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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) and Schlegelmilch (1994).

It was assigned to Perisphinctes by Atrops and Benest (1984) and 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()
orderAmmonitida
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 2004, Kiessling 2003

Age range: Late/Upper Oxfordian or 161.20000 to 155.70000 Ma

Collections (35 total)


Time interval Ma Country or state Original ID and collection number
Oxfordian163.5 - 157.3Algeria Dichotomoceras sp., Dichotomoceras bifurcatus (45048)
Oxfordian163.5 - 157.3Spain Perisphinctes bifurcatus, Perisphinctes grossouvrei (67866 67867)
Oxfordian163.5 - 157.3Madagascar Dichotomoceras antecedens (98191) Dichotomoceras cliqueti, Dichotomoceras rabenjanaharyi, Dichotomoceras umbilicatum, Dichotomoceras quadratum, Dichotomoceras sparsicostatum, Dichotomoceras stenocycloides (98190) Prososphinctes virguloides (98192)
Oxfordian - Kimmeridgian163.5 - 152.1Yemen Perisphinctes virguloides (94503)
Oxfordian - Kimmeridgian163.5 - 152.1Ethiopia Perisphinctes virguloides (94500)
Late/Upper Oxfordian161.2 - 155.7France Dichotomoceras bifurcatus, Dichotomoceras bifurcatoides, Dichotomoceras stenocycloides (62725) Dichotomoceras grossouvrei (62728) Dichotomoceras sp., Dichotomoceras dichotomoides (62727)
Late/Upper Oxfordian161.2 - 155.7Italy (Trapani) Perisphinctes bifurcatoides (36871)
Late/Upper Oxfordian161.2 - 155.7Madagascar (Atsimo-Andrefana) Dichotomoceras cliqueti, Dichotomoceras rabenjanaharyi, Dichotomoceras quadratum, Dichotomoceras umbilicatum, Dichotomoceras sparsicostatum, Dichotomosphinctes stenocycloides (234262) Prososphinctes virguloides, Divisosphinctes besairiei, Lithacoceras mombassanum (234266)
Late/Upper Oxfordian161.2 - 155.7Poland Dichotomoceras bifurcatoides (235873 235874)
Middle Oxfordian161.2 - 155.7Spain Dichotomoceras sp. (68308) Perisphinctes bifurcatoides (142584 142590) Perisphinctes bifurcatus (142589)
Middle Oxfordian161.2 - 155.7France Dichotomoceras sp. (62714) Dichotomoceras stenocycloides (62715) Perisphinctes bifurcatoides (12292) Perisphinctes bifurcatus, Perisphinctes bifurcatoides (12293) Perisphinctes bifurcatus, Perisphinctes crassus, Perisphinctes bifurcatoides (12294)
Middle Oxfordian161.2 - 155.7Germany Perisphinctes bifurcatus (62307) Perisphinctes sp., Perisphinctes bifurcatus (62308) Perisphinctes stenocycloides (62306)
Middle Oxfordian161.2 - 155.7Switzerland Dichotomoceras sp. (58565)
Late/Upper Oxfordian - Early/Lower Kimmeridgian161.2 - 150.8Ethiopia Perisphinctes virguloides (93501)
Late/Upper Oxfordian - Early/Lower Kimmeridgian161.2 - 150.8Spain Dichotomoceras sp. (68307)
Late/Upper Oxfordian - Early/Lower Kimmeridgian161.2 - 150.8India (Gujarat) Perisphinctes virguloides (234314 234316)
Kimmeridgian157.3 - 152.1Madagascar Dichotomoceras predivisum (98167)
Kimmeridgian157.3 - 152.1Madagascar (Melaky) Dichotomoceras predivisum (234269)