English Receptaculites Cited by user Smith609 on 23 May 2022 Receptaculites is the name-bearing genus for an extinct group of conspicuous benthic marine genera, the receptaculitids (formally Receptaculitaceae or Receptaculitidae)…
English Cyclocrinitids Cited by user Smith609 on 23 May 2022 Early (mid-Ordovician--early-Silurian) Dasycladalean algae, resembling but probably not closely related to the Receptaculitids.