PBDB Taxon

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

Drepanoistodus costatus

Conodonta - Conodontophorida - Drepanoistodontidae

Taxonomy

Drepanodus costatus was named by Abaimova (1971).

It was recombined as Drepanoistodus costatus by Zhen et al. (2009).

Sister species lacking formal opinion data

D. angulensis, D. arcuatus, D. chuealeznensis, D. concavus, D. contractus, D. expansus, D. foreeps, D. inaequalis, D. minutus, D. nowlani, D. nowlani, D. pervetus, D. stougei, D. subrectus

Synonyms

Scolopodus cornutiformis was named by Lee (1976).

It was synonymized subjectively with Drepanoistodus costatus by Zhen et al. (2009).
Scolopodus flexilis was named by An (1981).

It was synonymized subjectively with Drepanoistodus costatus by Zhen et al. (2009).
Scolopodus ordosensis was named by Wang and Luo (1984). It is a 3D body fossil.

It was synonymized subjectively with Drepanoistodus costatus by Zhen et al. (2009).

Synonymy list

Year	Name and author
1971	Drepanodus costatus Abaimova p. 490 figs. pl. 10, fig. 6, text-fig. 3
1976	Scolopodus cornutiformis Lee p. 172 figs. pl. 2, fig. 18
1981	Scolopodus flexilis An p. 216 figs. pl. 3, figs 1, 2
1984	Scolopodus ordosensis Wang and Luo p. 284 figs. pl. 4, figs 22, 23. Scolopodus ordosensis; Wang & Luo, p. 284, pl. 4, figs 22, 23
2009	Drepanoistodus costatus Zhen et al. pp. 35 - 37 figs. 6A-P

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

Rank	Name	Author
order	Conodontophorida
class	Conodonta	Pander 1856
order	Protopanderodontida
family	Drepanoistodontidae	(Fahraeus and Nowlan 1978)
genus	Drepanoistodus	Lindstrom 1971
species	costatus	(Abaimova 1971)

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.

†Drepanoistodus costatus Abaimova 1971

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Invalid names: Drepanoistodus cornutiformis Lee 1976 [synonym], Drepanoistodus flexilis An 1981 [synonym], Drepanoistodus ordosensis Wang and Luo 1984 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

hydroxyapatitec

Environment:

marinesubp

Locomotion:

actively mobilec

Life habit:

nektonicc

Diet:

carnivorec

Vision:

well-developedc

Created:

2005-02-03 07:48:42

Modified:

2010-02-12 04:00:46

Source: c = class, subp = subphylum

References: Carroll 1988, Aberhan 1992

Age range: Darriwilian or 469.40000 to 458.20000 Ma

Collections (22 total)

Time interval	Ma	Country or state	Original ID and collection number
Middle Ordovician	471.3 - 458.2	Malaysia	Drepanoistodus costatus (186192 186193 186195 186199)
Darriwilian	469.4 - 458.2	New Zealand	Drepanoistodus costatus (210509)
Darriwilian	469.4 - 458.2	Kazakhstan	Drepanoistodus costatus (220540)
Darriwilian	469.4 - 458.2	China (Inner Mongolia)	Drepanoistodus costatus (223102)
Darriwilian	469.4 - 458.2	Argentina	Drepanoistodus costatus (210374 210376 210377 210378 210388 210390 210391 210392 210416 210420 210451 210452 210453 210456 210460)