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Ptyocephalus ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	3267133	https://www.gbif.org/species/3267133
PaleoBioDB ID (PBDB)	85327	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=85327

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Ptyocephalus

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Bilateria
-	Eubilateria	Ax 1987
-	Protostomia	Grobben 1908
-	Ecdysozoa
-	Panarthropoda
phylum	Arthropoda	Latreille 1829
subphylum	Mandibulata
class	Trilobita	Walch 1771
order	Asaphida	Salter 1864
superfamily	Asaphoidea	Salter 1864
family	Asaphidae	Burmeister 1843
genus	Ptyocephalus	Whittington 1948

Scientific Name

Ptyocephalus Whittington, 1948

Name Published In

J. Paleont., 22

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Ptyocephalus	genus	misspelling of Ptyocephalus	stated without evidence	Lochman, 1966
Ptyocephalus	genus	belongs to Isotelinae	stated without evidence	Fortey, 1975
Ptyocephalus	genus	belongs to Asaphida	second hand	Sepkoski, 2002
Ptyocephalus	genus	belongs to Asaphidae	stated with evidence	Jell and Adrain, 2002
Ptyocephalus	genus	belongs to Asaphidae	implied	Peters, 2003

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

488 - 479 Ma
Paleozoic

Last Recorded Appearance

458 - 453 Ma
Ordovician

Environment

marine (based on Trilobita)

Motility

fast-moving (based on Asaphida)

Vision

well-developed (based on Asaphidae)

Diet

deposit feeder (based on Asaphida)

Ontogeny

molting,addition of parts (based on Trilobita)

Ecospace Comments

BODY SIZE: Data from Harrington et al. (1959).

Taphonomy

low Mg calcite, chitin (based on Trilobita)

Primary Reference (PBDB)

L. Agassiz. 1843. Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Kirkella declevita ✝ species	listed (PBDB)		26	485 Ma Cambrian	479 Ma Early/Lower Ordovician
Kirkella fillmorensis ✝ species	accepted (GBIF) listed (PBDB)		4	485 Ma Cambrian	485 Ma Cambrian
Kirkella yersini ✝ species	accepted (GBIF) listed (PBDB)
Ptyocephalus accliva ✝ species	listed (PBDB)		6	479 Ma Early/Lower Ordovician	479 Ma Early/Lower Ordovician
Ptyocephalus montanensis species	accepted (GBIF)	No associated record in PBDB
Ptyocephalus vigilans ✝ species	accepted (GBIF) listed (PBDB)		5	488 Ma Cambrian	479 Ma Early/Lower Ordovician

Synonymy List

Year	Name and Author
1843	Ptychocephalus Agassiz p. 178
1942	Kirkella Kobayashi
1975	Ptyocephalus Fortey
2002	Kirkella Jell and Adrain p. 294
2002	Ptyocephalus Jell and Adrain p. 436
2002	Ptychocephalus Sepkoski, Jr.
2003	Ptyocephalus Peters

References

Agassiz L. , Recherches Sur Les Poissons Fossiles. Tome I (livr. 18). Imprimerie de Petitpierre, Neuchatel, xxxii-188

Fortey R. A. (1975) The Ordovician trilobites of Spitsbergen. II. Asaphidae, Nileidae, Raphiophoridae and Telephinidae of the Valhollfonna Formation, Norsk Polarinstitutt, Skrifter 162, 1-125

Jell P. A., Adrain J. M. (2002) Available generic names for trilobites, Memoirs of the Queensland Museum 48 2, 331-553

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560

Peters S. E. (2003) Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective, The University of Chicago, 1-279

GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera

NZ cross ref or inferred from publ. title - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

as per family - via The Interim Register of Marine and Nonmarine Genera

J. Paleont., 22 - via The Interim Register of Marine and Nonmarine Genera

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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