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Perisphinctes (Dichotomoceras)

Cephalopoda - Ammonitida - Perisphinctidae

Taxonomy
Dichotomoceras was named as a genus. It is not extant.

It was reranked as Perisphinctes (Dichotomoceras) by Atrops and Benest (1984), Schlegelmilch (1994).

It was assigned to Perisphinctes by Atrops and Benest (1984), Schlegelmilch (1994); and to Ammonoidea by Sepkoski (2002).

Subtaxa
Perisphinctes (Dichotomoceras) antrobikensis, Perisphinctes (Dichotomoceras) besairiei, Perisphinctes (Dichotomoceras) bifurcatoides, Perisphinctes (Dichotomoceras) bifurcatus, Perisphinctes (Dichotomoceras) crassus, Perisphinctes (Dichotomoceras) dichotomum, Perisphinctes (Dichotomoceras) grossouvrei, Perisphinctes (Dichotomoceras) microplicatilis, Perisphinctes (Dichotomoceras) predivisum, Perisphinctes (Dichotomoceras) prowitteanus, Perisphinctes (Dichotomoceras) sparsicostatum, Perisphinctes (Dichotomoceras) stenocycloides, Perisphinctes (Dichotomoceras) virguloides
Species lacking formal opinion data
Dichotomoceras cliqueti, Dichotomoceras quadratum, Dichotomoceras rabenjanaharyi, Dichotomoceras umbilicatum, Perisphinctes A, Perisphinctes B, Perisphinctes africanus, Perisphinctes alatus, Perisphinctes andelotensis, Perisphinctes andium, Perisphinctes anguiculus, Perisphinctes buckmani, Perisphinctes buckmanni, Perisphinctes crassissimus, Perisphinctes dacquei, Perisphinctes densecostatus, Perisphinctes dorsoplanus, Perisphinctes eucostatus, Perisphinctes luciaeformis, Perisphinctes mairei-matheyi, Perisphinctes malinowskae, Perisphinctes panderi, Perisphinctes patturatensis, Perisphinctes pickeringius, Perisphinctes polygyratus, Perisphinctes polygyratus, Perisphinctes praestenocyclus, Perisphinctes progeron, Perisphinctes pumilus, Perisphinctes quadratus, Perisphinctes quadratus, Perisphinctes roedereri, Perisphinctes scythicus, Perisphinctes siemiradzkii, Perisphinctes siemirazkii

Synonymy list
YearName and author
1984Perisphinctes (Dichotomoceras) Atrops and Benest
1994Perisphinctes (Dichotomoceras) Schlegelmilch p. 61
2002Dichotomoceras Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitidaHaeckel 1866
suborderAmmonitinaHyatt 1889
superfamilyPerisphinctoidea(Steinman 1890)
familyPerisphinctidaeSteinmann 1890
subfamilyPerisphinctinaeSteinmann 1890
genusPerisphinctes()
subgenusDichotomoceras

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.

Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: aragoniteo
Environment: marinec
Locomotion: fast-movingo
Life habit: nektonico
Diet: carnivoreo
Vision: well-developedc
Created: 2005-01-28 02:27:03
Modified: 2009-10-08 14:14:55
Source: o = order, c = class
References: Kiessling 2003, Kiessling 2004

Age range: base of the Late/Upper Oxfordian to the top of the Early/Lower Kimmeridgian or 157.90000 to 152.21000 Ma

Collections (35 total)


Time interval Ma Country or state Original ID and collection number
Middle Oxfordian161.5 - 154.8Spain Dichotomoceras sp. (68308) Perisphinctes bifurcatoides (142584 142590) Perisphinctes bifurcatus (142589)
Middle Oxfordian161.5 - 154.8France Dichotomoceras sp. (62714) Dichotomoceras stenocycloides (62715) Perisphinctes bifurcatoides (12292) Perisphinctes bifurcatus, Perisphinctes bifurcatoides (12293) Perisphinctes bifurcatus, Perisphinctes crassus, Perisphinctes bifurcatoides (12294)
Middle Oxfordian161.5 - 154.8Germany Perisphinctes bifurcatus (62307) Perisphinctes sp., Perisphinctes bifurcatus (62308) Perisphinctes stenocycloides (62306)
Middle Oxfordian161.5 - 154.8Switzerland Dichotomoceras sp. (58565)
Oxfordian161.5 - 154.8Spain Perisphinctes bifurcatus, Perisphinctes grossouvrei (67866 67867)
Oxfordian161.5 - 154.8Algeria Dichotomoceras sp., Dichotomoceras bifurcatus (45048)
Oxfordian161.5 - 154.8Madagascar Dichotomoceras antecedens (98191) Dichotomoceras cliqueti, Dichotomoceras rabenjanaharyi, Dichotomoceras umbilicatum, Dichotomoceras quadratum, Dichotomoceras sparsicostatum, Dichotomoceras stenocycloides (98190) Prososphinctes virguloides, Lithacoceras mombassanum (98192)
Oxfordian - Kimmeridgian161.5 - 149.2Ethiopia Perisphinctes virguloides (94500)
Oxfordian - Kimmeridgian161.5 - 149.2Yemen Perisphinctes virguloides (94503)
Late/Upper Oxfordian157.9 - 154.8France Dichotomoceras bifurcatus, Dichotomoceras bifurcatoides, Dichotomoceras stenocycloides (62725) Dichotomoceras grossouvrei (62728) Dichotomoceras sp., Dichotomoceras dichotomoides (62727)
Late/Upper Oxfordian157.9 - 154.8Poland Dichotomoceras bifurcatoides (235873 235874)
Late/Upper Oxfordian157.9 - 154.8Madagascar (Atsimo-Andrefana) Dichotomoceras cliqueti, Dichotomoceras rabenjanaharyi, Dichotomoceras quadratum, Dichotomoceras umbilicatum, Dichotomoceras sparsicostatum, Dichotomosphinctes stenocycloides (234262) Prososphinctes virguloides, Divisosphinctes besairiei, Lithacoceras mombassanum (234266)
Late/Upper Oxfordian157.9 - 154.8Italy (Trapani) Perisphinctes bifurcatoides (36871)
Late/Upper Oxfordian - Early/Lower Kimmeridgian157.9 - 152.21Ethiopia Perisphinctes virguloides (93501)
Late/Upper Oxfordian - Early/Lower Kimmeridgian157.9 - 152.21India (Gujarat) Perisphinctes virguloides (234314 234316)
Late/Upper Oxfordian - Early/Lower Kimmeridgian157.9 - 152.21Spain Dichotomoceras sp. (68307)
Kimmeridgian154.8 - 149.2Madagascar Dichotomoceras predivisum (98167)
Kimmeridgian154.8 - 149.2Madagascar (Melaky) Dichotomoceras predivisum (234269)