Table 2 in Evolutionary and biogeographic patterns in the deep-sea echinoid families Pourtalesiidae Agassiz 1881 and Ceratophysidae fam. nov. (Echinoidea)

Table 2. Morphological characteristics of Pourtalesiidae and Ceratophysidae related to the burrowing mode of life. n/d, absent or incomplete data.
SpeciesTW/TLSubanal rostrumSubanal fascioleSpatulate spinesData sourcerange (mid-range)Oral sideAboral sideCERATOPHYSIDAE(plastron plating type IV)Echinocrepis rostrata0.87–0.95 (0.91)inframarginal, small conicalabsentpresentabsentMironov 1973; Vardaro 2010; specimen examinationEchinocrepis cuneata0.71–0.72 (0.72)absentabsentn/dabsentAgassiz 1881; Mortensen 1950; David et al. 2005Ceratophysa ceratopyga0.62–0.67 (0.65)marginal, well-developed finger-likepresentpresentpresentAgassiz 1881; Mironov 1976; Mironov et al. 2015; specimen examinationHelgocystis carinata0.47–0.50 (0.49)marginal, well-developed finger-likepresentpresentpresentAgassiz 1881; Koehler 1909; Mortensen 1950; Mironov 1976; Mironov 1996; Mironov 2008; specimen examinationEchinogutta fabrefacta0.30–0.33 (0.32)marginal, well-developed finger-likepresentpresentn/dMironov 1974b; Mironov 1997; Mironov 2008Echinogutta amphora0.29–0.34 (0.32)marginal, well-developed finger-likepresentpresentpresentMironov 1974b; Mironov 1997; Mironov et al. 2015; specimen examinationEchinogutta antarctica0.29–0.31 (0.3)marginal, well-developed finger-likepresentpresentpresentMortensen 1909; Agassiz 1881; Mironov 1974b; Mironov 1997Echinogutta valvaedentata0.29 (0.29)marginal, well-developed finger-likepresentn/dn/dMironov 1974b; Mironov 1997Echinogutta sp.A0.25*marginal, well-developed finger-likepresentn/dpresentspecimen examinationEchinosigra mortenseni~0.25**n/dn/dn/dn/dMironov 1974a; Mironov 1997Echinosigra phiale0.20–0.29 (0.25)marginal, well-developed finger-likepresentpresentpresentAgassiz 1881; Mortensen 1907; Mortensen 1950; Gage 1984; Mironov 1978; Mironov 1997; Mironov 2008Echinosigra porrecta<0.2**n/dn/dn/dn/dMironov 1974a; Mironov 1997Echinosigra vitjazi~0.11**marginal, well-developed finger-likepresentn/dn/dMironov 1997(plastron plating type V)Spatagocystis challengeri0.71–0.74 (0.73)inframarginal, small conicalpresentabsentabsentAgassiz 1881; Agassiz 1904; Clark 1925; Mortensen 1950Solenocystis imitans0.36marginal, well-developed finger-likepresentn/dn/dMironov 2008Rictocystis jensenae~0.24**marginal, well-developed finger-likepresentn/dn/dMironov 1996POURTALESIIDAE(plastron plating type VI)Pourtalesia (?) sp. A0.65inframarginal, small conicalpresentabsentabsentspecimen examinationrange (mid-range)Oral sideAboral sidePourtalesia aurorae0.55–0.63 (0.59)marginal,conicalpresentabsentabsentKoehler 1926; David et al. 2005Cystocrepis setigera0.52–0.64 (0.58)absentabsentabsentabsentAgassiz 1904; Mironov 1976; specimen examinationPourtalesia aff. hispida0.51–0.65 (0.58)marginal,conicalpresentn/dn/dDe Ridder et al., 1992; David et al. 2005 (as P.hispida); Linse et al. 2008 (as P.aurorae); Schultz, 2006 (as P.hispida)Pourtalesia sp. C0.51–0.59 (0.55)marginal,conicalpresentabsentabsentspecimen examinationPourtalesia jeffreysi lata0.49–0.60 (0.55)marginal,conical; marginal, well-developed finger-likepresentpresentabsentDavid 1983; Mironov 1995a; Rogacheva et al. 2013Pourtalesia beringiana0.49–0.58 (0.54)marginal, well-developed finger-likepresentpresentpresentBaranova 1955; Mironov 1976; Mironov 1995b; specimen examinationPourtalesia hispida0.50–0.53 (0.52)marginal,conicalpresentabsentabsentAgassiz 1881; Koehler 1926; Mironov 1995, specimen examinationPourtalesia heptneri0.45–0.56 (0.51)marginal, well-developed finger-likepresentpresentpresentMironov 1978; Mironov 1995b; Mironov et al. 2015; specimen examinationPourtalesia laguncula0.49–0.52 (0.51)marginal, well-developed finger-likepresentn/dn/dAgassiz 1881; Lovén 1883; Mortensen 1950Pourtalesia jeffreysi gibbosa0.47–0.54 (0.51)marginal, well-developed finger-likepresentpresentabsentLovén 1883; Mortensen 1907; Mironov 1995a; Rogacheva et al. 2013; specimen examinationPourtalesia vinogradovae0.49*marginal,conical; marginal, well-developed finger-likepresentn/dn/dMironov 1974 (as P.debilis); Mironov 1978 (as P. aff. debilis); Mironov 1995bPourtalesia sp. E0.42–0.56 (0.49)marginal, well-developed finger-likepresentpresentpresentMironov 1995b (as P. aff. alcocki); Mortensen 1907 (as P. wandeli, partim); specimen examinationPourtalesia alcocki0.43–0.51 (0.47)marginal, well-developed finger-likepresentn/dn/dKoehler 1914; Clark 1923; Clark 1925; Mironov 1995b; specimen examinationPourtalesia debilis0.46* (0.46)marginal, well-developed finger-likepresentn/dpresentKoehler 1926; David et al. 2005Pourtalesia sp. B0.46*marginal, well-developed finger-likepresentn/dpresentspecimen examinationPourtalesia tanneri0.40–0.44 (0.43)marginal, well-developed finger-likepresentabsentabsentAgassiz 1898; Agassiz 1904; Mironov 1976; Mironov 1995brange (mid-range)Oral sideAboral sidePourtalesia jeffreysi jeffreysi0.4marginal, well-developed finger-likepresentn / dn / dThomson 1874; Mironov 1995aPourtalesia miranda0.36 –0.42 (0.39)marginal, well-developed finger-likepresentpresentpresentAgassiz 1872; Mironov 1995 bPourtalesia sp. D0.39 (0.39)marginal, well-developed finger-likepresentn / dn / dMironov 1995 b (as P. aff. miranda)Pourtalesia thomsoni0.36 –0.42 (0.39)marginal, well-developed finger-likepresentpresentpresentMironov 1976; Mironov 1995 b; Mironov et al. 2018; specimen examination