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Table 1 Morphometric and meristic data for the specimens of Zameus squamulosus deposited at the Colección Nacional de Peces of the Instituto de Biología, Universidad Nacional Autónoma de México (CNPE-IBUNAM). Measurements are expressed as a percentage of total length (% TL)

From: New record of Zameus squamulosus (Chondrichthyes: Squaliformes: Somniosidae) in the Southern Gulf of Mexico

Measurements CNPE-IBUNAM 14608 CNPE-IBUNAM 14608 CNPE-IBUNAM 16547 CNPE-IBUNAM 16547
Total length 330 290 270 250
Precaudal fin length 80.3 73 76 80
Prenarial length 1.5 1.3 2.1 2.8
Preoral length 8.4 8.2 8.8 9.6
Preorbital length 5.4 6.2 6.2 6.8
Head length 22.7 24 22.2 24
Prepectoral fin length 23 24.4 24 26
Prepelvic fin length 60.6 60.3 59.2 60.6
Prefirst dorsal fin length 43.7 49.3 38.8 40
Presecond dorsal fin length 65.6 65.5 61.1 66
Interdorsal width 19 16 17.4 18.4
Pectoral fin–pelvic fin space 26 26.5 25.18 32
Eye length 4 3.4 3.7 3.2
Eye height 2.4 2.7 2.9 2.8
Mouth length   3.7 4.2 4
Mouth width 7.2 6.8 7.4 7.7
Upper labial furrow length 3.6 3.4 3 3.6
Lower labial furrow length 2.1 2 2 2.4
First gill slit length 2.1 1.9 2 2
Fifth gill slit length 2.1 2.2 2.3 2.1
Head height 5.4 7.5 5.1 7.6
Head width 12.1 11.3 11.1 12.8
Trunk height 11.4 12 8.8 10.8
Trunk width 10.6 10.3 9.6 10.4
Girth 36.3 32.7 22 32
Pectoral fin length 11.5 12.7 10 11.2
Pectoral fin base length 5.1 5.1 4.8 4.8
Pectoral fin height 5.7 5.5 5 4
Pelvic fin length 11 10 13.3 8
Pelvic fin base length 3 2.7 2.5 2.6
Pelvic fin height 5.4 4.8 4.4 2.4
First dorsal fin length 9 9.3 9.2 7.6
First dorsal fin base length 4.8 5.5 5.1 4.4
First dorsal fin height 3 3 3.7 3.6
Second dorsal fin length 7.6 9.1 8.1 8
Second dorsal fin base length 7.2 6.8 7.7 6.8
Second dorsal fin height 5.1 5.1 4.8 3.6
Dorsal caudal fin margin 21.8 22.7 20 18.8
Upper tooth counts 44 47 46 46
Lower tooth counts 37 40 40 40