Size comparison of six specimens (BMM 3771, 3772, 3770, 3777, 3775, and 3778) of Caeruleum miraculum with a human hand for reference. All assigned specimens are shown except for BMM 3776, for which no size estimate is available.
References
  (BMM 3771)
"A new species of fossil lamprey (Petromyzontida: Petromyzontiformes) from Hebei, China"  (BMM 3772)
"A new species of fossil lamprey..."  (BMM 3770, holotype)
"A new species of fossil lamprey..."  (BMM 3777)
"A new species of fossil lamprey..."  (BMM 3775)
"A new species of fossil lamprey..."  (BMM 3778)
"A new species of fossil lamprey..."
Own work
SlvrHwk