Corrigendum: The Collins’ monster, a spinous suspension-feeding lobopodian from the Cambrian Burgess Shale of British Columbia (Palaeontology, (2020), 10.1111/pala.12499)

Abstract

In the recent publication by Caron & Aria (2020), the proposed new family-group name ‘Teratopodidae’ is not available because it is not formed from the stem of an available generic name (ICZN 1999; Art. 11.7.1.1). A replacement name is proposed here, along with corrected Remarks. Systematic palaeontology Family COLLINSOVERMIDAE nov. LSID urn:lsid:zoobank.org:act:41E7E111-B628-42DC-AE3A-0290D5F25DB3 Derivation of name After the type genus Collinsovermis. Included genera Acinocricus Conway Morris & Robison, 1988, unnamed form from Emu Bay Shale (García-Bellido et al. 2013), Collinsium Yang et al., 2015, Collinsovermis Caron & Aria, 2020. Diagnosis Luolishaniid lobopodians with stout bodies and paired spinules on anterior lobopods up to c. 2.5 times as long as lobopod diameter, and spaced apart c. 1/3 of lobopod diameter. Remarks Collinsovermidae differ from other luolishaniid lobopodians by the length and spacing of their appendicular spinules, as diagnosed above. The need to create a familial-level rank arises with the demonstrated cladistic grouping of Collinsovermis,Acinocricus and Collinsium, which is helpful in discussing diversity across an ever larger luolishaniid clade. The extent of the presence of long and elongate dorsal spines is another potential character that could inform the monophyly of this group or a sub-group within Collinsovermidae, since spines at least twice as long as body diameter in Luolishania are present only on a few post-frontal somites, possibly from somite 2 to somite 4, whereas they cover most of the body in Acinocricus,Collinsium and Collinsovermis. The seemingly shorter spine length in the EBS taxon and its incompleteness cast doubt on the validity of this character, although it may mean that the EBS form occupies a basal position within Collinsovermidae. Likewise, we identified that an antero-lateral change in spine number per set characterised Acinocricus,Collinsovermis and, less markedly, Collinsium, but we cannot be sure at present whether this trait is diagnostic of Collinsovermidae as a whole. Family COLLINSOVERMIDAE nov. LSID urn:lsid:zoobank.org:act:41E7E111-B628-42DC-AE3A-0290D5F25DB3 Derivation of name After the type genus Collinsovermis. Included genera Acinocricus Conway Morris & Robison, 1988, unnamed form from Emu Bay Shale (García-Bellido et al. 2013), Collinsium Yang et al., 2015, Collinsovermis Caron & Aria, 2020. Diagnosis Luolishaniid lobopodians with stout bodies and paired spinules on anterior lobopods up to c. 2.5 times as long as lobopod diameter, and spaced apart c. 1/3 of lobopod diameter. Remarks Collinsovermidae differ from other luolishaniid lobopodians by the length and spacing of their appendicular spinules, as diagnosed above. The need to create a familial-level rank arises with the demonstrated cladistic grouping of Collinsovermis,Acinocricus and Collinsium, which is helpful in discussing diversity across an ever larger luolishaniid clade. The extent of the presence of long and elongate dorsal spines is another potential character that could inform the monophyly of this group or a sub-group within Collinsovermidae, since spines at least twice as long as body diameter in Luolishania are present only on a few post-frontal somites, possibly from somite 2 to somite 4, whereas they cover most of the body in Acinocricus,Collinsium and Collinsovermis. The seemingly shorter spine length in the EBS taxon and its incompleteness cast doubt on the validity of this character, although it may mean that the EBS form occupies a basal position within Collinsovermidae. Likewise, we identified that an antero-lateral change in spine number per set characterised Acinocricus,Collinsovermis and, less markedly, Collinsium, but we cannot be sure at present whether this trait is diagnostic of Collinsovermidae as a whole. Family COLLINSOVERMIDAE nov. LSID urn:lsid:zoobank.org:act:41E7E111-B628-42DC-AE3A-0290D5F25DB3 Derivation of name After the type genus Collinsovermis. Included genera Acinocricus Conway Morris & Robison, 1988, unnamed form from Emu Bay Shale (García-Bellido et al. 2013), Collinsium Yang et al., 2015, Collinsovermis Caron & Aria, 2020. Diagnosis Luolishaniid lobopodians with stout bodies and paired spinules on anterior lobopods up to c. 2.5 times as long as lobopod diameter, and spaced apart c. 1/3 of lobopod diameter. Remarks Collinsovermidae differ from other luolishaniid lobopodians by the length and spacing of their appendicular spinules, as diagnosed above. The need to create a familial-level