PBDB Taxon

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

Pseudaspidites muthianus

Cephalopoda - Ceratitida - Proptychitidae

Taxonomy

Aspidites muthianus was named by Krafft and Diener (1909).

It was recombined as Clypeoceras muthianum by Smith (1932); it was recombined as Pseudaspidites muthianus by Spath (1934), Kummel (1969), Brayard and Bucher (2008), Brühwiler et al. (2012), Brühwiler and Bucher (2012), Brühwiler and Bucher (2012), Shigeta and Nguyen (2014).

Sister species lacking formal opinion data

P. lenticularis

Synonyms

Pseudaspidites lolouensis was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Pseudaspidites kwangsianus was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Pseudaspidites simplex was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Pseudaspidites stenosellatus was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Pseudaspidites aberrans was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Pseudaspidites longisellatus was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Proptychites angusellatus was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Proptychites sinensis was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Proptychites latilobatus was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Proptychites abnormalis was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Clypeoceras lenticulare was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).
Clypeoceras tsotengense was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008).
Pseudohedenstroemia magna was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008).
Clypeoceras kwangsiense was named by Chao (1959).

It was synonymized subjectively with Pseudaspidites muthianus by Brayard and Bucher (2008), Shigeta and Nguyen (2014).

Synonymy list

Year	Name and author
1909	Aspidites muthianus Krafft and Diener
1932	Clypeoceras muthianum Smith
1934	Pseudaspidites muthianus Spath
1959	Clypeoceras lenticulare Chao
1959	Clypeoceras tsotengense Chao
1959	Proptychites abnormalis Chao
1959	Proptychites angusellatus Chao
1959	Proptychites latilobatus Chao
1959	Proptychites sinensis Chao
1959	Pseudaspidites aberrans Chao
1959	Pseudaspidites kwangsianus Chao
1959	Pseudaspidites lolouensis Chao
1959	Pseudaspidites longisellatus Chao
1959	Pseudaspidites simplex Chao
1959	Pseudaspidites stenosellatus Chao
1959	Pseudohedenstroemia magna Chao
1959	Clypeoceras kwangsiense Chao p. 226 figs. Pl 17, figs 1,2; text-fig 19a
1969	Pseudaspidites muthianus Kummel
2008	Pseudaspidites muthianus Brayard and Bucher p. 33 figs. Pl 10, figs 1-10; pl 11, figs 1-4
2012	Pseudaspidites muthianus Brühwiler and Bucher p. 17 figs. Pl 3, figs 3-5
2014	Pseudaspidites muthianus Shigeta and Nguyen p. 78 figs. 53-56

Is something missing? Join the Paleobiology Database and enter the data

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
suborder	Meekoceratina
superfamily	Meekoceratoidea	Waagen 1895
family	Proptychitidae	Waagen 1895
genus	Pseudaspidites
species	muthianus	(Krafft and Diener 1909)

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.

†Pseudaspidites muthianus Krafft and Diener 1909

show all | hide all

Invalid names: Clypeoceras kwangsiense Chao 1959 [synonym], Clypeoceras lenticulare Chao 1959 [synonym], Clypeoceras tsotengense Chao 1959 [synonym], Proptychites abnormalis Chao 1959 [synonym], Proptychites angusellatus Chao 1959 [synonym], Proptychites latilobatus Chao 1959 [synonym], Proptychites sinensis Chao 1959 [synonym], Pseudaspidites aberrans Chao 1959 [synonym], Pseudaspidites kwangsianus Chao 1959 [synonym], Pseudaspidites lolouensis Chao 1959 [synonym], Pseudaspidites longisellatus Chao 1959 [synonym], Pseudaspidites simplex Chao 1959 [synonym], Pseudaspidites stenosellatus Chao 1959 [synonym], Pseudohedenstroemia magna Chao 1959 [synonym]

Diagnosis

No diagnoses are available

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	17	28.3	9.00	74.0	27.5	16.8
shell diameter	17	55.3	16.0	132.0	56.4	31.0
shell inflation	17	8.57	4.00	17.0	8.50	4.17

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 2003, Kiessling 2004

Age range: Smithian or 249.90000 to 248.10000 Ma

Collections (43 total)

Time interval	Ma	Country or state	Original ID and collection number
Dienerian - Spathian	250.5 - 246.7	China	Pseudaspidites lolouensis, Pseudaspidites aberrans (44006)
Smithian	249.9 - 248.1	China (Guangxi)	Pseudaspidites kwangsianus, Pseudaspidites simplex (44002) Pseudaspidites muthianus (97135 97136 97142 97144 97145 97147 97148 97149 97150 97151 97152 97153 97154 97155 97156 97180 97183 97184 97193 97194) Pseudaspidites simplex (44012) Pseudaspidites stenosellatus, Proptychites sinensis (44016)
Smithian	249.9 - 248.1	Oman	Pseudaspidites muthianus (127429 127431 127432)
Smithian	249.9 - 248.1	Vietnam	Pseudaspidites muthianus (155480 155481 155482 155485 155487)
Smithian	249.9 - 248.1	China (Xizang)	Pseudaspidites muthianus (229716 229749 229750 229790) Pseudaspidites sp. (97327 97360)
Smithian	249.9 - 248.1	Pakistan	Pseudaspidites muthianus (139086)
Smithian	249.9 - 248.1	China (Gunagxi)	Pseudaspidites simplex, Pseudaspidites longisellatus, Proptychites angusellatus, Proptychites latilobatus, Pseudohedenstroemia magna, Clypeoceras kwangsiense (44014) Ussuriceras sp. (44000)
Smithian	249.9 - 248.1	India (Himachal Pradesh)	Pseudaspidites muthianus (139647 139670)