Protatlanta souleyeti | |
---|---|
apical view of the shell of Protatlanta souleyeti from the Pliocene of Philippines | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Littorinimorpha |
Family: | Atlantidae |
Genus: | Protatlanta |
Species: | P. souleyeti
|
Binomial name | |
Protatlanta souleyeti (
E. A. Smith, 1888)
[2]
| |
Synonyms | |
Atlanta souleyeti Smith, 1888 |
Protatlanta souleyeti is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae. [3]
Protatlanta souleyeti is the type species on the genus Protatlanta. [1] It is considered to be the only Recent species on the genus. [1]
The specific name souleyeti is in honor of French malacologist Louis François Auguste Souleyet.
The maximum recorded shell length is 2 mm. [4]
Some of the fossil specimens preserve a pinkish colour of the larval shells. [1] The protoconch is naticoid in shape and has approximately 3¼ whorls. [1] Most specimens have two thin spirals above the periphery, visible in apical view, and a third such spiral below the periphery, which separates the base of the protoconch and becomes covered by subsequent whorls. [1] The described ornament can be fairly constant, but some specimens were found in which these three spirals are lacking. [1] Richter (1968, p. 17, fig. 6c) described Recent larval shells from the Gulf of Naples as smooth. [1] For Recent material from near Hawaii, Seapy (1990, p. 114, fig. 4A-D) also stated that the first whorls are smooth. [1] But Batten & Dumont (1976, figs. 39–41) and Richter & Seapy (1999, p. 633, fig. 5A) and Janssen (2007) [1] have described two protoconch morphologies. [1] On the teleoconch whorls, the peripheral belt on which the conchiolin keel was attached is very clear. [1] Growth lines are strongly bent backward on this belt, indicating the presence of a deep sinus on the apertural margin. [1] A very faint spiral striation is visible all over the adult shell surface. [1]
The first fossil specimens of Protatlanta souleyeti from Cainozoic has been found from Pliocene in Anda, Pangasinan, Luzon, Philippines in 2001 (published in 2007). [1]
Minimum recorded depth is 0 m. [4] Maximum recorded depth is 0 m. [4]
This article incorporates CC-BY-3.0 text from the reference [1]
Protatlanta souleyeti | |
---|---|
apical view of the shell of Protatlanta souleyeti from the Pliocene of Philippines | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Caenogastropoda |
Order: | Littorinimorpha |
Family: | Atlantidae |
Genus: | Protatlanta |
Species: | P. souleyeti
|
Binomial name | |
Protatlanta souleyeti (
E. A. Smith, 1888)
[2]
| |
Synonyms | |
Atlanta souleyeti Smith, 1888 |
Protatlanta souleyeti is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae. [3]
Protatlanta souleyeti is the type species on the genus Protatlanta. [1] It is considered to be the only Recent species on the genus. [1]
The specific name souleyeti is in honor of French malacologist Louis François Auguste Souleyet.
The maximum recorded shell length is 2 mm. [4]
Some of the fossil specimens preserve a pinkish colour of the larval shells. [1] The protoconch is naticoid in shape and has approximately 3¼ whorls. [1] Most specimens have two thin spirals above the periphery, visible in apical view, and a third such spiral below the periphery, which separates the base of the protoconch and becomes covered by subsequent whorls. [1] The described ornament can be fairly constant, but some specimens were found in which these three spirals are lacking. [1] Richter (1968, p. 17, fig. 6c) described Recent larval shells from the Gulf of Naples as smooth. [1] For Recent material from near Hawaii, Seapy (1990, p. 114, fig. 4A-D) also stated that the first whorls are smooth. [1] But Batten & Dumont (1976, figs. 39–41) and Richter & Seapy (1999, p. 633, fig. 5A) and Janssen (2007) [1] have described two protoconch morphologies. [1] On the teleoconch whorls, the peripheral belt on which the conchiolin keel was attached is very clear. [1] Growth lines are strongly bent backward on this belt, indicating the presence of a deep sinus on the apertural margin. [1] A very faint spiral striation is visible all over the adult shell surface. [1]
The first fossil specimens of Protatlanta souleyeti from Cainozoic has been found from Pliocene in Anda, Pangasinan, Luzon, Philippines in 2001 (published in 2007). [1]
Minimum recorded depth is 0 m. [4] Maximum recorded depth is 0 m. [4]
This article incorporates CC-BY-3.0 text from the reference [1]