| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Protoceratopsidovum
Taxonomy
Protoceratopsidovum was named by Mikhailov (1994). It is considered to be a form taxon.
It was assigned to Prismatoolithidae by Mikhailov (1994), Zelenitsky and Hills (1996), Mikhailov (1996), Mikhailov (1997), Ariunchimeg (1997), Mikhailov (2000), Cousin (2002), Moreno-Azanza et al. (2014), Wang et al. (2018), Tanaka et al. (2023).
It was assigned to Prismatoolithidae by Mikhailov (1994), Zelenitsky and Hills (1996), Mikhailov (1996), Mikhailov (1997), Ariunchimeg (1997), Mikhailov (2000), Cousin (2002), Moreno-Azanza et al. (2014), Wang et al. (2018), Tanaka et al. (2023).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1994 | Protoceratopsidovum Mikhailov p. 104 |
| 1996 | Protoceratopsidovum Mikhailov p. 246 |
| 1996 | Protoceratopsidovum Zelenitsky and Hills p. 1128 |
| 1997 | Protoceratopsidovum Ariunchimeg p. 13 |
| 1997 | Protoceratopsidovum Mikhailov p. 59 |
| 2000 | Protoceratopsidovum Mikhailov p. 567 |
| 2002 | Protoceratopsidovum Cousin p. 40 |
| 2014 | Protoceratopsidovum Moreno-Azanza et al. p. 847 |
| 2018 | Protoceratopsidovum Wang et al. p. 267 |
| 2023 | Protoceratopsidovum Tanaka et al. p. 192 |
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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. †Protoceratopsidovum Mikhailov 1994
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†Protoceratopsidovum fluxuosum Mikhailov 1994
†Protoceratopsidovum minimum Mikhailov 1994
†Protoceratopsidovum sincerum Mikhailov 1994
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| K. E. Mikhailov 1994 | Angusticanaliculate eggshell of prismatic morphotype. Greatly elongated eggs (El > 2) with smooth surface or fine ornamentation of linear-tubercular type in equatorial part; poles not sculptured and bearing no impressions of ornament. | |
| K. E. Mikhailov 1997 | Elongated eggs (El = 2.2-2.5) with slightly asymmetrical poles. Surface is smooth, or fine linearituberculate ornamentation present in equatorial portion of egg. Poles of eggs always lack ornamentation. Angusticanaliculate pore system comprised of single pore canals with circular pores on the egg surface. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Marsh 1875, Kiessling 2004 | |||||
Age range: base of the Cenomanian to the top of the Late/Upper Campanian or 100.50000 to 72.20000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cenomanian - Santonian | Mongolia (Dornogov) | Dinosauria indet. (127665) P. minimum (108342) | |
| Late/Upper Campanian | Mongolia (Omnogov) | Protoceratopsidae indet. (204819) P. fluxuosum, Protoceratopsidae indet. (53229) P. sincerum, P. minimum (118259) P. sp. (127668 127678) | |
| Middle Campanian - Late/Upper Campanian | Mongolia (Dornogov) | P. minimum (65338) P. sincerum, P. minimum (65327) | |
| Middle Campanian - Late/Upper Campanian | Mongolia (Omnogov) | P. minimum, P. fluxuosum (27009) P. sincerum, Protoceratopsidae indet. (11582) |