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Desmoceras
Taxonomy
Desmoceras was named by Zittel (1884) [Sepkoski's age data: K Apti-u K Turo Sepkoski's reference number: 730]. It is the type genus of Desmoceratidae, Desmocerataceae.
It was assigned to Desmoceratidae by Whitehouse (1928), Reyment (1955), Benavides-Caceres (1956), Cobban (1972), Henderson (1990), Matsumoto and Skwarko (1993); to Ammonoidea by Stanton (1895), Sepkoski (2002); and to Desmoceratinae by Matsumoto (1959), Förster (1975), Cooper (1978), Cooper and Kennedy (1979), Wright and Kennedy (1984), Kennedy et al. (1988), Kennedy (1994), Wright et al. (1996), Arkadiev et al. (2000), Szives (2007), Kennedy and Latil (2007), Kennedy and Klinger (2013), Kennedy (2013), Kennedy and Morris (2018), El Qot (2018), Gautam et al. (2019), Yoshinaga et al. (2024).
It was assigned to Desmoceratidae by Whitehouse (1928), Reyment (1955), Benavides-Caceres (1956), Cobban (1972), Henderson (1990), Matsumoto and Skwarko (1993); to Ammonoidea by Stanton (1895), Sepkoski (2002); and to Desmoceratinae by Matsumoto (1959), Förster (1975), Cooper (1978), Cooper and Kennedy (1979), Wright and Kennedy (1984), Kennedy et al. (1988), Kennedy (1994), Wright et al. (1996), Arkadiev et al. (2000), Szives (2007), Kennedy and Latil (2007), Kennedy and Klinger (2013), Kennedy (2013), Kennedy and Morris (2018), El Qot (2018), Gautam et al. (2019), Yoshinaga et al. (2024).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Desmoceras Zittel |
| 1895 | Desmoceras Stanton p. 75 |
| 1923 | Eodesmoceras Spath |
| 1925 | Phyllodesmoceras Spath |
| 1928 | Desmoceras Whitehouse p. 200 |
| 1947 | Lunatodorsella Breistroffer p. 76 |
| 1955 | Desmoceras Reyment p. 17 |
| 1956 | Desmoceras Benavides-Caceres p. 438 |
| 1959 | Desmoceras Matsumoto p. 6 |
| 1972 | Desmoceras Cobban p. 5 |
| 1975 | Desmoceras Förster p. 215 |
| 1978 | Desmoceras Cooper p. 79 |
| 1979 | Desmoceras Cooper and Kennedy p. 237 |
| 1984 | Desmoceras Wright and Kennedy p. 61 |
| 1988 | Desmoceras Kennedy et al. p. 36 |
| 1990 | Desmoceras Henderson p. 111 |
| 1993 | Desmoceras Matsumoto and Skwarko p. 418 |
| 1994 | Desmoceras Kennedy p. 219 |
| 1996 | Desmoceras Wright et al. p. 82 |
| 2000 | Desmoceras Arkadiev et al. p. 107 |
| 2002 | Desmoceras Sepkoski |
| 2002 | Eodesmoceras Sepkoski |
| 2007 | Desmoceras Kennedy and Latil p. 458 |
| 2007 | Desmoceras Szives p. 56 |
| 2013 | Desmoceras Kennedy p. 632 |
| 2013 | Desmoceras Kennedy and Klinger p. 39 |
| 2018 | Desmoceras El Qot p. 155 |
| 2018 | Desmoceras Kennedy and Morris p. 90 |
| 2019 | Desmoceras Gautam et al. p. 20 |
| 2024 | Desmoceras Yoshinaga et al. p. 473 |
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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. †Desmoceras Zittel 1884
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Subg. †Desmoceras (Desmoceras) Zittel 1884
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†Desmoceras (Desmoceras) latidorsatum Michelin 1838
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†Desmoceras (Desmoceras) latidorsatum complanatum Jacob 1907
†Desmoceras (Desmoceras) latidorsatum lemoinei Collignon 1928
Invalid names: Ammonites selliguinus Brongniart 1822 [synonym]
†Desmoceras (Desmoceras) latidorsatum perinflatum Cooper and Kennedy 1979
Subg. †Desmoceras (Pseudouhligella) Matsumoto 1938
