@misc{indiciae341debf57184,
  title = {New Analyses of Echinoderms.},
  author = {F W Clarke and R M Kamm},
  year = {1917},
  doi = {10.1073/pnas.3.6.401},
  url = {https://pubmed.ncbi.nlm.nih.gov/16576226/},
  note = {Source identifier: 16576226}
}