Foordiceras Hyatt, 1893

Korn, Dieter & Hairapetian, Vachik, 2025, Late Permian nautiloids from Baghuk Mountain (Central Iran), European Journal of Taxonomy 1019, pp. 1-76 : 31

publication ID

https://doi.org/10.5852/ejt.2025.1019.3071

publication LSID

lsid:zoobank.org:pub:E24EBF4A-9FE2-47E4-A656-E1698F88BB41

DOI

https://doi.org/10.5281/zenodo.17227712

persistent identifier

https://treatment.plazi.org/id/03E487D4-FFC5-491E-FD98-587087B3FB67

treatment provided by

Plazi

scientific name

Foordiceras Hyatt, 1893
status

 

Genus Foordiceras Hyatt, 1893

Type species

Nautilus goliathus Waagen, 1879 ; original designation.

Diagnosis

Genus of the family Foordiceratidae with a subevolute conch with equidimensional or depressed trigonal or trapezoidal whorl profile. Umbilical margin in the intermediate stage pronounced and subangular, in the adult stage missing. Sculpture with coarse nodes on the ventral shoulder. Suture line with shallow external lobe or low external saddle and broadly rounded lateral lobe; without annular process. Siphuncle with subcentral position ventrad of septum centre.

Included Permian species

Pakistan ( de Koninck 1863; Waagen 1879; Reed 1931): Nautilus Flemingianus de Koninck, 1863 , Wuchiapingian, Salt Range; Nautilus goliathus Waagen, 1879 , Wuchiapingian, Salt Range; Foordiceras grypoceroides Reed, 1931 , Wuchiapingian, Salt Range.

Central Europe ( Prinoth & Posenato 2007): Foordiceras dolomiticum Prinoth & Posenato, 2007 , Changhsingian, Dolomites.

Central Iran (this paper): Foordiceras eicosacanthum sp. nov., Wuchiapingian; Foordiceras decacanthum sp. nov., Wuchiapingian; Foordiceras ascetum sp. nov., Wuchiapingian.

Remarks

Foordiceras is a genus that has been interpreted in very different ways. Miller & Youngquist (1949) defined it very broadly and included a number of species that are now placed in other genera such as Pseudofoordiceras ( Ruzhencev & Shimansky 1954) . Here, Foordiceras is reduced to a narrow morphological circle, which is mainly defined by the rounded triangular or trapezoidal whorl profile and a sculpture with coarse ventrolateral nodes.

Kingdom

Animalia

Phylum

Mollusca

Class

Cephalopoda

SubClass

Nautiloidea

Order

Nautilida

SubOrder

Tainoceratina

SuperFamily

Pleuronautiloidea

Family

Koninckioceratidae

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