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 8 Diagnostic characters of the young adult growth category of Tyrannosaurus rex. These characters are unambiguously optimized on the topology and have a consistency index (CI) of 1.0 indicating that they have changed only once on the ontogram and so can be considered diagnostic of the growth category. PHYLO, corresponding homologous phylogenetic character (see Data S1).| Character | Growth change |
|---|
| 18. Maxilla, interfenestral strut, length (PHYLO 31) | 0 ==> 1 |
|---|
| 24. Maxilla, alveolar process, subcutaneous surface, fossae (PHYLO 44) | 0 ==> 1 |
|---|
| 109. Otoccipital, paroccipital process, caudal surface, form (PHYLO 200) | 0 ==> 1 |
|---|
| 253. Premaxilla, lateral margin, form | 0 ==> 1 |
|---|
| 376. Maxilla, antorbital fossa, mediolateral depth | 0 ==> 1 |
|---|
| 523. Lacrimal, subcutaneous surface, texture | 0 ==> 1 |
|---|
| 651. Postorbital, jugal ramus, width, caudal | 0 ==> 1 |
|---|
| 717. Squamosal, dorsotemporal fossa, lateral half, texture | 0 ==> 1 |
|---|
| 737. Quadratojugal, squamosal process, ridge, width | 0 ==> 1 |
|---|
| 741. Quadratojugal, dorsal joint surface for quadratojugal, texture & depth | 0 ==> 1 |
|---|
| 742. Quadratojugal, dorsal joint surface for quadrate, rostral margin, form | 0 ==> 1 |
|---|
| 882. Frontals, proportions apposed bones | 0 ==> 1 |
|---|
| 913. Frontal, joint surface for the prefrontal, rostrocaudal position | 0 ==> 1 |
|---|
| 931. Frontal, orbital surface, medial margin, orientation | 1 ==> 2 |
|---|
| 1014. Otoccipital, metotic strut, oval scar complex, participation | 0 ==> 1 |
|---|
| 1017. Subcondylar recesses, distance from each other | 0 ==> 1 |
|---|
| 1043. Basisphenoid, oval scar, texture | 1 ==> 2 |
|---|
| 1048. Basisphenoid, spout, presence | 0 ==> 1 |
|---|
| 1052. Basisphenoid, flange form ventral end of preotic pendant | 0 ==> 1 |
|---|
| 1055. Supraoccipital, bar across lateral processes, prominence | 0 ==> 1 |
|---|
| 1082. Dentary, chin, subcutaneous surface, texture | 0 ==> 1 |
|---|
| 1111. Dentary, ventral bar, depth below Meckelian fossa | 0 ==> 1 |
|---|
| 1168. Angular, 2ndry ridge, form | 0 ==> 1 |
|---|
| 1647. Fibula, ratio of midheight length to total height | 0 ==> 1 |
|---|
| 1657. Fibula, proximal end, dorsal margin, form | 0 ==> 1 |
|---|
| 1672. Fibula, anterior surface proximal surface to bipartite scar | 1 ==> 2 |
|---|
| 1675. Fibula, medial fossa, differentiation | 0 ==> 1 |
|---|
| 16.83. Fibula, ventral end below bipartite scar, form | 0 ==> 1 |
|---|
| 1848. Growth rings, number | 3 ==> 4 |
|---|