- Elongate shell, oval to subrectangular
- Weakly biconvex and poorly mineralized
- Ventral valve has a weakly developed pedicle groove
The shell of Lingula anatina can grow up to 5-6cm in length, whilst the pedicle is much longer and can attain lengths of 10-15cm.
The organophosphatic shell of Lingula is the primitive condition for the Brachiopoda and as such represents one of the first innovations in biomineralization by any animal. The shell itself has a high organic component along with the inorganic phosphatic component.
The potential lifespan of Lingula is not well known, however it could be surprisingly long; captive brachiopods are known to live to be up to 20 years old.
Lingula anatina reproduces by dispersal spawning. Gametes are released into the water column by the different sexes. It is unknown what, if any, factors regulate this. However it is thought that it might be tidally or seasonally regulated.The larvae have a long pelagic phase; up to and over 6 weeks. Though this phase may not last this long, settlement and pseudometamorphosis takes place and the larvae matures into the full adult form. Not much is known about the factors influencing this phase of the Lingula lifecycle.
Lingula anatina tends to be restricted to littoral and sub-littoral environments.The substrate can vary widely from estuarine mudflats to fine sands to environments rich in coral reef debris.In all cases, Lingula anatina has an infaunal lifestyle.
The geographic distribution of modern Lingula is restricted to:
- Indian Ocean rim
- North-west Africa
Life History and Behavior
Evolution and Systematics
Molecular Biology and Genetics
Barcode data: Lingula anatina
There are 7 barcode sequences available from BOLD and GenBank. Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species. See the BOLD taxonomy browser for more complete information about this specimen and other sequences.
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Statistics of barcoding coverage: Lingula anatina
Public Records: 7
Specimens with Barcodes: 7
Species With Barcodes: 1