PBDB Taxon

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Trachyceras aon

Cephalopoda - Ceratitida - Trachyceratidae

Taxonomy

Ammonites (Ceratites) aon was named by Munster (1834).

It was recombined as Ammonites aon by Münster (1841); it was recombined as Trachyceras aon by von Mojsisovics (1882), Spath (1951) and Mietto and Manfrin (2008).

Sister species lacking formal opinion data

T. acutecostatum

Synonyms

Ammonites mirabilis was named by Klipstein (1843). It is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ammonites spinulocostatus was named by Klipstein (1843). It is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ammonites dechenii was named by Klipstein (1843). Its type specimen is BMNH C.33968 and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by Spath (1951).
Ammonites credneri was named by Klipstein (1843). Its type specimen is BMNH C.35957 and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ammonites velthemii was named by Klipstein (1843). Its type specimen is BMNH C.35959a and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ammonites larva was named by Klipstein (1843). Its type specimen is BMNH C.33695 and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ammonites armatocingulatus was named by Klipstein (1843). Its type specimen is BMNH C.35963a and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by von Mojsisovics (1882) and Spath (1951).
Ceratites meriani was named by Klipstein (1843). Its type specimen is BMNH C.35973 and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras aon by Spath (1951).
Ceratites brevicostatus was named by Klipstein (1843). Its type specimen is BMNH C.35975 and is a 3D body fossil. Its type locality is St. Cassian (Klipstein BMNH coll), which is in a Julian carbonate limestone in the Cassian Formation of Italy.

It was synonymized subjectively with Trachyceras sulciferum by von Mojsisovics (1882); it was synonymized subjectively with Trachyceras aon by Spath (1951).

Synonymy list

Year	Name and author
1834	Ammonites (Ceratites) aon Munster p. 13 figs. Pl 1, figs 4a-d
1841	Ammonites aon Münster p. 136 figs. Pl 15, fig 27
1843	Ammonites mirabilis Klipstein p. 108 figs. Pl 5, figs 2a,b
1843	Ammonites spinulocostatus Klipstein p. 112 figs. Pl 5, fig 6
1843	Ammonites dechenii Klipstein p. 118 figs. Pl 6, figs 6a-c
1843	Ammonites credneri Klipstein p. 119 figs. Pl 6, fig 10
1843	Ammonites velthemii Klipstein p. 122 figs. Pl 7, figs 3a-c
1843	Ammonites larva Klipstein p. 127 figs. Pl 7, figs 9a-c
1843	Ammonites armatocingulatus Klipstein p. 128 figs. Pl 7, figs 10a,b
1843	Ceratites brevicostatus Klipstein p. 134 figs. Pl 8, fig 6
1843	Ceratites meriani Klipstein p. 134 figs. Pl 8, figs 5a-c
1882	Trachyceras aon von Mojsisovics
1951	Trachyceras aon Spath p. 42
2008	Trachyceras aon Mietto and Manfrin

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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	Ceratitida	Hyatt 1884
superfamily	Trachyceratoidea	(Haug 1894)
family	Trachyceratidae	Haug 1894
subfamily	Trachyceratinae	Haug 1894
genus	Trachyceras	Laube 1869
species	aon	(Munster 1834)

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.

†Trachyceras aon Munster 1834

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Invalid names: Ammonites armatocingulatus Klipstein 1843 [synonym], Ammonites credneri Klipstein 1843 [synonym], Ammonites dechenii Klipstein 1843 [synonym], Ammonites larva Klipstein 1843 [synonym], Ammonites mirabilis Klipstein 1843 [synonym], Ammonites spinulocostatus Klipstein 1843 [synonym], Ammonites velthemii Klipstein 1843 [synonym], Ceratites brevicostatus Klipstein 1843 [synonym], Ceratites meriani Klipstein 1843 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

aragoniteo

Environment:

marinec

Locomotion:

actively mobileo

Life habit:

nektonico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:33:06

Modified:

2005-10-06 16:36:47

Source: o = order, c = class

References: Kiessling 2004, Kiessling 2003

Age range: base of the Ladinian to the top of the Carnian or 242.00000 to 228.00000 Ma

Collections (13 total)

Time interval	Ma	Country or state	Original ID and collection number
Ladinian	242.0 - 237.0	Italy (Trento)	Trachyceras aon (231733)
Carnian	237.0 - 228.0	Italy (South Tyrol)	Trachyceras aon (205147)
Carnian	237.0 - 228.0	Hungary (Bakony)	Trachyceras aon (203202)
Carnian	237.0 - 228.0	Italy	Trachyceras aon (212025)
Julian	235.0 - 232.0	Romania	Trachyceras aon (160170)
Julian	235.0 - 232.0	Italy	Ammonites aon (137429) Ammonites mirabilis, Ammonites spinulocostatus, Ammonites dechenii, Ammonites credneri, Ammonites velthemii, Ammonites larva, Ammonites armatocingulatus, Ceratites meriani, Ceratites brevicostatus (145649) Trachyceras aon (50872 50873 142063 142066)
Tuvalian	232.0 - 221.5	China (Guizhou)	Trachyceras aon (85166)
Tuvalian	232.0 - 221.5	Indonesia	Trachyceras aon (204272)