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Squalus crassispinus
Last, Edmunds & Yearsley, 2007
Fatspine spurdog
Classification: Elasmobranchii Squaliformes Squalidae
Reference of the original description
Part 2 - Squalus crassispinus sp nov., a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14, 11–22
Part 2 - Squalus crassispinus sp nov., a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14, 11–22
Image of the original description
Lateral view of Squalus crassispinus sp. nov. holotype (CSIRO H 2547–06, female 580 mm TL). In: Last, P.R. & EDMUNDS, M. & Yearsley, G.K. 2007 Part 2 - Squalus crassispinus sp nov, a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14: 11-22
Lateral view of Squalus crassispinus sp. nov. holotype (CSIRO H 2547–06, female 580 mm TL). In: Last, P.R. & EDMUNDS, M. & Yearsley, G.K. 2007 Part 2 - Squalus crassispinus sp nov, a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14: 11-22
Types
Squalus crassispinus
Holotype: CSIRO: H 2547-06; Paratype: CSIRO: H 4649-03; CSIRO: H 4031-87; CSIRO: H 4031-86; CSIRO: H 4649-04; CSIRO: H 1035-15; CSIRO: H 1035-14; CSIRO: H 1035-12; CSIRO: CA 4074; WAM: P 26223-001; WAM: P 26207-005;
Squalus crassispinus
Holotype: CSIRO: H 2547-06; Paratype: CSIRO: H 4649-03; CSIRO: H 4031-87; CSIRO: H 4031-86; CSIRO: H 4649-04; CSIRO: H 1035-15; CSIRO: H 1035-14; CSIRO: H 1035-12; CSIRO: CA 4074; WAM: P 26223-001; WAM: P 26207-005;
Description :
Citation: Squalus crassispinus Last, Edmunds & Yearsley, 2007: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Please send your images of "Squalus crassispinus" to info@shark-references.com
Ventral view of the head of Squalus crassispinus sp. nov. holotype (CSIRO H 2547–06, female 580 mm TL); Cusps of the flank denticles and lateral view of the dorsal fins (A. first dorsal fin, B. second dorsal fin) of Squalus crassispinus sp. nov. paratype (CSIRO H 1035–12, female 565 mm TL); In: Last, P.R. & EDMUNDS, M. & Yearsley, G.K. 2007 Part 2 - Squalus crassispinus sp nov, a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14: 11-22
Ventral view of the head of Squalus crassispinus sp. nov. holotype (CSIRO H 2547–06, female 580 mm TL); Cusps of the flank denticles and lateral view of the dorsal fins (A. first dorsal fin, B. second dorsal fin) of Squalus crassispinus sp. nov. paratype (CSIRO H 1035–12, female 565 mm TL); In: Last, P.R. & EDMUNDS, M. & Yearsley, G.K. 2007 Part 2 - Squalus crassispinus sp nov, a new spurdog of the megalops-cubensis group from the eastern Indian Ocean. CSIRO Marine and Atmospheric Research Paper, 14: 11-22
Common names
Fatspine spurdog
Fatspine spurdog
Short Description
This small species of the "quot;megalops-cubensis group"quot; is distinguished by the following characters: head width at mouth 9.9-11.3% TL; mouth width 2.1-2.4 times the horizontal prenarial length; direct pre-second dorsal length 3.7-4.2 times the pectoral-fin anterior margin, 2.6-2.8 times the dorsal caudal margin; preoral length 2.7-3.0 times the horizontal prenarial length, 8.3-9.2% TL; anterior nasal flap strongly bifurcate; first dorsal fin upright to raked; the exposed bases of dorsal-fin spines are very broad, 1.2-1.5% TL; both dorsal fins have short inner margins, first dorsal-fin height 1.3-1.7 times its inner margin length, second dorsal-fin height 1.1-1.3 times its inner margin length; pectoral-fin anterior margin 1.9-2.2 times its inner margin length; preventral caudal margin 2.4-4.6 times inner margin of pelvic fin; caudal fin pale with poorly demarcated, whitish posterior margin, caudal bar absent; flank denticles unicuspid; monospondylous centra 39-42 (mainly 40-41), precaudal centra 82-86, total centra 107-111 (mainly 109-110) [3327].
This small species of the "quot;megalops-cubensis group"quot; is distinguished by the following characters: head width at mouth 9.9-11.3% TL; mouth width 2.1-2.4 times the horizontal prenarial length; direct pre-second dorsal length 3.7-4.2 times the pectoral-fin anterior margin, 2.6-2.8 times the dorsal caudal margin; preoral length 2.7-3.0 times the horizontal prenarial length, 8.3-9.2% TL; anterior nasal flap strongly bifurcate; first dorsal fin upright to raked; the exposed bases of dorsal-fin spines are very broad, 1.2-1.5% TL; both dorsal fins have short inner margins, first dorsal-fin height 1.3-1.7 times its inner margin length, second dorsal-fin height 1.1-1.3 times its inner margin length; pectoral-fin anterior margin 1.9-2.2 times its inner margin length; preventral caudal margin 2.4-4.6 times inner margin of pelvic fin; caudal fin pale with poorly demarcated, whitish posterior margin, caudal bar absent; flank denticles unicuspid; monospondylous centra 39-42 (mainly 40-41), precaudal centra 82-86, total centra 107-111 (mainly 109-110) [3327].
Distribution
Eastern Indian Ocean: northwestern Australia; probably occurs more widely in the eastern Indian Ocean. Source: www.gbif.org
Eastern Indian Ocean: northwestern Australia; probably occurs more widely in the eastern Indian Ocean. Source: www.gbif.org
Remarks
shark-references Species-ID=6744;
shark-references Species-ID=6744;
