Meridolum middenense

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Meridolum middenense
Snail shell Resolute Track Casuarina forest, around 25 mm long2.JPG
An empty shell at Ku-ring-gai Chase National Park, Australia
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily:
Helicoidea
Family:
Camaenidae
Genus:
Meridolum
Species:
M. middenense
Binomial name
Meridolum middenense
McLauchlan, 1954 [1]

Meridolum middenense is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Camaenidae. This species is endemic to Australia. [2]

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Land snail

A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. Land snail is the common name for terrestrial gastropod mollusks that have shells. However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water.

Terrestrial animal animals living on land

Terrestrial animals are animals that live predominantly or entirely on land, as compared with aquatic animals, which live predominantly or entirely in the water, or amphibians, which rely on a combination of aquatic and terrestrial habitats. Terrestrial invertebrates include ants, flies, crickets, grasshoppers and spiders.

Contents

Distribution of Meridolum middenense Meridolum middenense map.png
Distribution of Meridolum middenense
An empty shell of Meridolum middenense, in a She-oak forest above Resolute Beach, Ku-ring-gai Chase National Park, Australia Snail shell Resolute Track Casuarina forest, around 25 mm long1.JPG
An empty shell of Meridolum middenense, in a She-oak forest above Resolute Beach, Ku-ring-gai Chase National Park, Australia

Ecology

This species lives in open forests in the leaf litter. [3]

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References

  1. ↑ McLauchlan C. F. (1954). "Three new land shells from New South Wales". Australian Zoologist 12: 39.
  2. ↑ "Meridolum middenense". Discoverlife.org.
  3. ↑ "Species Meridolum middenense McLauchlan, 1954" Archived 2012-10-15 at the Wayback Machine . Australian Faunal Directory, accessed 24 March 2011.


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