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Yaverlandia
Taxonomy
Yaverlandia was named by Galton (1971). Its type is Yaverlandia bitholus.
It was assigned to Homalocephaleridae by Dong (1978); to Pachycephalosauridae by Galton (1971), Maryańska and Osmólska (1974), Thulborn (1974), Galton (1974), Galton (1975), Wall and Galton (1979), Molnar (1980), Sues and Galton (1987), Carroll (1988), Hutt et al. (1989), Maryanska (1990), Le Loeuff (1991), Olshevsky and Ford (1994) and Blows (1998); to Pachycephalosauria by Norman (1997), Buffetaut (1997), Sereno (2000) and Ruiz-Omeñaca and Canudo (2003); to Pachycephalosauria by Dodson (1990), Williamson and Carr (2003), Maryanska et al. (2004) and Williamson and Carr (2006); to Maniraptora by Naish and Martill (2008); and to Theropoda by Sullivan (2006) and Butler and Sullivan (2009).
It was assigned to Homalocephaleridae by Dong (1978); to Pachycephalosauridae by Galton (1971), Maryańska and Osmólska (1974), Thulborn (1974), Galton (1974), Galton (1975), Wall and Galton (1979), Molnar (1980), Sues and Galton (1987), Carroll (1988), Hutt et al. (1989), Maryanska (1990), Le Loeuff (1991), Olshevsky and Ford (1994) and Blows (1998); to Pachycephalosauria by Norman (1997), Buffetaut (1997), Sereno (2000) and Ruiz-Omeñaca and Canudo (2003); to Pachycephalosauria by Dodson (1990), Williamson and Carr (2003), Maryanska et al. (2004) and Williamson and Carr (2006); to Maniraptora by Naish and Martill (2008); and to Theropoda by Sullivan (2006) and Butler and Sullivan (2009).
Species
Y. bitholus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Yaverlandia Galton |
| 1974 | Yaverlandia Galton p. 1064 fig. 6 |
| 1974 | Yaverlandia Maryańska and Osmólska p. 47 |
| 1974 | Yaverlandia Thulborn p. 173 |
| 1975 | Yaverlandia Galton p. 748 |
| 1978 | Yaverlandia Dong p. 228 |
| 1979 | Yaverlandia Wall and Galton p. 1185 |
| 1980 | Yaverlandia Molnar p. 137 |
| 1987 | Yaverlandia Sues and Galton |
| 1988 | Yaverlandia Carroll |
| 1989 | Yaverlandia Hutt et al. p. 145 |
| 1990 | Yaverlandia Dodson p. 562 |
| 1990 | Yaverlandia Maryanska p. 566 |
| 1991 | Yaverlandia Le Loeuff p. 105 |
| 1994 | Yaverlandia Olshevsky and Ford p. 91 |
| 1997 | Yaverlandia Buffetaut p. 214 |
| 1997 | Yaverlandia Norman p. 784 |
| 1998 | Yaverlandia Blows p. 32 |
| 2000 | Yaverlandia Sereno p. 500 fig. 25.8 |
| 2003 | Yaverlandia Ruiz-Omeñaca and Canudo p. 298 |
| 2003 | Yaverlandia Williamson and Carr fig. 11 |
| 2004 | Yaverlandia Maryanska et al. p. 465 |
| 2006 | Yaverlandia Sullivan p. 361 |
| 2006 | Yaverlandia Williamson and Carr pp. 325-326 fig. 2 |
| 2008 | Yaverlandia Naish and Martill p. 620 |
| 2009 | Yaverlandia Butler and Sullivan p. 32 |
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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 | |
|---|---|---|
| P. M. Galton 1971 | Skull cap thickened with twp small domes, one per frontal; dorsal surface pitted; frontal not excluded from the edge of the orbit by the prefrontal; supratemporal fenestra not constricted to any extent by the postorbital. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Marsh 1875 | |||||
Age range: base of the Late/Upper Hauterivian to the top of the Early/Lower Barremian or 136.40000 to 125.45000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Hauterivian - Early/Lower Barremian | United Kingdom (England) | Proodon sp. (47190) |