Examples of fossil species found at Highfield Farm

Fossil Group: Brachiopod
Species: Alipunctifera kaihikuana
Stage: Kaihikuan
Location: Gully A, Highfield Farm
Collected by:
Comment: 

Fossil Group: Brachiopod
Species: Maorirhynconella nuggetensis
Stage: Kaihikuan
Location: Punawai Quarry
Collected by: Ian Ladds
Comment: A rare find of this fossil in this area 

Fossil Group: Brachiopod
Species: Mentzeliopsis spinosa
Stage: Kaihikuan
Location: Gully A, Highfield Farm
Collected by:
Comment: 

Fossil Group: Brachiopod
Species: Oxycolpella (Athyris) kaihikuana
Stage: Kaihikuan
Location: Gully B, Highfield Farm
Collected by: Ian Ladds
Comment: 

Fossil Group: Bivalve
Species: Maoritrigonia sp.
Stage: Kaihikuan
Location: Gully A, Highfield Farm
Collected by: David Briggs
Comment: Various Trigonia have been collected in Highfield, from different strata (see specimen from Otapirian)

Fossil Group: Gastropod
Species: Patella nelsonensis.
Stage: Kaihikuan
Location: Gully B, Highfield Farm
Collected by: Ian Ladds
Comment: 

Fossil Group: Anthozoa
Species: Eoheteropora maorica​
Stage: Kaihikuan
Location: Gully A, Highfield Farm
Collected by: David Briggs
​Comment: Previously referred to Bryozoans, and known as  Monotrypella maorica. Now assigned to anthozoa.

Fossil Group: Zoophycos?
Species: ​Un-named
Stage: Kaihikuan
Location: Gully B, Highfield Farm
Collected by: David Briggs
​Comment: Identification uncertain; believed to be a trace fossil of a wormlike creature that feeds by browsing from a central burrow.

Fossil Group: Brachiopod
Species: ​Retzia reticulata
Stage: Oretian
Location: Gully B, Highfield Farm
Collected by: Ian Ladds
Comment: 

Fossil Group: Brachiopod
Species: ​Oxycolpella wreyi
Stage: Oretian?
Location: Gully B, Highfield Farm
Collected by: David Briggs
Comment: 

Fossil Group: Bivalve
Species: Manticula problematica
Stage: Otamitan
Location: Gully B, Highfield Farm
Collected by: Ian Ladds
Comment: Manticula specimens show considerable variation in size and shape. Some are elongated, some round; a few are 'inflated' and have large, bulbous shells. Whether they represent different species is unclear.

Fossil Group: Bivalve
Species: Mysidoptera riceae
Stage: Otamitan
Location: Scree, east side of Sugar Loaf, Highfield Farm
Collected by: David Briggs
Collection date: 16/10/2016

Fossil Group: Gastropod
Species: Pleurotomaria hectori
Stage: Otamitan
Location: 88 Stream, Highfield Farm
Collected by: David Briggs
Comment: 

Fossil Group: Ammonite
Species: Rhacophyllites debilis
Stage: Otamitan
Location: 88 Stream, Highfield
​Collected by: Ian Ladds
​Comment: 

Fossil Group: Ammonite
Species: Arcestes arnouldi
Stage: Otamitan
Location: Fault Gully, Highfield
​Collected by: David Briggs
​Comment: ​Identification provisional. Note the deeply eroded sutures.

Fossil Group: Bivalve
Species: Monotis sp.
Stage: Warepan
Location: Top end, Ram Gully, Highfield
​Collected by: Ian Ladds
​Comment: Several different species of Monotis are found, with M. richmondii the most common, but differentiation is not always easy. 

Fossil Group: Bivalve
Species: Maoritrigonia sp.
Stage: Otapirian
Location: Ram Gully, Highfield Farm
Collected by: Ian Ladds
Comment: Image shows original and a plaster cast.