Australian Biological Resources Study

Australian Faunal Directory

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Family PTILOMETRIDAE


Compiler and date details

2012 - Tim O'Hara, Museum Victoria, Carlton, Victoria, Australia

2001 - Tim O'Hara, Museum Victoria, Carlton, Victoria, Australia

1995 - F.W.E. Rowe & J. Gates, Australian Museum, Sydney, New South Wales, Australia

Introduction

The family Ptilometridae is confined to the southern temperate coasts of Australia. There is a single endemic genus, in which two species are recorded.

Ptilometrids are similar to calometrids but are distinguished from other comatulid families by the following combination of character states: arms more than 10; P1 not weak, first two segments of P1 not noticeably enlarged; cirri very long and slender, as long as or longer than arms; most segments with dorsal spine, more than 25 segments per cirrus, P1 similar to P2, but shorter and smaller; centrodorsal large and broad, discoidal or columnar, the numerous cirri more or less in 15 crowded columns, radial areas of centrodorsal indistinct.

 

History of changes

Note that this list may be incomplete for dates prior to September 2013.
Published As part of group Action Date Action Type Compiler(s)
15-Sep-2023 11-Dec-2012 MODIFIED
12-Feb-2010 (import)