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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Equijubus
Taxonomy
Equijubus was named by You et al. (2003).
It was assigned to Hadrosauriformes by You et al. (2005); to Styracosterna by Norman (2004), Galton (2009); to Iguanodontoidea by Paul (2008), Amiot et al. (2010); to Hadrosauroidea by You et al. (2003), Godefroit et al. (2004), McDonald et al. (2010), McDonald et al. (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010), Ramírez-Velasco et al. (2012); to Neoiguanodontia by Norman (2014); and to Hadrosauroidea by Prieto-Márquez (2010), Prieto-Márquez (2010), Wang et al. (2011), McDonald (2012), McDonald et al. (2014), Cruzado-Caballero and Powell (2017), Wu et al. (2018), You et al. (2019), Verdú et al. (2021).
It was assigned to Hadrosauriformes by You et al. (2005); to Styracosterna by Norman (2004), Galton (2009); to Iguanodontoidea by Paul (2008), Amiot et al. (2010); to Hadrosauroidea by You et al. (2003), Godefroit et al. (2004), McDonald et al. (2010), McDonald et al. (2010), Prieto-Marquez and Salinas (2010), Prieto-Márquez and Wagner (2010), Ramírez-Velasco et al. (2012); to Neoiguanodontia by Norman (2014); and to Hadrosauroidea by Prieto-Márquez (2010), Prieto-Márquez (2010), Wang et al. (2011), McDonald (2012), McDonald et al. (2014), Cruzado-Caballero and Powell (2017), Wu et al. (2018), You et al. (2019), Verdú et al. (2021).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2003 | Equijubus You et al. p. 348 fig. 3 |
| 2004 | Equijubus Godefroit et al. p. 149 |
| 2004 | Equijubus Norman p. 434 |
| 2005 | Equijubus You et al. p. 789 fig. 4 |
| 2008 | Equijubus Paul p. 201 |
| 2009 | Equijubus Galton p. 215 |
| 2010 | Equijubus Amiot et al. p. 354 |
| 2010 | Equijubus McDonald et al. p. 33 fig. 39 |
| 2010 | Equijubus McDonald et al. p. 808 fig. 10 |
| 2010 | Equijubus Prieto-Marquez and Salinas p. 835 fig. 20 |
| 2010 | Equijubus Prieto-Márquez p. 5 fig. 2 |
| 2010 | Equijubus Prieto-Márquez and Wagner p. 1243 fig. 3 |
| 2011 | Equijubus Wang et al. p. 155 fig. 11 |
| 2012 | Equijubus McDonald p. 2 |
| 2012 | Equijubus Ramírez-Velasco et al. p. 392 |
| 2014 | Equijubus McDonald et al. p. 46 |
| 2014 | Equijubus Norman p. 37 fig. 2.30 |
| 2017 | Equijubus Cruzado-Caballero and Powell p. 12 fig. 13 |
| 2018 | Equijubus Wu et al. p. 724 |
| 2019 | Equijubus You et al. p. 4 |
| 2021 | Equijubus Verdú et al. p. 10 fig. 9 |
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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 | |
|---|---|---|
| G. S. Paul 2008 | As for the type and only known species. | |
| A. T. McDonald et al. 2014 | For genus and species by monotypy. Characters derived from the original diagnosis of You, Luo, et al. (2003) are marked with an asterisk (*). Basal hadrosauroid characterized by four autapomorphies: (1), rostrodorsally curved finger-like process that arises from the maxillary process of the jugal at the jugal-lacrimal contact*; (2), elongate rostral ramus of lacrimal that extends along the dorsal margin of the maxilla and terminates rostral to the apex of the ascending process of the maxilla*; (3), epipophyses present on third cervical vertebra; and (4), hyposphene present on at least dorsal vertebrae 6–8 and 11–15. Also distinguished by the following unique combination of characters: rostral ramus of lacrimal tapers to a point, ventrolateral process of premaxilla contacts prefrontal (also noted by Paul, 2008:201, as lack of contact between the lacrimal and nasal); quadrate gradually curves caudally along its entire length in lateral view (also noted by Paul, 2008:201, as “shaft nearly straight”); and convex dorsal margin of ilium (also noted by Carpenter and Ishida, 2010). |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| References: Benton 1983, Kiessling 2004, Marsh 1875 | |||||
Age range: Early/Lower Albian or 113.20000 to 110.10000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Albian | China (Gansu) | Iguanodontidae indet. (45413) |