@article{fdi:010066771,
  title = {{N}ewinsights in the ontogeny and taphonomy of the {D}evonian acanthodian {T}riazeugacanthus affinis from the {M}iguasha {F}ossil-{L}agerstatte, {E}astern {C}anada},
  author = {{C}hevrinais, {M}. and {B}alan, {E}tienne and {C}loutier, {R}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}rogressive biomineralization of a skeleton occurs during ontogeny in most animals. {I}n fishes, larvae are poorly mineralized, whereas juveniles and adults display a progressively more biomineralized skeleton. {F}ossil remains primarily consist of adult specimens because the fossilization of poorly-mineralized larvae and juveniles necessitates exceptional conditions. {T}he {M}iguasha {F}ossil-{L}agerstatte is renowned for its {L}ate {D}evonian vertebrate fauna, revealing the exceptional preservation of fossilized ontogenies for 14 of the 20 fish species from this locality. {T}he mineralization of anatomical structures of the acanthodian {T}riazeugacanthus affinis from {M}iguasha are compared among larval, juvenile and adult specimens using {E}nergy {D}ispersive {X}-ray {S}pectrometry. {C}hemical composition of anatomical structures of {T}riazeugacanthus reveals differences between cartilage and bone. {A}lthough the histology and anatomy is well-preserved, {F}ourier transform infrared spectrometry shows that the original chemical composition of bone is altered by diagenesis; the mineral phase of the bone (i.e., hydroxyapatite) is modified chemically to form more stable carbonate-fluorapatite. {F}luorination occurring in mineralized skeletal structures of adult {T}riazeugacanthus is indicative of exchanges between groundwater and skeleton at burial, whereas the preservation of larval soft tissues is likely owing to a rapid burial under anoxic conditions. {T}he exceptional state of preservation of a fossilized ontogeny allowed us to characterize chemically the progressive mineralization of the skeleton in a {D}evonian early vertebrate.},
  keywords = {fossilized ontogeny ; {D}evonian ; biomineralization ; {A}canthodii ; paleontology ; {CANADA}},
  booktitle = {},
  journal = {{M}inerals},
  volume = {6},
  numero = {1},
  pages = {art. 1 [17 p.]},
  ISSN = {2075-163{X}},
  year = {2016},
  DOI = {10.3390/min6010001},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066771},
}