The evolutionary trend of platform denticulation in Middle Triassic acuminate Gondolellidae (Conodonta)

Authors

PABLO PLASENCIA
ALİ MURAT KILIÇ
AYMON BAUD
MILAN SUDAR
FRANCIS HIRSCH

DOI

10.3906/zoo-1708-20

Abstract

Acuminate Middle-Late Triassic Gondolellidae are characterized by an ellipsoid platform with a central to posterior amygdaloid basal cavity and an octomembrate apparatus of gondolelloid affinity. Starting with a neospathodiform proteromorph during the Anisian, their anagenetic lineage developed during the Fassanian, Longobardian, and Julian, ending in another neospathodiform proteromorph. As the increase in complexity in the platform denticulation is an important evolutionary trend, three new genera are proposed: Guexispathodus n. gen., Marquezella n. gen., and Kirilella n. gen., which, together with Pseudofurnishius and Mosherella, represent the subfamily Marquezellinae n. subfam.

Keywords

Conodonts, evolution, Middle Triassic, systematic, Marquezellinae

First Page

187

Last Page

197

Recommended Citation

PLASENCIA, PABLO; KILIÇ, ALİ MURAT; BAUD, AYMON; SUDAR, MILAN; and HIRSCH, FRANCIS (2018) "The evolutionary trend of platform denticulation in Middle Triassic acuminate Gondolellidae (Conodonta)," Turkish Journal of Zoology: Vol. 42: No. 2, Article 4. https://doi.org/10.3906/zoo-1708-20
Available at: https://journals.tubitak.gov.tr/zoology/vol42/iss2/4