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Zhangheotherium
Taxonomy
Zhangheotherium was named by Hu et al. (1997). It is not extant. Its type is Zhangheotherium quinquecuspidens.
It was assigned to Mammalia by Luo et al. (2001); to Spalacotherioidea by Averianov (2002) and Li and Luo (2006); to Spalacotheriidae by Hu et al. (1997), Kielan-Jaworowska et al. (2004) and Zhou and Wang (2010); to Zhangheotheriidae by Han and Meng (2016); and to Mammalia by Velazco et al. (2022).
It was assigned to Mammalia by Luo et al. (2001); to Spalacotherioidea by Averianov (2002) and Li and Luo (2006); to Spalacotheriidae by Hu et al. (1997), Kielan-Jaworowska et al. (2004) and Zhou and Wang (2010); to Zhangheotheriidae by Han and Meng (2016); and to Mammalia by Velazco et al. (2022).
Species
Z. quinquecuspidens (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Zhangheotherium Hu et al. pp. 137-140 figs. 1-4 |
| 2001 | Zhangheotherium Luo et al. pp. suppl. p. 9 |
| 2002 | Zhangheotherium Averianov p. 714 |
| 2004 | Zhangheotherium Kielan-Jaworowska et al. pp. 345, 368 figs. 9.2, 9.3C, 9.4, 9.10D |
| 2006 | Zhangheotherium Li and Luo p. 197 |
| 2010 | Zhangheotherium Zhou and Wang |
| 2016 | Zhangheotherium Han and Meng |
| 2022 | Zhangheotherium Velazco et al. |
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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. †Zhangheotherium Hu et al. 1997
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†Zhangheotherium quinquecuspidens Hu et al. 1997
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Y. Hu et al. 1997 | A spalacotheriid symmetrodont with the dental formula 3-1-2-5/3-1-2-6; differing from all other known symmetrodonts in having a hypertrophied cusp B' etween the main cusp A and the stylocone (cusp B); distinguishable from other spalacotheriids in the conical shape of the main cusps and the lack of lingual and labial cingulids on the lower molars;.... |
Measurements
No measurements are available
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| Source: g = genus, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988, Ji et al. 2002, Hopson 1973, Luo et al. 2003 | |||||
Age range: base of the Late/Upper Barremian to the top of the Early/Lower Aptian or 130.00000 to 122.46000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Barremian - Early/Lower Aptian | China (Liaoning) | Z. quinquecuspidens (10761 49106) |