ArticleScientific reports2016
Vascularised endosteal bone tissue in armoured sauropod dinosaurs.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 30 citations in OpenAlex.
- Latest Cretaceous megaraptorid theropod dinosaur sheds light on megaraptoran evolution and palaeobiology.Nature communications · 2025Article
- Keratan sulfate as a marker for medullary bone in fossil vertebrates.Journal of anatomy · 2021Article
- Evolution and distribution of medullary bone: evidence from a new Early Cretaceous enantiornithine bird.National science review · 2020Article
- Identifying medullary bone in extinct avemetatarsalians: challenges, implications and perspectives.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020Article
- Systemic distribution of medullary bone in the avian skeleton: ground truthing criteria for the identification of reproductive tissues in extinct Avemetatarsalia.BMC evolutionary biology · 2019Article
- Article
- Medullary bone in an Early Cretaceous enantiornithine bird and discussion regarding its identification in fossils.Nature communications · 2018Article
- Intraskeletal histovariability, allometric growth patterns, and their functional implications in bird-like dinosaurs.Scientific reports · 2018Article
- The internal anatomy of titanosaur osteoderms from the Upper Cretaceous of Spain is compatible with a role in oogenesis.Scientific reports · 2017Article
- Growth and life history of freshwater chelydrid turtles (Testudines: Cryptodira): A bone histological approach.Journal of anatomyArticle
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3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The presence of well-vascularised, endosteal bone in the medullary region of long bones of nonavian dinosaurs has been invoked as being homologous to medullary bone, a specialised bone tissue formed during ovulation in birds. However, similar bone tissues can result as a pathological response in modern birds and in nonavian dinosaurs, and has also been reported in an immature nonavian dinosaur. Here we report on the occurrence of well-vascularised endosteally formed bone tissue in three skeletal elements of armoured titanosaur sauropods from the Upper Cretaceous of Argentina: i) within the medullary cavity of a metatarsal, ii) inside a pneumatic cavity of a posterior caudal vertebra, iii) in intra-trabecular spaces in an osteoderm. We show that considering the criteria of location, origin (or development), and histology, these endosteally derived tissues in the saltasaurine titanosaurs could be described as either medullary bone or pathological bone. Furthermore, we show that similar endosteally formed well-vascularised bone tissue is fairly widely distributed among nondinosaurian Archosauriformes, and are not restricted to long bones, but can occur in the axial, and dermal skeleton. We propose that independent evidence is required to verify whether vascularised endosteal bone tissues in extinct archosaurs are pathological or reproductive in nature.
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