PBDB Taxon

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Syngastrioceras

Cephalopoda - Goniatitida - Glaphyritidae

Taxonomy

Syngastrioceras was named by Librovitch (1938) [Sepkoski's age data: C Serp-l C u Sepkoski's reference number: 302,304]. It is not extant.

It was assigned to Neoicoceratinae by Titus (2000); to Goniatitida by Sepkoski (2002); to Glaphyritinae by Titus (1997), Furnish et al. (2009); and to Glaphyritidae by Korn (2006), Korn and Sudar (2016).

Species lacking formal opinion data

S. paraglobosum

Synonyms

Pseudoglaphyrites was named by Ruzhentsev and Bogoslovskaya (1971) [Sepkoski's age data: C Serp-l Sepkoski's reference number: 304].

It was synonymized subjectively with Syngastrioceras by Furnish et al. (2009).

It was assigned to Goniatitida by Sepkoski (2002); and to Glaphyritidae by Korn (2006).
Neogastrioceras was named by Nassichuk (1975). Its type is Neogastrioceras arcticum.

It was synonymized subjectively with Syngastrioceras by Furnish et al. (2009).

It was assigned to Clistoceratidae by Korn (2006).

Synonymy list

Year	Name and author
1938	Syngastrioceras Librovitch
1971	Pseudoglaphyrites Ruzhentsev and Bogoslovskaya p. 292
1975	Neogastrioceras Nassichuk p. 95
1997	Syngastrioceras Titus p. 160
2000	Syngastrioceras Titus pp. 41 - 42
2002	Pseudoglaphyrites Sepkoski
2002	Syngastrioceras Sepkoski
2006	Neogastrioceras Korn
2006	Pseudoglaphyrites Korn
2006	Syngastrioceras Korn
2009	Syngastrioceras Furnish et al. p. 83
2016	Syngastrioceras Korn and Sudar p. 210

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

Rank	Name	Author
class	Cephalopoda	Cuvier 1797
subclass	Ammonoidea	()
order	Goniatitida	Hyatt 1884
suborder	Goniatitina	Hyatt 1884
superfamily	Gastrioceratoidea	()
family	Glaphyritidae
genus	Syngastrioceras	Librovitch 1938

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. †Syngastrioceras Librovitch 1938

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†Syngastrioceras aktubense Ruzhentsev and Bogoslovskaya 1971

†Syngastrioceras cadiconiforme Wagner-Gentis 1963

†Syngastrioceras clinei Miller and Owen 1937

†Syngastrioceras constrictum Nassichuk 1975

†Syngastrioceras dronovi Ruzhentsev and Bogoslovskaya 1978

†Syngastrioceras europaeum Kullmann 1962

†Syngastrioceras glaphyritoides Ruzhentsev and Bogoslovskaya 1978

†Syngastrioceras globosum Easton 1943

†Syngastrioceras globulosum Meek and Worthen 1860

†Syngastrioceras laxumbilicale Ruzhentsev and Bogoslovskaya 1971

†Syngastrioceras oblatum Miller and Moore 1938

†Syngastrioceras orientale Yin 1935

†Syngastrioceras parasupinum Ruzhentsev and Bogoslovskaya 1978

†Syngastrioceras pseudomalhamense Kullmann 1962

†Syngastrioceras scotti Miller and Youngquist 1948

†Syngastrioceras sholakensis Ruzhentsev and Bogoslovskaya 1971

†Syngastrioceras smithwickense Miller and Unklesbay 1942

†Syngastrioceras suborientale Yin 1935

†Syngastrioceras supinum Ruzhentsev and Bogoslovskaya 1978

†Syngastrioceras ukrainicus Librovitch 1939

†Syngastrioceras websteri Titus 2000

Invalid names: Neogastrioceras Nassichuk 1975 [synonym], Pseudoglaphyrites Ruzhentsev and Bogoslovskaya 1971 [synonym]

Diagnosis

Reference	Diagnosis
A. L. Titus 2000	Glaphyritids (neoicoceratins) with no ophio- conic phase, moderately wide to narrow umbilici, a wide ventral lobe with swollen ventral prongs and a frequently constricted base, and a prominent single spiral cord on each umbilical shoulder. Ornament usually broadly prosiradiate over the ventral region,

