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Bostrychoceras
Taxonomy
Bostrychoceras was named by Hyatt (1900) [Sepkoski's age data: K Ceno K Maes-u]. Its type is Turrilites polyplocus. It is the type genus of Bostrychoceratinae.
It was reranked as Nostoceras (Bostrychoceras) by Kennedy (1986) and Küchler and Odin (2001).
It was assigned to Bostrychoceratidae by Brunnschweiler (1966); to Baculitidae by Klinger (1985); to Nostoceratinae by Arkadiev et al. (2000); to Nostoceras by Kennedy (1986) and Küchler and Odin (2001); to Ammonoidea by Sepkoski (2002); and to Nostoceratidae by Wright (1952), Reyment (1955), Benavides-Caceres (1956), Matsumoto (1959), Atabekyan and Khakimov (1976), Kennedy and Summesberger (1999), Kennedy et al. (2000) and Ifrim et al. (2015).
It was reranked as Nostoceras (Bostrychoceras) by Kennedy (1986) and Küchler and Odin (2001).
It was assigned to Bostrychoceratidae by Brunnschweiler (1966); to Baculitidae by Klinger (1985); to Nostoceratinae by Arkadiev et al. (2000); to Nostoceras by Kennedy (1986) and Küchler and Odin (2001); to Ammonoidea by Sepkoski (2002); and to Nostoceratidae by Wright (1952), Reyment (1955), Benavides-Caceres (1956), Matsumoto (1959), Atabekyan and Khakimov (1976), Kennedy and Summesberger (1999), Kennedy et al. (2000) and Ifrim et al. (2015).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1900 | Bostrychoceras Hyatt |
| 1952 | Bostrychoceras Wright |
| 1955 | Bostrychoceras Reyment p. 15 |
| 1956 | Bostrychoceras Benavides-Caceres p. 437 |
| 1959 | Bostrychoceras Matsumoto pp. 158 - 159 |
| 1966 | Bostrychoceras Brunnschweiler p. 16 |
| 1976 | Bostrychoceras Atabekyan and Khakimov p. 52 |
| 1985 | Bostrychoceras Klinger p. 5 |
| 1986 | Nostoceras (Bostrychoceras) Kennedy p. 92 |
| 1999 | Bostrychoceras Kennedy and Summesberger p. 26 |
| 2000 | Bostrychoceras Arkadiev et al. p. 117 |
| 2000 | Bostrychoceras Kennedy et al. p. 6 |
| 2001 | Nostoceras (Bostrychoceras) Küchler and Odin p. 501 |
| 2002 | Bostrychoceras Sepkoski |
| 2015 | Bostrychoceras Ifrim et al. p. 242 |
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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. †Bostrychoceras Hyatt 1900
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†Bostrychoceras brewerii Gabb 1864
†Bostrychoceras californicum Anderson 1958
†Bostrychoceras columbianum Anderson 1958
†Bostrychoceras declive Gabb 1864
†Bostrychoceras elongatum Whiteaves 1903
†Bostrychoceras indicum Stolickza 1866
†Bostrychoceras occidentale Anderson 1958
†Bostrychoceras otsukai Yabe 1904
†Bostrychoceras polyplocum Roemer 1841
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Invalid names: Bostrychoceras secoense Young 1963 [synonym]
†Bostrychoceras puertoense Anderson 1958
†Bostrychoceras sanctaeanae Anderson 1958
†Bostrychoceras serpiens Anderson 1958
†Bostrychoceras trabucoense Anderson 1958
†Bostrychoceras vermiculare Gabb 1864
Invalid names: Bostrychoceras Hyatt 1900 [objective synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Matsumoto 1959 | The whorls are spiral, typically contiguous, forming a turreted shell like Turrilites, but are sometimes slightly separated, and followed by a free, retroversal body whorl. The whorl is rounded, being subcircular to elliptical in section.
The shell is ornamented with numerous, normally simple obliqUe. and slightly sinuous ribs. There is a collared constriction along the apertural margin of the adult body whorl. The suture is florid, deeply and finely incised; L is much larger than E and deeply cut into two unequal branches, U is similar to but smaller than L;Iis small and normally trind;saddles are bifid. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: base of the Late/Upper Turonian to the top of the Early/Lower Maastrichtian or 93.50000 to 66.00000 Ma
Collections (44 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian | USA (California) | B. occidentale (44213) | |
| Late/Upper Turonian - Coniacian | USA (California) | B. indicum (225447) | |
| Coniacian | Peru | B. sp. (88132) | |
| Early/Lower Coniacian | Brazil | B. indicum (140901) | |
| Santonian | USA (California) | B. otsukai (86955 86956 224927) | |
| Late/Upper Santonian | South Africa | B. indicum (82520) | |
| Late/Upper Santonian | USA (California) | B. trabucoense, B. sanctaeanae, B. brewerii (86815) | |
| Campanian | Turkey | B. polyplocum (130883 130884) | |
| Campanian | USA (California) | Helicoceras declive, B. brewerii (44274) | |
| Late/Upper Campanian | Spain | B. polyplocum (66997 67002 67549) | |
| Late/Upper Campanian | Germany (Niedersachsen) | Nostoceras polyplocum (31993) | |
| Late/Upper Campanian | Nigeria (Enugu) | B. sp. (82733) | |
| Late/Upper Campanian | France | Nostoceras polyplocum (165854 165898 165899 165900 165901 165902) | |
| Late/Upper Campanian | Turkmenistan | B. polyplocum (183320 183321 185092 185093 185094 185095 185096 185097 185098 185099) | |
| Late/Upper Campanian | Mexico (Coahuila) | B. polyplocum (174742) | |
| Late/Upper Campanian | France (Landes) | Nostoceras polyplocum (213829 213840 213842 213845) | |
| Late/Upper Campanian | Austria | B. polyplocum (48008) | |
| Late/Upper Campanian | Germany | Nostoceras polyplocum (64215) | |
| Middle Campanian | USA (Texas) | B. polyplocum (3607 3632) | |
| Maastrichtian | USA (California) | B. elongatum (215344) | |
| Early/Lower Maastrichtian | USA (California) | B. sp. (83776) |