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growth

Behavior & Physiology

2 image(s) · 11 News

Image gallery

Juvenile Gorgosaurus TMP 2009.12.14 preserving stomach contents. Photographs of specimen in (A) right lateral view and (B) left anterolateral view. (C) Interpretive illustration of specimen in right lateral view. Skeleton consists of a nearly complete skull, the left side of the body and limbs, and a nearly complete pelvis. Red rectangle delineates location of stomach contents. (D) Histological photomicrograph of tibia showing the presence of five lines of arrested growths and two annuli (marked by asterisks), indicating that the individual was between 5 and 7 years old. Scale bars, 50 cm (A) to (C) and 1 mm (D).

Juvenile Gorgosaurus TMP 2009.12.14 preserving stomach contents. Photographs of specimen in (A) right lateral view and (B) left anterolateral view. (C) Interpretive illustration of specimen in right lateral view. Skeleton consists of a nearly complete skull, the left side of the body and limbs, and a nearly complete pelvis. Red rectangle delineates location of stomach contents. (D) Histological photomicrograph of tibia showing the presence of five lines of arrested growths and two annuli (marked by asterisks), indicating that the individual was between 5 and 7 years old. Scale bars, 50 cm (A) to (C) and 1 mm (D).

limb pelvis scale growth +6
Osteohistology of UALVP 59606, metatarsal IV of Citipes elegans. Overview of histological thin section of UALVP 59606 in plane-polarized (A) and cross-polarized (B) light, showing locations of close-up images. Detail (C) of cortex showing predominantly primary fibrolamellar bone with longitudinal-reticular vascularity, endosteal layer, and cyclical growth marks (arrows), under plane-polarized light. Close-up (D) of well developed endosteal layer on the medullary cavity, showing sec- ondary excavation by simple vascular canals, under cross-polarized light. Close-up (E) of tightly packed cyclical growth marks (arrows) near the periosteal surface of the cortex, under plane-polarized light. Close-up (F) of periosteal surface of cortex, showing avascular parallel-fibered bone indicating an incipient external fundamental system (double ended arrow) with three LAGs (arrows). Abbreviations: efs, incipient external fundamental system; el, endosteal lamellae; hb, Haversian bone; pfb, parallel-fibered bone; radv, radial simple vascular canal; so, secondary osteon.

Osteohistology of UALVP 59606, metatarsal IV of Citipes elegans. Overview of histological thin section of UALVP 59606 in plane-polarized (A) and cross-polarized (B) light, showing locations of close-up images. Detail (C) of cortex showing predominantly primary fibrolamellar bone with longitudinal-reticular vascularity, endosteal layer, and cyclical growth marks (arrows), under plane-polarized light. Close-up (D) of well developed endosteal layer on the medullary cavity, showing sec- ondary excavation by simple vascular canals, under cross-polarized light. Close-up (E) of tightly packed cyclical growth marks (arrows) near the periosteal surface of the cortex, under plane-polarized light. Close-up (F) of periosteal surface of cortex, showing avascular parallel-fibered bone indicating an incipient external fundamental system (double ended arrow) with three LAGs (arrows). Abbreviations: efs, incipient external fundamental system; el, endosteal lamellae; hb, Haversian bone; pfb, parallel-fibered bone; radv, radial simple vascular canal; so, secondary osteon.

bone growth Citipes Leptorhynchos +1

News

T. rex took 40 years to reach full size, scientists find
growth predator fossil Tyrannosaurus study
Tyrannosaurus rex may have been a much slower grower than scientists realized. A new study of 17 tyrannosaur fossils found that the giant predator likely took about 40 years to reach its full size of roughly eight tons, extending previous estimates by 15 years.
22/06/2026 sciencedaily
New Study Reveals Different Growth Strategies in Tiny Dimetrodon Species
growth predator other reptiles study
A newly published study examining the growth rates of Dimetrodon teutonis and Dimetrodon natalis has provided a fresh perspective on a famous, primitive synapsid. Researchers have discovered that the smallest known species of Dimetrodon achieved their diminutive size in contrasting ways. The study provides fresh insights into the lives of these iconic sail-backed predators that
17/06/2026 everythingdinosaur
Local Company Takes to Zoom to Reach International Audiences
growth Dinosauria
A Middlewich-based company with customers around the world is preparing for its first international Zoom interview as part of a wider strategy to engage overseas audiences and support export growth. Everything Dinosaur, the award-winning prehistoric animal model specialist run by Mike and Sue will participate in a live online discussion with German-based broadcaster, palaeoartist and
07/06/2026 everythingdinosaur
These tiny dinosaur fossils fooled scientists for 20 years
armor bone growth fossil Ankylosauria Dinosauria discovery
Tiny dinosaur fossils that puzzled scientists for over 20 years have finally revealed their true identity. Rather than belonging to a miniature species, they are actually baby ankylosaurs—some less than a year old, including a possible hatchling. By studying bone growth patterns, researchers confirmed these young dinosaurs hadn’t yet developed into full-sized adults. The discovery sheds new light on how ankylosaurs grew, showing they began developing armor surprisingly early.
21/04/2026 sciencedaily
After 200 years scientists finally crack the “dolomite problem”
growth discovery
After two centuries of failed attempts, scientists have finally grown dolomite in the lab, cracking a long-standing geological puzzle. They discovered that the mineral’s growth stalls because of tiny defects—but in nature, those flaws get washed away over time. By mimicking this process with precise simulations and electron beam pulses, the team achieved record-breaking crystal growth. The finding could reshape how high-tech materials are made.
20/04/2026 sciencedaily-paleo
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