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†Desmoceras (Pseudoughligella) bearskinense McLearn 1972
†Desmoceras (Pseudoughligella) dawsoni Whiteaves 1900
†Desmoceras (Pseudoughligella) subezoanum McLearn 1972
†Desmoceras (Pseudouhligella) alamoense Anderson 1958
†Desmoceras (Pseudouhligella) argonauticum Anderson 1958
†Desmoceras (Pseudouhligella) barryae Anderson 1958
†Desmoceras (Pseudouhligella) bearskinense McLearn 1972
†Desmoceras (Pseudouhligella) calabarense Reyment 1955
†Desmoceras (Pseudouhligella) ezoanum Matsumoto 1941
†Desmoceras (Pseudouhligella) intrapunctatum Keupp 2008
†Desmoceras (Pseudouhligella) japonicum Yabe 1904
†Desmoceras (Pseudouhligella) poronaicum Yabe 1904
†Desmoceras (Pseudouhligella) shikokuense Yabe and Shimizu 1927
†Desmoceras (Pseudouhligella) vetus Murphy and Rodda 1959
†Desmoceras chimuense Benavides-Caceres 1956
†Desmoceras difficile d'Orbigny 1840
†Desmoceras hoffmanni Gabb 1864
†Desmoceras inane Stoliczka 1865
†Desmoceras kossmati Matsumoto 1942
†Desmoceras nabdalsa Coquand 1880
†Desmoceras planorbiforme Böhm 1891
†Desmoceras pseudinane Shimizu 1935
†Desmoceras seguenzae Coquand 1880
†Desmoceras voyi Anderson 1902
Invalid names: Eodesmoceras Spath 1923 [synonym], Latidorsella Jacob 1907 [synonym], Lunatodorsella Breistroffer 1947 [synonym], Phyllodesmoceras Spath 1925 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 16 | 16.2 | 6.00 | 54.5 | 17.3 | 16.5 | |
| shell diameter | 16 | 32.8 | 12.1 | 117.0 | 32.1 | 34.6 | |
| shell inflation | 16 | 5.67 | 1.60 | 28.0 | 5.50 | 7.58 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Hauterivian to the top of the Late/Upper Campanian or 132.60000 to 72.20000 Ma
Collections (270 total)
Oldest occurrences | |||
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cretaceous | Canada (British Columbia) | D. sp. (235329) | |
| Hauterivian | Morocco | D. sp. (240073) | |
| Hauterivian - Barremian | Slovakia | Barremites difficilis (2061) | |
| Barremian | Morocco | D. nabdalsa (240071) | |
| Barremian | Austria | Barremites difficilis (169049) | |
| Barremian | Georgia | Barremites difficilis (2115) | |
| Barremian | Italy | Barremites difficilis (50809) | |
| Barremian | Austria (Ternberg) | Barremites difficilis (50788 50789 50791 50792) | |
| Barremian | France (Provence) | Barremites difficilis (56058 56067 56782 56788) | |
| Early/Lower Barremian | Morocco | D. difficile, D. seguenzae (240072) D. difficile, D. seguenzae, D. nabdalsa (240075) | |
Youngest occurrences |
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| Time interval | Ma | Country or state | PBDB collection number |
| Middle Cenomanian | France | D. latidorsatum (82843) | |
| Middle Cenomanian | USA (New Mexico) | D. sp. (178790) | |
| Middle Cenomanian | Turkmenistan | D. latidorsatum (183307) | |
| Middle Cenomanian | USA (California) | D. japonicum (224960) | |
| Middle Cenomanian | Nigeria | D. sp. (69628 69629 69630) | |
| Middle Cenomanian | Papua New Guinea | D. ezoanum (174846) | |
| Middle Cenomanian - Late/Upper Cenomanian | Antarctica | D. sp., Pseudouhligella sp. (106266) | |
| Early/Lower Turonian | Russian Federation | D. japonicum (84218) | |
| Turonian - Coniacian | USA (Alaska) | D. japonicum (88938) D. sp. (88934) | |
| Late/Upper Campanian | Germany | D. planorbiforme (221859) | |