Dinosaurian soft tissues interpreted as bacterial biofilms.

A scanning electron microscope survey was initiated to determine if the previously reported findings of "dinosaurian soft tissues" could be identified in situ within the bones. The results obtained allowed a reinterpretation of the formation and preservation of several types of these "...

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Autores principales:	Thomas G Kaye, Gary Gaugler, Zbigniew Sawlowicz
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2008
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a954663732904eddad4f85763c86b5a7
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spelling	oai:doaj.org-article:a954663732904eddad4f85763c86b5a72021-11-25T06:11:25ZDinosaurian soft tissues interpreted as bacterial biofilms.1932-620310.1371/journal.pone.0002808https://doaj.org/article/a954663732904eddad4f85763c86b5a72008-07-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/18665236/?tool=EBIhttps://doaj.org/toc/1932-6203A scanning electron microscope survey was initiated to determine if the previously reported findings of "dinosaurian soft tissues" could be identified in situ within the bones. The results obtained allowed a reinterpretation of the formation and preservation of several types of these "tissues" and their content. Mineralized and non-mineralized coatings were found extensively in the porous trabecular bone of a variety of dinosaur and mammal species across time. They represent bacterial biofilms common throughout nature. Biofilms form endocasts and once dissolved out of the bone, mimic real blood vessels and osteocytes. Bridged trails observed in biofilms indicate that a previously viscous film was populated with swimming bacteria. Carbon dating of the film points to its relatively modern origin. A comparison of infrared spectra of modern biofilms with modern collagen and fossil bone coatings suggests that modern biofilms share a closer molecular make-up than modern collagen to the coatings from fossil bones. Blood cell size iron-oxygen spheres found in the vessels were identified as an oxidized form of formerly pyritic framboids. Our observations appeal to a more conservative explanation for the structures found preserved in fossil bone.Thomas G KayeGary GauglerZbigniew SawlowiczPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 3, Iss 7, p e2808 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thomas G Kaye Gary Gaugler Zbigniew Sawlowicz Dinosaurian soft tissues interpreted as bacterial biofilms.
description	A scanning electron microscope survey was initiated to determine if the previously reported findings of "dinosaurian soft tissues" could be identified in situ within the bones. The results obtained allowed a reinterpretation of the formation and preservation of several types of these "tissues" and their content. Mineralized and non-mineralized coatings were found extensively in the porous trabecular bone of a variety of dinosaur and mammal species across time. They represent bacterial biofilms common throughout nature. Biofilms form endocasts and once dissolved out of the bone, mimic real blood vessels and osteocytes. Bridged trails observed in biofilms indicate that a previously viscous film was populated with swimming bacteria. Carbon dating of the film points to its relatively modern origin. A comparison of infrared spectra of modern biofilms with modern collagen and fossil bone coatings suggests that modern biofilms share a closer molecular make-up than modern collagen to the coatings from fossil bones. Blood cell size iron-oxygen spheres found in the vessels were identified as an oxidized form of formerly pyritic framboids. Our observations appeal to a more conservative explanation for the structures found preserved in fossil bone.
format	article
author	Thomas G Kaye Gary Gaugler Zbigniew Sawlowicz
author_facet	Thomas G Kaye Gary Gaugler Zbigniew Sawlowicz
author_sort	Thomas G Kaye
title	Dinosaurian soft tissues interpreted as bacterial biofilms.
title_short	Dinosaurian soft tissues interpreted as bacterial biofilms.
title_full	Dinosaurian soft tissues interpreted as bacterial biofilms.
title_fullStr	Dinosaurian soft tissues interpreted as bacterial biofilms.
title_full_unstemmed	Dinosaurian soft tissues interpreted as bacterial biofilms.
title_sort	dinosaurian soft tissues interpreted as bacterial biofilms.
publisher	Public Library of Science (PLoS)
publishDate	2008
url	https://doaj.org/article/a954663732904eddad4f85763c86b5a7
work_keys_str_mv	AT thomasgkaye dinosauriansofttissuesinterpretedasbacterialbiofilms AT garygaugler dinosauriansofttissuesinterpretedasbacterialbiofilms AT zbigniewsawlowicz dinosauriansofttissuesinterpretedasbacterialbiofilms
_version_	1718414062050607104

Dinosaurian soft tissues interpreted as bacterial biofilms.

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