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Aricoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Goniatitina
Superfamily:
Adrianitoidea
Family:
Adrianitidae
Subfamily:
Adrianitinae
Formal Genus Name and Reference:
Aricoceras RUZHENTSEV, 1950, p. 203
Type Species:
Adrianites ensifer GEMMELLARO, 1887, p. 46, OD
Images
(Click to enlarge in a new window)
Fig. 77, 1a-e. *A. ensifer (Gemmellaro), Sosio limestone, Wordian, Sicily, a-b, lectotype (herein), MGUP 82A of GemmelLARO (1887, pl. 6, 11-12), X 2 (new), c-d, paralectotype, MGUP 82B of gemmellaro (unfigured), ×2 (new); e, paralectotype, MGUP 82C of gemmellaro (1887, pl. 6,13), diameter ranging 10–19 mm (modified after Gemmellaro, 1887).
Synonyms
Metaricoceras
Geographic Distribution
Canada (British Columbia), Italy (Sicily), Iraq (Kurdistan), Oman, Indonesia (Timor), Australia (New South Wales, Queensland)
Age Range
Beginning Stage in Treatise Usage:
Cisuralian (Artinskian probably Baigendzhinian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Guadalupian (Wordian)
Ending International Stage:
Wordian
Fraction Up In Ending Stage:
100
Ending Date:
264.34
Description
Conch globular, with narrow umbilicus; sculpture evenly reticulate, outlining shallow sinus on flanks; mature peristome with long ventrolateral lappets. Sutural trace forming low arch, with four or five pairs of external lateral lobes to umbilical shoulders. Four named species. [This genus is similar to Neocrimites, but with evenly reticulate sculpture, lappets, and arched sutural trace.]
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Goniatitida
Suborder:
Goniatitina
Superfamily:
Adrianitoidea
Family:
Adrianitidae
Subfamily:
Adrianitinae
Formal Genus Name and Reference:
Aricoceras RUZHENTSEV, 1950, p. 203
Type Species:
Adrianites ensifer GEMMELLARO, 1887, p. 46, OD
Images
(Click to enlarge in a new window)
Fig. 77, 1a-e. *A. ensifer (Gemmellaro), Sosio limestone, Wordian, Sicily, a-b, lectotype (herein), MGUP 82A of GemmelLARO (1887, pl. 6, 11-12), X 2 (new), c-d, paralectotype, MGUP 82B of gemmellaro (unfigured), ×2 (new); e, paralectotype, MGUP 82C of gemmellaro (1887, pl. 6,13), diameter ranging 10–19 mm (modified after Gemmellaro, 1887).
Synonyms
Metaricoceras
Geographic Distribution
Canada (British Columbia), Italy (Sicily), Iraq (Kurdistan), Oman, Indonesia (Timor), Australia (New South Wales, Queensland)
Age Range
Beginning Stage in Treatise Usage:
Cisuralian (Artinskian probably Baigendzhinian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Guadalupian (Wordian)
Ending International Stage:
Wordian
Fraction Up In Ending Stage:
100
Ending Date:
264.34
Description
Conch globular, with narrow umbilicus; sculpture evenly reticulate, outlining shallow sinus on flanks; mature peristome with long ventrolateral lappets. Sutural trace forming low arch, with four or five pairs of external lateral lobes to umbilical shoulders. Four named species. [This genus is similar to Neocrimites, but with evenly reticulate sculpture, lappets, and arched sutural trace.]