Overview

Brief Summary

Biology

Type of larval development: planktotrophic, inferred from multispiral protoconch.
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Source: World Register of Marine Species

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Distribution

Eastern Atlantic, from Bay of Biscay to Morocco, Canary Islands, Madeira and the Azores; Western Atlantic from New Jersey to Virgin Islands; from outer shelf to bathyal, 50-1250 m. Gorringe and Josephine seamounts, rare in 205-485 m; Mediterranean.
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Source: World Register of Marine Species

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Range: 40.05°N to 13.2°N; 86.5°W to 59.6°W. Distribution: USA: New Jersey, North Carolina, Florida; Florida: East Florida, West Florida, Florida Keys; Bermuda, Bahamas; Bahamas: Abaco (Great & Little), Bimini; Yucatan Strait, Cuba; Cuba: Villa Clara, Holguin; Virgin Islands: St. Thomas; Barbados
  • North-West Atlantic Ocean species (NWARMS)
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Source: World Register of Marine Species

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Physical Description

Diagnostic Description

Diagnosis

Shell up to 25 mm high, rather broad compared to others in the genus. Protoconch large (620-660 ¼m), with 4-5 whorls and a microsculpture of tenuous, even spiral striae. Teleoconch with 8-9 very convex whorls, nearly disjunct as if they were holding together by the axial ribs, and a very deep suture; with about 11-14 slightly prosocline lamellar axial ribs per whorl on which there a angulose projection next to the suture and projecting above it; interspace with a very delicate spiral microsculpture, best visible on juveniles. Colour of protoconch brown, of teleoconch white. The West African Epitonium trochiforme von Maltzan, 1885 is similar in size and shape but lacks a spiral sculpture between ribs.
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Source: World Register of Marine Species

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Type Information

Holotype for Scalaria pourtalesii Verrill & Smith, 1880
Catalog Number: USNM 44801
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: Female;
Preparation: Dry; Alcohol (Ethanol)
Collector(s): United States Fish Commission
Locality: off Martha's Vineyard, Massachusetts, United States, North Atlantic Ocean
Depth (m): 155 to 155
Vessel: Fish Hawk R/V
  • Holotype: Conn. Acad. Sci. vol. 5, pl. 57, fig. 32.
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Ecology

Habitat

Depth range based on 19 specimens in 1 taxon.
Water temperature and chemistry ranges based on 17 samples.

Environmental ranges
  Depth range (m): 14 - 544
  Temperature range (°C): 8.241 - 25.874
  Nitrate (umol/L): 0.468 - 14.643
  Salinity (PPS): 34.349 - 36.313
  Oxygen (ml/l): 4.343 - 5.009
  Phosphate (umol/l): 0.130 - 1.048
  Silicate (umol/l): 1.653 - 8.273

Graphical representation

Depth range (m): 14 - 544

Temperature range (°C): 8.241 - 25.874

Nitrate (umol/L): 0.468 - 14.643

Salinity (PPS): 34.349 - 36.313

Oxygen (ml/l): 4.343 - 5.009

Phosphate (umol/l): 0.130 - 1.048

Silicate (umol/l): 1.653 - 8.273
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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