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Information about Allonautilus Perforatus

Allonautilus perforatus
Conservation status
Data deficient
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Cephalopoda
Order:Nautilida
Family:Nautilidae
Genus:Allonautilus
Species:A. perforatus
Binomial name
Allonautilus perforatus
(Conrad, 1849)
Synonyms
  • Nautilus perforatus
    Conrad, 1849
Allonautilus perforatus is a species of nautilus native to the waters around Bali, Indonesia. It is known only from drifted shells and, as such, is the least studied of the six recognised nautilus species. A. perforatus shows a shell shape and coloration very similar to that of A. scrobiculatus and shares with this species the characteristic open umbilicus. However, it bears highly distinctive shell-ribbing, which is unique among extant ectocochliate cephalopods, and lacks scrobiculate shell sculpture. It is not known whether A. perforatus possesses the thick encrusting layer (periostracum) characteristic of A. scrobiculatus. Maximum known shell diameter is around 180 mm.[1]

References

1. ^ Jereb, P. 2005. Family Nautilidae. In: P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and Illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 51–55.

External links

conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. Many factors are taken into account when assessing the conservation status of a species: not simply the number remaining, but the
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Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Mollusca
Linnaeus, 1758

Classes

Caudofoveata
Aplacophora
Polyplacophora
Monoplacophora
Bivalvia
Scaphopoda
Gastropoda
Cephalopoda
† Rostroconchia
† Helcionelloida
† ?Bellerophontida
The molluscs
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Cephalopoda
Cuvier, 1797

Orders

Subclass Nautiloidea
  • †Plectronocerida
  • †Ellesmerocerida
  • †Actinocerida
  • †Pseudorthocerida
  • †Endocerida
  • †Tarphycerida
  • †Oncocerida

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Nautilina
Agassiz, 1847

Family: Nautilidae
Blainville, 1825

Genera

Allonautilus
Nautilus

Nautilus (from Greek ναυτίλος
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Nautilina
Agassiz, 1847

Family: Nautilidae
Blainville, 1825

Genera

Allonautilus
Nautilus

Nautilus (from Greek ναυτίλος
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Allonautilus
Ward & Saunders, 1997

Species

Allonautilus perforatus Allonautilus scrobiculatus (type)

The genus Allonautilus
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binomial nomenclature is the formal system of naming species. The system is also called binominal nomenclature (particularly in zoological circles), binary nomenclature (particularly in botanical circles), or the binomial classification system.
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Timothy Abbott Conrad (1803 – 1877) was an American geologist, malacologist and carcinologist.
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In scientific nomenclature, synonyms are different scientific names used for a single taxon. Usage and terminology are different for zoology and botany.

Zoology

In zoological nomenclature, synonyms are different scientific names that pertain to the same taxon, for example
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species is one of the basic units of biological classification. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring.
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Nautilina
Agassiz, 1847

Family: Nautilidae
Blainville, 1825

Genera

Allonautilus
Nautilus

Nautilus (from Greek ναυτίλος
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Bali is an Indonesian island located at Coordinates: , the westernmost of the Lesser Sunda Islands, lying between Java to the west and Lombok to the east.
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Motto
"Bhinneka Tunggal Ika"   (Old Javanese)
"Unity in Diversity"
National ideology: Pancasila[1]
Anthem
Indonesia Raya
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Umbilicus may refer to:
  • Umbilicus (mollusk), a feature of gastropod shell anatomy
  • Umbilicus (genus), a genus of 15-20 species of flowering plants
  • Umbilicus urbis Romae, the designated centre of the city of Rome from which and to which all distances in Rome

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The periostracum is a thin organic coating forming the outer-most layer of the shell of many mollusks, for example shell of bivalves or gastropod shell. The periostracum "is composed of a type of conchin [or conchiolin] (largely quinone-tanned proteins) similar to that found in the
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