rank arises with the demonstrated cladistic grouping of Collinsovermis,Acinocricus and Collinsium, which is helpful in discussing diversity across an ever larger luolishaniid clade. The extent of the presence of long and elongate dorsal spines is another potential character that could inform the monophyly of this group or a sub-group within Collinsovermidae, since spines at least twice as long as body diameter in Luolishania are present only on a few post-frontal somites, possibly from somite 2 to somite 4, whereas they cover most of the body in Acinocricus,Collinsium and Collinsovermis. The seemingly shorter spine length in the EBS taxon and its incompleteness cast doubt on the validity of this character, although it may mean that the EBS form occupies a basal position within Collinsovermidae. Likewise, we identified that an antero-lateral change in spine number per set characterised Acinocricus,Collinsovermis and, less markedly, Collinsium, but we cannot be sure at present whether this trait is diagnostic of Collinsovermidae as a whole. LSID urn:lsid:zoobank.org:act:41E7E111-B628-42DC-AE3A-0290D5F25DB3 Derivation of name After the type genus Collinsovermis. Included genera Acinocricus Conway Morris & Robison, 1988, unnamed form from Emu Bay Shale (García-Bellido et al. 2013), Collinsium Yang et al., 2015, Collinsovermis Caron & Aria, 2020. Diagnosis Luolishaniid lobopodians with stout bodies and paired spinules on anterior lobopods up to c. 2.5 times as long as lobopod diameter, and spaced apart c. 1/3 of lobopod diameter. Remarks Collinsovermidae differ from other luolishaniid lobopodians by the length and spacing of their appendicular spinules, as diagnosed above. The need to create a familial-level rank arises with the demonstrated cladistic grouping of Collinsovermis,Acinocricus and Collinsium, which is helpful in discussing diversity across an ever larger luolishaniid clade. The extent of the presence of long and elongate dorsal spines is another potential character that could inform the monophyly of this group or a sub-group within Collinsovermidae, since spines at least twice as long as body diameter in Luolishania are present only on a few post-frontal somites, possibly from somite 2 to somite 4, whereas they cover most of the body in Acinocricus,Collinsium and Collinsovermis. The seemingly shorter spine length in the EBS taxon and its incompleteness cast doubt on the validity of this character, although it may mean that the EBS form occupies a basal position within Collinsovermidae. Likewise, we identified that an antero-lateral change in spine number per set characterised Acinocricus,Collinsovermis and, less markedly, Collinsium, but we cannot be sure at present whether this trait is diagnostic of Collinsovermidae as a whole. LSID urn:lsid:zoobank.org:act:41E7E111-B628-42DC-AE3A-0290D5F25DB3 Derivation of name After the type genus Collinsovermis. Included genera Acinocricus Conway Morris & Robison, 1988, unnamed form from Emu Bay Shale (García-Bellido et al. 2013), Collinsium Yang et al., 2015, Collinsovermis Caron & Aria, 2020. Diagnosis Luolishaniid lobopodians with stout bodies and paired spinules on anterior lobopods up to c. 2.5 times as long as lobopod diameter, and spaced apart c. 1/3 of lobopod diameter. Remarks Collinsovermidae differ from other luolishaniid lobopodians by the length and spacing of their appendicular spinules, as diagnosed above. The need to create a familial-level rank arises with the demonstrated cladistic grouping of Collinsovermis,Acinocricus and Collinsium, which is helpful in discussing diversity across an ever larger luolishaniid clade. The extent of the presence of long and elongate dorsal spines is another potential character that could inform the monophyly of this group or a sub-group within Collinsovermidae, since spines at least twice as long as body diameter in Luolishania are present only on a few post-frontal somites, possibly from somite 2 to somite 4, whereas they cover most of the body in Acinocricus,Collinsium and Collinsovermis. The seemingly shorter spine length in the EBS taxon and its incompleteness cast doubt on the validity of this character, although it may mean that the EBS form occupies a basal position within Collinsovermidae. Likewise, we identified that an antero-lateral change in spine number per set characterised Acinocricus,Collinsovermis and, less markedly, Collinsium, but we cannot be sure at present whether this trait is diagnostic of Collinsovermidae as a whole. Data Archiving statement This published work and the nomenclatural act it contains, have been registered in ZooBank: http://zoobank.org/References/D5551921-7DCA-4B7E-B8B1-85FF5EBD711D.