";} } ?> Morphology Summary - Lampetra lanceolata
Morphology Data of Lampetra lanceolata
Identification keys
Main Ref. Renaud, C.B., 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral eel-like
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Description: Adults: 11.5-14.05 cm TL. Body proportions, as percentage of TL (based on the holotype and two paratypes measuring 11.5-13.7 cm TL or on a single paratype 12.4 cm TL; if the latter case then a single value is given): prebranchial length, 11.1-11.7; branchial length, 10.2-10.9; trunk length, 46.7-51.6; tail length, 29.0; eye length, 2.0-2.3; disc length, 5.2. Urogenital papilla length, as a percentage of branchial length, in spawning males, undetermined. Trunk myomeres, 58-64. Dentition: supraoral lamina, 2 unicuspid teeth; infraoral lamina, 5-6 unicuspid teeth; 3 endolaterals on each side; endolateral formula, typically 2-2-2; 1-2 rows of anterials; first row of anterials, 9 unicuspid teeth; exolaterals absent; posterials absent except for one very small cusp on the right side; transverse lingual lamina, one low but wide-based median cusp with no flanking lateral teeth; longitudinal lingual laminae condition undetermined. Velar tentacles, 5 with tubercles. The median tentacle is shorter than the lateral ones immediately next to it. Body coloration in mature individuals (preserved), dorsal and upper lateral aspects grayish brown, lower lateral and ventral aspects yellowish. Lateral line neuromasts unpigmented. Caudal fin pigmentation, absent or trace. Caudal fin shape, spade-like. Oral fimbriae, 124 (estimate based on number counted on right side times two because left side damaged). Oral papillae, about 23 (estimate based on number counted on right side times two because left side damaged).

Ease of Identification

Meristic characteristics of Lampetra lanceolata

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 2
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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