Tritor vascular tubules in a holocephalan tooth plate (Ischyodus sp.) from the Cretaceous of Mississippi, USA
Year: 2024
Type: article
Abstract: A fossil chimaeroid tooth plate (Ischyodus sp.) from the Cretaceous of Frankstown, Mississippi shows exceptional preservation of tritor microstructure. Diagenetic loss of the petrodentine/whitlockin in this specimen has revealed the ultrastructure of the vascular tubule networks of tritor interior structure. The observation that vascular tubes running through the hard tissues of chimaeroid tritors host odontoblast cells supports the hypothesis of an odontoblastic origin for chimaeroid tritor tissue.
Source: Mesozoic
Authors: MARK A. S. MCMENAMIN, DOUGLAS FLEURY
Institution: Mount Holyoke College
Language: English
Subfield: Paleontology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4405687007