6533b82dfe1ef96bd1291b8c
RESEARCH PRODUCT
On the ontogeny and orientation of the Triassic Conodont P1-element in Pseudofurnishius murcianus Van den Boogaard, 1966
Pablo PlasenciaPablo PlasenciaAna Márquez-aliagaFrancis Hirschsubject
biologyOntogenyPaleontologyBiostratigraphybiology.organism_classificationCommon ancestryFully developedPaleontologySpace and Planetary ScienceDistribution patternOrientation (geometry)PhanerozoicConodontGeologydescription
Successive growth stages of P1-elements in the Middle to early Late Triassic species Pseudofurnishius murcianus allows the observation of a detailed ontogeny. Besides the gradual enlargement of its curved blade and the growing number of its denticles, a small internal platform develops, eventually followed by an external one, both bearing denticles. The number of denticles on the blade and internal platform increases from five and one in the smallest specimens, respectively, to 14 and 9 in fully developed ones, whereby the distribution pattern of platform-denticles, on the inner one in particular, is of great morphological variety. For the orientation of the P1-element of P. murcianus, the comparison of the early development stages of Pseudofurnishius and Sephardiella, that share a common ancestry, permits to adhere to the orientation used by Diebel rather than to the one proposed by Van den Boogaard.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-09-01 | Geobios |