Project 494: Sarah Werning. 2012. The ontogenetic osteohistology of Tenontosaurus tilletti. PLOS ONE. 7 (3):e33539.

Specimen: † Tenontosaurus tilletti Ostrom, 1970 (OMNH:63525)
View: Tibia: cross-section, mid-diaphysis
View: Tibia: cross-section, mid-diaphysis
Abstract
Tenontosaurus tilletti is an ornithopod dinosaur known from the Early Cretaceous (Aptian-Albian) Cloverly and Antlers formations of the Western United States. It is represented by a large number of specimens spanning a number of ontogenetic stages, and these specimens have been collected across a wide geographic range (from central Montana to southern Oklahoma). Here I describe the long bone histology of T. tilletti and discuss histological variation at the individual, ontogenetic and geographic levels. The ontogenetic pattern of bone histology in T. tilletti is similar to that of otherdinosaurs, reflecting extremely rapid growth early in life, and sustained rapid growth through sub-adult ontogeny. But unlike other iguanodontians, this dinosaur shows an extended multi-year period of slow growth as skeletal maturity approached. Evidence of termination of growth (e.g., an external fundamental system) is observed in only the largest individuals, although other histological signals in only slightly smaller specimens suggest a substantial slowing of growth later in life. Histological differences in the amount of remodeling and the number of lines of arrested growth varied among elements within individuals, but bone histology was conservative across sampled individuals of the species, despite known paleoenvironmental differences between the Antlers and Cloverly formations. The bone histology of T. tilletti indicates a much slower growth trajectory than observed for other iguanodontians (e.g., hadrosaurids), suggesting that those taxa reached much larger sizes than Tenontosaurus in a shorter time.
Read the article »
Project DOI: 10.7934/P494, http://dx.doi.org/10.7934/P494
This project contains |
---|
Download Project SDD File ![]() |
Currently Viewing:
MorphoBank Project 494
MorphoBank Project 494
- Creation Date:
05 April 2011 - Publication Date:
28 March 2012 - Project views: 83135
- Media downloads: 280
Authors' Institutions
- University of Oklahoma
Members
member name | taxa ![]() |
specimens ![]() |
media ![]() | media notes |
Sarah Werning Project Administrator | 1 | 18 | 64 | 61 |
Project has no matrices defined.
Project views 
type | number of views | Individual items viewed (where applicable) |
Total project views | 83135 | |
Project overview | 6886 | |
Media views | 50415 | Media search (6368 views); M68274 (724 views); M68064 (934 views); M68279 (660 views); M68284 (682 views); M68277 (726 views); M68309 (1471 views); M85891 (672 views); M93556 (688 views); M93560 (644 views); M93564 (613 views); M93567 (651 views); M93568 (634 views); M93576 (692 views); M93693 (686 views); M93694 (719 views); M93692 (596 views); M68308 (731 views); M68311 (706 views); M68310 (635 views); M93553 (684 views); M68280 (726 views); M93578 (651 views); M68276 (676 views); M68278 (749 views); M68285 (664 views); M93577 (661 views); M68281 (699 views); M75918 (680 views); M68275 (682 views); M90595 (712 views); M90615 (665 views); M75921 (679 views); M68336 (675 views); M68273 (674 views); M68282 (709 views); M68283 (665 views); M68307 (681 views); M68312 (711 views); M75796 (708 views); M68320 (673 views); M75914 (781 views); M75915 (694 views); M75919 (663 views); M75920 (655 views); M85890 (719 views); M90594 (733 views); M90596 (705 views); M93554 (698 views); M93555 (702 views); M93557 (654 views); M93558 (717 views); M93559 (638 views); M93561 (645 views); M93562 (627 views); M93563 (599 views); M93565 (602 views); M93566 (595 views); M93569 (623 views); M93570 (586 views); M93573 (624 views); M93572 (616 views); M93571 (679 views); M93574 (573 views); M93575 (631 views); |
Views for media list | 4856 | |
Folio views | 5258 | Folio list (1470 views); Femoral cross-sections (660 views); Tibial cross-sections (683 views); Fibular cross-sections (633 views); Humeral cross-sections (622 views); Ulnar cross-sections (637 views); Rib cross-sections (553 views); |
Specimen list | 12449 | |
Taxon list | 2320 | |
Bibliography | 950 | |
Documents list | 1 |
Project downloads 
type | number of downloads | Individual items downloaded (where applicable) |
Total downloads from project | 718 | |
Media downloads | 280 | M68274 (7 downloads); M68064 (19 downloads); M68279 (5 downloads); M68284 (5 downloads); M68277 (9 downloads); M68309 (15 downloads); M85891 (4 downloads); M93556 (4 downloads); M93560 (3 downloads); M93564 (3 downloads); M93567 (3 downloads); M93568 (4 downloads); M93693 (5 downloads); M93694 (4 downloads); M93692 (4 downloads); M68308 (10 downloads); M68276 (5 downloads); M68281 (7 downloads); M68273 (5 downloads); M68275 (6 downloads); M68278 (6 downloads); M68280 (6 downloads); M68282 (4 downloads); M68283 (4 downloads); M68285 (8 downloads); M68307 (8 downloads); M68310 (2 downloads); M68311 (2 downloads); M68312 (3 downloads); M68320 (2 downloads); M68336 (4 downloads); M75796 (3 downloads); M75914 (5 downloads); M75915 (6 downloads); M75918 (7 downloads); M75919 (9 downloads); M75920 (6 downloads); M75921 (7 downloads); M85890 (3 downloads); M90594 (4 downloads); M90595 (2 downloads); M90596 (3 downloads); M90615 (4 downloads); M93553 (3 downloads); M93554 (2 downloads); M93555 (2 downloads); M93557 (2 downloads); M93558 (3 downloads); M93559 (3 downloads); M93561 (2 downloads); M93562 (2 downloads); M93563 (2 downloads); M93565 (1 download); M93566 (2 downloads); M93569 (2 downloads); M93570 (2 downloads); M93571 (2 downloads); M93572 (2 downloads); M93573 (2 downloads); M93574 (2 downloads); M93575 (3 downloads); M93576 (2 downloads); M93577 (2 downloads); M93578 (2 downloads); |
Project downloads | 438 |