PBDB Taxon

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

Jacobella

Cephalopoda - Ammonitida - Hildoceratidae

Taxonomy

Jacobella was named by Jeannet (1908).

It was assigned to Bouleiceratinae by Howarth (2013).

Species

J. lugeoni, Oxyparoniceras (Neoparoniceras), Oxyparoniceras (Oxyparoniceras), Oxyparoniceras telemachi

Synonyms

Oxyparoniceras is a genus. It is not extant.

It was synonymized subjectively with Jacobella by Howarth (2013).

It was assigned to Ammonoidea by Sepkoski (2002).
Neoparoniceras was named by Rulleau et al. (2003).

It was synonymized subjectively with Jacobella by Howarth (2013).

Synonymy list

Year	Name and author
1908	Jacobella Jeannet
2002	Oxyparoniceras Sepkoski
2003	Neoparoniceras Rulleau et al.
2013	Jacobella Howarth p. 81

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

Rank	Name	Author
subclass	Ammonoidea	()
order	Ammonitida
suborder	Ammonitina	Hyatt 1889
superfamily	Hildoceratoidea	(Hyatt 1867)
family	Hildoceratidae	Hyatt 1867
subfamily	Bouleiceratinae	Arkell 1950
genus	Jacobella	Jeannet 1908

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. †Jacobella Jeannet 1908

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†Jacobella lugeoni Jeannet 1908

Invalid names: Neoparoniceras Rulleau et al. 2003 [synonym], Oxyparoniceras [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	6	11.0	5.60	22.0	12.6	6.19
shell diameter	6	21.6	13.6	43.0	21.9	10.9
shell inflation	6	3.94	2.50	7.00	3.95	1.58

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 2003, Kiessling 2004

Age range: Late/Upper Toarcian or 180.10000 to 175.60000 Ma

Collections (10 total)

Time interval	Ma	Country or state	Original ID and collection number
Toarcian	182.7 - 174.1	France	Paroniceras undulosum (210864 210878)
Levesquei	182.0 - 175.6	France (Deux-Sevrès)	Oxyparoniceras buckmani, Oxyparoniceras suevicum (140875) Oxyparoniceras suevicum (140876)
Levesquei	182.0 - 175.6	France (Vendée)	Oxyparoniceras buckmani, Oxyparoniceras suevicum, Oxyparoniceras morbiense (147218)
Late/Upper Toarcian	180.1 - 175.6	France	Oxyparoniceras suevica (161678) Oxyparoniceras suevica, Oxyparoniceras evolutum, Oxyparonicersa brocardi (161677) Oxyparoniceras suevicum (124180) Oxyparoniceras telemachi, Oxyparonicersa undulosum (161668)
Thouarsense	180.1 - 175.6	Hungary	Oxyparoniceras telemachi (108590)