''Palmatolepis'' is an extinct

conodont Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which ...

genus in the family

Palmatolepidae Palmatolepidae is an extinct conodont family. It is part of the clade Prioniodontida, also known as the "complex conodonts".Conodonts Meet Cladistics: Recovering Relationships and Assessing the Completeness of the Conodont Fossil Record. Philip ...

. It was the most abundant genus of conodonts of the Late Devonian, disappearing during the Devonian/Carboniferous crisis.

Species

* †''Palmatolepis glabra'' * †''Palmatolepis hassi''Locality and horizon: Upper part of the Grey Member, Ferques Formation, La Parisienne quarry (now flooded), Pas-de-Calais, France. Specimen from lowermost Ag. triangularis Conodont Zone, equivalent to late Palmatolepis hassi Zone (ca. 373 Ma, Frasnian). * †''Palmatolepis khaensis'' Savage

2013 File:2013 Events Collage V2.png, From left, clockwise: Edward Snowden becomes internationally famous for leaking classified NSA wiretapping information; Typhoon Haiyan kills over 6,000 in the Philippines and Southeast Asia; The Dhaka garment fact ...

* †''Palmatolepis marki'' Savage

* †''Palmatolepis spallettae'' * †''Palmatolepis subperlobata'' ** †''Palmatolepis subperlobata lapoensis'' Savage

* †''Palmatolepis triangularis'' * †''Palmatolepis unicornis''

Use in stratigraphy

The

Famennian The Famennian is the latter of two faunal stages in the Late Devonian Epoch. The most recent estimate for its duration estimates that it lasted from around 371.1 million years ago to 359.3 million years ago. An earlier 2012 estimate, still used b ...

(372.2 ± 1.6 mya) is defined by a

GSSP Golden Spike A Global Boundary Stratotype Section and Point (GSSP) is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundary of a stage on the geologic time scale. The effort to define GSSPs is conducted b ...

located at

Coumiac quarry The Coumiac Formation is a geologic formation in France. It preserves fossils dated to the Devonian period. The Global Boundary Stratotype Section and Point (GSSP) for the base of the Famennian Stage of the Devonian is located at Coumiac quarry ...

, Montagne Noire, France where there is a biologic abundant occurrence of ''Palmatolepis triangularis''. During that stage, a biologic event occurred (Upper Kellwasser Extinction of all ''

Ancyrodella ''Ancyrodella'' is an extinct genus of conodonts from the Late Devonian. During the Famennian stage of the Late Devonian, a biologic event occurred (Upper Kellwasser Extinction of all ''Ancyrodella'' and '' Ozarkodina'' and most '' Palmatolepi ...

'' and ''

Ozarkodina ''Ozarkodina'' is an extinct genus of conodonts in the family Spathognathodontidae. Use in stratigraphy ''Ozarkodina snajdri'' forms a subdivision of the '' Pseudomonoclimacis'' latilobus graptolite zone in the Burgsvik beds Silurian formati ...

'' and most ''Palmatolepis'', ''

Polygnathus ''Polygnathus'' is an extinct genus of conodonts. Species * †''Polygnathus acrinodosus'' Aboussalam 2003 * †''Polygnathus alkhovikovae'' Baranov, Slavík & Blodgett 2014 * †''Polygnathus angustipennatus'' Bischoff and Ziegler 1957 * � ...

'' and ''

Ancyrognathus ''Ancyrognathus'' is an extinct genus of conodonts. During the Famennian The Famennian is the latter of two faunal stages in the Late Devonian Epoch. The most recent estimate for its duration estimates that it lasted from around 371.1 mill ...

''.

References

* Morphological variation of Palmatolepis Devonian conodonts: species versus genus. Catherine Girard, Sabrina Renaud and Aurélie Sérayet, Comptes Rendus Palevol, Volume 3, Issue 1, January 2004, Pages 1–8, (article in French) * Shape Analysis of Frasnian Species of the Late Devonian Conodont Genus Palmatolepis. Gilbert Klapper and C. T. Foster, Jr., Memoir (The Paleontological Society), Vol. 32, Supplement to Vol. 67, no. 4 of the Journal of Paleontology (Jul., 1993), pages 1–35
Stable URL
retrieved 2 May 2016)

External links

*
''Palmatolepis''
at

fossilworks Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...

.org (retrieved 2 May 2016) Ozarkodinida genera Devonian conodonts Late Devonian fish Late Devonian animals Late Devonian genus extinctions Taxa named by Klaus J. Müller Paleozoic life of Ontario {{Conodont-stub