Petrography and geochemistry of fossil bones from the Pisco Fossil-Lagerstätte (Peru)


Giulia Bosio, Anna Gioncada, Giovanni Bianucci

Dipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, Italy. 
G. Bosio:

A. Giocada:

G. Bianucci:


How to cite: Bosio et al. (2020). Petrography and geochemistry of fossil bones from the Pisco Fossil-Lagerstätte (Peru). Fossilia, Volume 2020: 5-8.

Bullet-Points Abstract
  • Different bone types are recognized based on color, hardness, petrography and
    REE content.
  • Fossil bones from the same Lagerstätte have undergone different fossilization
  • The permeability of the sediment affected the bone preservation.

Keywords: bioapatite; marine vertebrates; taphonomy; Miocene; East Pisco Basin.


Fig. 1. A. Thin section of compact bone tissue from a fossil cetacean pinkish and fragile rib preserved in a low permeability sediment (volcanic ash layer), under transmitted and plane-polarized light. B. Thin section of cancellous bone tissue from a fossil cetacean red and moderately hard rib preserved in a high-permeability sediment (sandstone), under transmitted and planepolarized light. Note the Fe-oxides, ghosts of pyrite framboids.

Cited References

  • Bianucci G., Di Celma C., Landini W., Post K., Tinelli C., de Muizon C., Gariboldi K., Malinverno E., Cantalamessa G., Gioncada A., Collareta A., Salas-Gismondi R., Varas-Malca R.M., Urbina M. & Lambert O. (2016). Distribution of fossil marine vertebrates in Cerro Colorado, the type locality of the giant raptorial sperm whale Livyatan melvillei (Miocene, Pisco Formation, Peru). Journal of Maps, 12: 543-557.
  • Bodzioch A. (2015). Idealized Model of Mineral Infillings in Bones of Fossil Freshwater Animals, on the Example of Late Triassic Metoposaurs from Krasiejów (Poland). Austin Journal of Earth Science, 2 (1): 1008. 
  • Gioncada A., Collareta A., Gariboldi K., Lambert O., Di Celma C., Bonaccorsi E., Urbina M. & Bianucci G. (2016). Inside baleen: exceptional microstructure preservation in a late Miocene whale skeleton from Peru. Geology, 44: 839-842.
  • Gariboldi K., Gioncada A., Bosio G., Malinverno E., Di Celma C., Tinelli C., Cantalamessa G., Landini W., Urbina M. & Bianucci G. (2015). The dolomite nodules enclosing fossil marine vertebrates in the East Pisco Basin, Peru: field and petrographic insights into the Lagerstätte formation. Palaeogeography, Palaeoclimatology, Palaeoecology, 438: 81-95.
  • Keenan S.W. (2016). From bone to fossil: A review of the diagenesis of bioapatite. American Mineralogist, 101: 1943-1951.
  • Pfretzschner H.-U. (2004). Fossilization of Haversian bone in aquatic environments. Comptes Rendus Palevol, 3: 605-616.
  • Trueman C.N. (2013). Chemical taphonomy of biomineralized tissues. Palaeontology, 56: 475-486.
  • Trueman C.N. & Tuross N. (2002). Trace Elements in Recent and Fossil Bone Apatite. Reviews in Mineralogy and Geochemistry, 48 (1): 489-521.