Age range: base of the Laventan to the top of the Late/Upper Pliocene or 13.80000 to 2.58800 Ma
Collections (26 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Miocene | Colombia | Asterostemma gigantea (13758) | |
| Middle Miocene | Venezuela (Anzoategui) | Asterostemma venezolensis (145509) | |
| Laventan | Peru (Ucayali) | B. sp. (144792 144793 163840) | |
| Laventan | Colombia (Huila) | Asterostemma acostae (139894) B. acostae (146527 188086 188254 188255 188256 188257 188258 188259 188260 188261 188262 188263 188264 197211) | |
| Laventan | Colombia | Asterostemma gigantea (13686 13750 13754 13757) | |
| Messinian - Zanclean | Venezuela (Falcon) | B. pliocena (114473) | |
| Late/Upper Pliocene | Venezuela (Falcon) | B. sp. (122033) |