PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Dactylioceras (Orthodactylites) directum

Cephalopoda - Ammonitida - Dactylioceratidae

Taxonomy

Orthodactylites directus was named by Buckman (1926).

It was recombined as Dactylioceras (Orthodactylites) directum by Kovács (2011).

Sister species lacking formal opinion data

D. aequistriatum, D. alpestre, D. anguinum, D. annulatum, D. comptum, D. hoelderi, D. semicelatum, D. tenuicostatum, D. verme, D. aequistriatum, D. clevelandicum, D. ernsti, D. helianthoides, D. hoelderi, D. semicelatum, D. tenuicostatum, D. tenuicostatum, D. verme

Synonyms

Orthodactylites mitis was named by Buckman (1927).

It was synonymized subjectively with Dactylioceras (Orthodactylites) directum by Kovács (2011).

Synonymy list

Year	Name and author
1926	Orthodactylites directus Buckman figs. Pl 654
1927	Orthodactylites mitis Buckman figs. Pl 738
2011	Dactylioceras (Orthodactylites) directum Kovács p. 16 figs. Pl 4, fig 5

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Protostomia
—	Spiralia
superphylum	Lophotrochozoa
phylum	Mollusca
class	Cephalopoda	Cuvier 1797
subclass	Ammonoidea	()

Rank	Name	Author
order	Ammonitida	Haeckel 1866
suborder	Ammonitina	Hyatt 1889
superfamily	Eoderoceratoidea	(Spath 1929)
family	Dactylioceratidae	Hyatt 1867
subfamily	Dactylioceratinae	Hyatt 1867
genus	Dactylioceras	Hyatt 1867
subgenus	Orthodactylites	(Buckman 1926)
species	directum	(Buckman 1926)

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.

†Dactylioceras (Orthodactylites) directum Buckman 1926

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Invalid names: Orthodactylites mitis Buckman 1927 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean
shell height	1	20.0
shell diameter	1	75.0

Composition:

aragoniteo

Environment:

marinec

Locomotion:

fast-movingo

Life habit:

nektonico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:27:03

Modified:

2009-10-08 14:14:55

Source: o = order, c = class

References: Kiessling 2004, Kiessling 2003

Age range: Falciferum or 184.20000 to 182.90000 Ma

Collections (2 total)

Time interval	Ma	Country or state	Original ID and collection number
Falciferum	184.2 - 182.9	Hungary	Dactylioceras directum (148250 148268)