Measurements

part	N	mean	minimum	maximum	median	s.d.
shell height	38	7.93	1.50	28.0	8.45	6.47
shell diameter	38	22.2	5.10	80.5	20.5	19.3
shell inflation	38	8.62	3.00	35.0	8.50	7.74

Composition:

aragoniteo

Environment:

marinec

Locomotion:

fast-movingo

Life habit:

nektonico

Diet:

carnivoreo

Vision:

well-developedc

Created:

2005-01-28 02:36:55

Modified:

2005-10-06 16:36:08

Source: o = order, c = class

References: Kiessling 2003, Kiessling 2004

Age range: base of the Pendleian to the top of the Gzhelian or 330.30000 to 298.90000 Ma

Collections (105 total)

Time interval	Ma	Country or state	Original ID and collection number
Pendleian	330.3 - 326.9	USA (Arkansas)	Cravenoceras scotti (157837 157952 157953 157954)
Pendleian	330.3 - 326.9	USA (Texas)	S. scotti (169952)
Pendleian	330.3 - 326.9	USA (Oklahoma)	Cravenoceras scotti (160488)
Serpukhovian	330.3 - 323.4	Spain (León)	Eoasianites cadiconiformis (235670)
Serpukhovian	330.3 - 323.4	Russian Federation	S. sp. (236654 236655 236656 236657)
Arnsbergian	326.9 - 323.6	Kazakhstan	Pseudoglaphyrites sholakensis, S. laxumbilicale, S. aktubense, S. globosum (166366) S. laxumbilicale, S. globosum (166863)
Arnsbergian	326.9 - 323.6	Russian Federation (Bashkortostan)	S. globosum (166954)
Arnsbergian	326.9 - 323.6	Tajikistan	S. sp. (166972)
Arnsbergian	326.9 - 323.6	Serbia	Eoasianites europaeus (178463)
Arnsbergian	326.9 - 323.6	Russian Federation (Orenburg)	S. aktubense, S. globosum (166948) S. globosum (166934 166946) S. laxumbilicale (166932) S. sp., S. globosum (166935)
Chokierian	323.6 - 322.8	Kazakhstan	S. sp. (67718)
Morrowan	323.4 - 318.6	USA (Oklahoma)	S. oblatum (79329) S. sp. (43136)
Morrowan	323.4 - 318.6	USA (Arkansas)	Glaphyrites globosus (43386) Glaphyrites oblatus (43205 43358 43382 43384 43424 43428 43429 43430 43431 43432 43437 43438 43440) S. globosum (43097 43099 43100 43101 43102 43103 43104 43108 43109)
Bashkirian	323.4 - 315.2	Russian Federation (Verkhoyansk)	S. paraglobosum (44259 44263)
Bashkirian	323.4 - 315.2	USA (Arkansas)	Glaphyrites oblatus (157955 157957 157958 157979 158015)
Alportian	322.8 - 321.8	Tajikistan	S. dronovi (68258)
Alportian	322.8 - 321.8	Russian Federation	S. sp. (67719)
Kinderscoutian	321.8 - 321.3	Uzbekistan	S. sp. (68196 68198)
Kinderscoutian	321.8 - 321.3	Russian Federation	S. sp. (67720 67732) S. supinum (67733 67745 67746 67748 67753 67759 67764)
Yeadonian	320.0 - 318.7	Uzbekistan	S. glaphyritoides (68204 68208 68211) S. parasupinum, S. glaphyritoides (68210) S. supinum, S. parasupinum, S. glaphyritoides (38723 68201 68205 68206)
Yeadonian	320.0 - 318.7	USA (Nevada)	S. sp. (170865)
Westphalian A	318.7 - 316.9	Canada (Nunavut)	S. oblatum (170658)
Moscovian	315.2 - 307.0	Canada (Nunavut)	Neogastrioceras arcticum (170671 170698) Neogastrioceras sp. (170711 170717) Neogastrioceras sp., S. constrictum (170714 170715) S. constrictum (62652 170669 170702 170703 170704 170710) S. constrictum, Neogastrioceras arcticum (170668 170672) S. orientale (170708) S. orientale, S. constrictum (170719) S. sp. (62646 170665 170670 170701 170706 170707) S. sp., Neogastrioceras sp. (170712)
Kasimovian	307.0 - 303.7	USA (Oklahoma)	Gastrioceras clinei (170338)
Gzhelian	303.7 - 298.9	USA (Texas)	Glaphyrites globulosus (128581 128584 128678 131325)