PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Polypsephis

Actinopteri - Pycnodontiformes - Pycnodontidae

Taxonomy

Polypsephis was named by Hay (1899).

It was assigned to Pycnodontidae by Hay (1899).

Species

Microdon abdominalis, Microdon analis, Microdon biserialis, Microdon discoides, Microdon elegans, Microdon hexagonus, Microdon penalvai, Microdon radiatus

Synonyms

Microdon was named by Agassiz (1833) [Homonym of an insect genus.].

It was replaced with Polypsephis by Hay (1899).

It was assigned to Pycnodontidae by Cope (1878) and Woodward (1895).

Synonymy list

Year	Name and author
1833	Microdon Agassiz p. 16 figs. Vol I, Pl G, fig 3
1878	Microdon Cope p. 298
1895	Microdon Woodward p. 221
1899	Polypsephis Hay p. 788

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()

Rank	Name	Author
superclass	Actinopterygii	()
class	Actinopteri	()
subclass	Neopterygii	(Regan 1923)
order	Pycnodontiformes	Berg 1937
suborder	Pycnodontoidei
family	Pycnodontidae	()
genus	Polypsephis

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Polypsephis Hay 1899

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Invalid names: Microdon Agassiz 1833 [replaced]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

marinesubp

Locomotion:

actively mobileo

Life habit:

nektonico

Diet:

durophageo

Diet 2:

carnivoreo

Created:

2009-07-20 21:40:08

Modified:

2013-12-06 12:04:31

Source: o = order, subp = subphylum

References: Hendy et al. 2009, Carroll 1988

Age range: base of the Bathonian to the top of the Maastrichtian or 168.30000 to 66.00000 Ma

Collections (8 total)

Time interval	Ma	Country or state	Original ID and collection number
Bathonian	168.3 - 166.1	United Kingdom	Mesodon biserialis (131844) Mesodon discoides (131999)
Late/Upper Oxfordian	161.2 - 155.7	France (Basse-Normandie)	Microdon sp. (74916)
Late/Upper Kimmeridgian	155.7 - 150.8	France (Aquitaine)	Microdon hugii (94532)
Late/Upper Barremian	130.0 - 125.45	Spain (Cuenca)	Microdon sp. (61319)
Barremian - Early/Lower Aptian	129.4 - 122.46	Belgium (Sauerland)	Microdon sp. (22645)
Late/Upper Aptian	122.46 - 113.0	Brazil (Ceará)	Microdon penalvai (92290)
Maastrichtian	72.1 - 66.0	Portugal (Coimbra)	Microdon sp. (49228)