Akanthophoreidae Sieg 1986
- Dataset
- Tanaidacea (Crustacea: Peracarida) of the northeast Atlantic: Chauliopleona Dojiri and Sieg, 1997 and Saurotipleona n. gen. from the ‘ Atlantic Margin’
- Rank
- FAMILY
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Malacostraca
- order
- Tanaidacea
- family
- Akanthophoreidae
discussion
Remarks Although the continuous discovery of tanaidacean species worldwide during the last 30 years (Błażewicz-Paszkowycz, Bamber, Anderson 2012) showed that the ‘ Akanthophoreus ’ habitus was a particular bauplan consistent with a family-level BIOICE 3219 RP 11 July 2001 Norwegian Basin 1639 67.15 8.28 1 − 0.8 4 BIOICE 3222 RP 11 July 2001 Jan Mayen Ridge 1529 67.54 8.06 1 − 0.8 4 BIOICE 3225 RP 12 July 2001 Norwegian Basin 1994 68.35 8.15 0 − 0.9 4 DTI 2000 55278 # 1 MC 4 August 2000 Faroe-Shetland 1277 61.56 2.08 4 Channel DTI 2000 55296 # 1 MC 8 August 2000 Faroe-Shetland 1265 61.57 1.01 4 Channel DTI 2000 55316 # 1 - 3 MC 12 August 2000 Faroe-Shetland 1530 61.70 3.07 4 Channel DTI 2000 55317 # 1,2 MC 13 August 2000 Faroe-Shetland 1652 61.91 2.81 4 Channel DTI 2000 55445 # 1,2 MC 1 September 2000 Faroe-Shetland 1058 61.19 2.78 4 Channel DTI 2000 55447 # 10 MC 2 September 2000 Faroe-Shetland 1656 61.92 2.80 4 Channel DTI 2000 55447 # 13 MC 2 September 2000 Faroe-Shetland 1656 61.92 2.80 4 Channel INCAL CP 01 CP 16 July 1976 North Rockall 2040 57.93 10.92 2 Trough SEA 4 57018 # 2 DG 1 July 2002 West Shetland 198 61.58 0.08 ° E 193 μm [mean 3 Shelf grain size] SEA 4 57020 # 1 DG 1 July 2002 North Shetland 193 61.57 0.53 189 μm 3 Shelf SEA 4 57023 # 1 DG 1 July 2002 West Shetland 243 61.87 0.03 ° E 169 μm 3 Slope SEA 4 57030 # 1 BC 1 July 2002 Faroe-Shetland 1588 62.73 1.12 16 μm 4 Channel SEA 4 57031 # 1,2 BC 1 July 2002 Faroe-Shetland 1593 62.76 1.07 12 μm 4 Channel SEA 4 57032 # 1 BC 1 July 2002 Faroe-Shetland 1598 62.85 1.00 11 μm 4 Channel SEA 4 57036 # 1 BC 1 July 2002 Norwegian Basin 2064 63.44 0.42 14 μm 4 (Continued) status, Sieg’ s subfamily Akanthophoreinae was elevated to the Akanthophoreidae only recently (Błażewicz-Paszkowycz and Bamber 2011). A phylogenetic analysis confirming the monophyly of most of the previously assigned genera and new family members has been carried out recently (Larsen and Araújo-Silva 2014). Within a fairly conservative overall morphology, specialised characters such as high pleonal spurs, lateral pleotelson spurs, crenation or nodules on various regions of the cheliped, extension of a cheliped carpal shield, slender uropods with one or two-segmented exopods, and grooved and serrate dactylus of pereopods 4 – 6 are part of the morphological expression within this taxon. The following two genera are typical akanthophoreids, from their overall habitus to the narrow mandibular molars that carry a palmate array of distal spines. The latter character is quite different from that expressed in akanthophoreid-like taxa such as Portaratrum and Leptognathioides where the molar is broader and has a coronal spine array (Bird 2014).