PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Cythereis trajectiones

Ostracoda - Podocopida - Trachyleberididae

Discussion

LSID. urn:lsid:zoobank.org:act:980F6906-2D3E-4BDF-85D6-DFD7214ED2F9

Derivation of name. L. trajectiones, a crossing over, part way of passage of something, trajectory. With reference to the fact that this species crosses the CretaceousTertiary boundary.

Taxonomy

Cythereis trajectiones was named by Ceolin et al. (2015). Its type specimen is LM-FCEN 3470, a carapace, and it is a 3D body fossil. Its type locality is Cerro Azul CA 17, which is in a Danian marine siltstone in the Jagüel Formation of Argentina.

Sister species lacking formal opinion data

C. bartensteini, C. bernardi, C. bigrandis, C. buechlerae, C. coronata, C. elongata, C. fragillissima, C. garretti, C. gosportensis, C. gueltaensis, C. implicata, C. israelskyi, C. linospinosa, C. longicostata, C. malzi, C. phoenissa, C. quinquespinosa, C. reklawensis, C. sebastiensis, C. sinuata, C. smithvillensis, C. spinosa, C. splendens, C. subgoodlandensis, C. trinidadensis, C. uptonensis, C. variabilocostata

Synonymy list

Year	Name and author
2015	Cythereis trajectiones Ceolin et al.
2024	Cythereis trajectiones Ceolin et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Ecdysozoa	Aguinaldo et al. 1997
—	Panarthropoda
phylum	Arthropoda	Gravenhorst 1843
—	Deuteropoda
—	Mandibulata
—	Pancrustacea	Zrzavý and Štys 1997
—	Hymenostraca	(Rolfe 1969)

Rank	Name	Author
superclass	Oligostraca	Zrzavý et al. 1997
class	Ostracoda
subclass	Podocopa	Sars 1865
order	Podocopida	Sars 1866
suborder	Sigilliocopina	Martens 1992
superfamily	Cytheroidea	(Baird 1850)
family	Trachyleberididae	Sylvester-Bradley 1948
subfamily	Trachyleberidinae	Bradley 1948
genus	Cythereis	Jones 1849
species	trajectiones

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.

†Cythereis trajectiones Ceolin et al. 2015

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Diagnosis

Reference	Diagnosis
D. Ceolin et al. 2015	A species of Cythereis characterized by a very tuberculate dorsal rib and ventrolateral rib and the possession of club-like conjunctive tubercles on the muri that also occur on the subcentral tubercle and the median rib.

Measurements

No measurements are available

Composition:

low Mg calcitec

Environment:

hypersaline, marine, brackish, freshwaterc

Locomotion:

actively mobilec

Life habit:

epifaunalo

Diet:

detritivoreo

Diet 2:

grazero

Vision:

limitedc

Created:

2010-02-05 02:00:00

Modified:

2010-02-23 23:16:56

Source: o = order, c = class

References: Kiessling 2004, Jell and Adrain 2002

Age range: base of the Maastrichtian to the top of the Danian or 72.20000 to 61.66000 Ma

Collections (5 total)

Time interval	Ma	Country or state	Original ID and collection number
Maastrichtian	72.2 - 66.0	Argentina (Neuquén)	Cythereis trajectiones (231998)
Danian	66.0 - 61.66	Argentina (Neuquén)	Cythereis trajectiones (231999 type locality: 232000 232001 232002)