A high-resolution growth series of Tyrannosaurus rex obtained from multiple lines of evidence
Author
Carr, Thomas D.
Department of Biology, Carthage College, Kenosha, WI, USA
text
PeerJ
2020
8
e 9192
e 9192
journal article
224105
10.7717/peerj.9192
d363523c-cf93-410c-808d-0da6b8d62ff6
5824972
Table 11 Summary of width to length ratios of maxillary and dentary teeth in adult Tyrannosaurus rex compared with representative adults of other tyrannosaurids. In T. rex the maxillary teeth tend to be wider than in other tyrannosaurids, and also at the mesial end of the tooth row of the dentary. However, the characterization by Osborn (1906) of the teeth in T. rex as generally wider than long is not supported by these data. | T. rex | | | | | | | D. torosus | D. horneri | A. sarcophagus |
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| MOR 008 | RSM 2523.8 | LACM 23844 | MOR 980 | CM 9380 | T. rex mean | BMRP 2002.4.1 | CMN 8506 | MOR 1130 | TMP 1981.010.0001 |
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| Mx1 | – | 85% | 71% | – | – | 78% | ?, 150% | 87% | – | – |
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| Mx2 | – | – | – | 91% | – | 91% | 73%, 83% | 64% | 79% | 56% |
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| Mx3 | – | 65% | 69% | – | – | 67% | 48%,? | – | – | 68% |
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| Mx4 | 98% | – | – | – | – | 98% | ? 54% | 100% | – | 59% |
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| Mx5 | – | 77% | 72% | – | – | 74.5% | 50%,? | – | – | 56% |
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| Mx6 | – | – | 71% | 85% | – | 78% | 50%, 56% | 74% | – | 63% |
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| Mx7 | 74% | 81% | – | 85% | – | 80% | 45%,? | – | – | 63% |
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| Mx8 | 76% | – | – | – | – | 76% | 53%, 51% | 69% | – | 61% |
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| Mx9 | 84% | – | – | – | – | 84% | 54%,? | – | – | – |
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| Mx10 | 84% | 72% | – | – | 77% | 77.7% | ?, 54% | 73% | – | – |
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| Mx11 | 84% | – | – | – | – | 84% | ?, 50% | 72% | – | – |
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| Mx12 | – | – | n/a | – | – | – | 47%,? | – | – | 63% |
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| Mx13 | n/a | n/a | n/a | n/a | n/a | – | 49%, 51% | – | – | – |
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| Mx14 | n/a | n/a | n/a | n/a | n/a | – | 50%,? | – | – | – |
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| Mx15 | n/a | n/a | n/a | n/a | n/a | – | 54%, 53% | – | – | – |
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| Mx16 | n/a | n/a | n/a | n/a | n/a | – | ?,? | – | – | – |
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| Dn1 | – | 170% | – | – | 140% | 155% | 130%, 120% | – | – | – |
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| Dn2 | – | 110% | 73% | – | 94% | 92.3% | 83%, 84% | – | – | – |
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| Dn3 | – | – | – | – | 88% | 88% | ?, 70% | – | – | – |
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| Dn4 | 82% | 87% | – | – | 84% | 84.3% | 64%, 65% | 78% | – | – |
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| Dn5 | – | 120% | 73% | – | 77% | 90% | 58%,? | 70% | – | – |
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| Dn6 | 83% | – | – | – | – | 83% | 61%, 58% | – | – | – |
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| Dn7 | 79% | 130% | 76% | – | 82% | 91.8% | ?, 54% | 90% | – | – |
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| Dn8 | – | 79% | – | – | – | 76% | 53%,? | – | – | – |
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| Dn9 | 77% | – | – | – | – | 77% | 53%,? | 80% | – | – |
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| Dn10 | 69% | – | – | – | 76% | 72.5% | 57%,? | 86% | – | – |
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| Dn11 | 69% | – | – | – | – | 69% | 53%,? | 74% | – | – |
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| Dn12 | 70% | – | 67% | – | 76% | 71% | ? | – | – | – |
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| Dn13 | 80% | 60% | n/a | – | – | 70% | 50%,? | 75% | – | – |
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| Dn14 | n/a | 79% | n/a | – | n/a | 79% | 50%,? | 72% | – | – |
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| Dn15 | n/a | n/a | n/a | – | n/a | – | 58%,? | – | – | – |
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| Dn16 | n/a | n/a | n/a | – | n/a | – | 53%,? | 83% | – | – |
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| Dn17 | n/a | n/a | n/a | – | n/a | – | 65%,? | n/a | – | – |
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