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Barroisiceras

Cephalopoda - Ammonitida - Collignoniceratidae

Taxonomy
Barroisiceras was named by de Grossouvre (1894) [Sepkoski's age data: K Turo-u Sepkoski's age data: K Coni-l]. It is the type genus of Barroisiceratinae.

It was assigned to Ammonoidea by Reeside (1932); to Tissotiidae by Benavides-Caceres (1956); and to Barroisiceratinae by Parnes (1964), Futakami (1991) and Wright et al. (1996).

Species lacking formal opinion data

Synonyms
Synonymy list
YearName and author
1894Barroisia Grossouvre
1894Barroisiceras de Grossouvre
1932Barroisiceras Reeside
1956Barroisiceras Benavides-Caceres p. 476
1964Barroisiceras Parnes p. 16
1991Barroisiceras Futakami p. 263
1996Barroisiceras Wright et al. p. 187 fig. 144f,g,h,i
2002Subbarroisiceras Sepkoski

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classCephalopodaCuvier 1797
RankNameAuthor
subclassAmmonoidea()
orderAmmonitida
suborderAmmonitinaHyatt 1889
superfamilyAcanthoceratoidea(de Grossouvre 1894)
familyCollignoniceratidaeWright and Wright 1951
subfamilyBarroisiceratinaeBasse 1947
genusBarroisicerasde Grossouvre 1894

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. †Barroisiceras de Grossouvre 1894
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Invalid names: Harleites bentori Parnes 1964 [synonym]
Invalid names: Barroisia Grossouvre 1894 [replaced], Subbarroisiceras [synonym]
Diagnosis
ReferenceDiagnosis
C. W. Wright et al. 1996Rather involute to rather evolute; compressed to moderately inflated; high-whorled, with flat to slightly convex sides and fastigiate venter; dense to sparse, bullate to spinate umbilical tubercles giving rise to 2 or 3 straight to slightly sinuous, narrow to broad ribs; additional ribs may be intercalated; each rib bearing a distinct ventrolateral and siphonal clavus; ornament weakening on body chamber and may disappear except for fine striae and traces of siphonal tubercles. Primitive forms (e.g., B. minimus) differ from Subprionocyclus only in the absence of inner ventrolateral tubercles at any stage