Occurrence record: Malacology:C.188733

Preserved specimen of Glycymeris (Glycymeris) grayana (Dunker, 1857) | Gray's Bittersweet Clam recorded on 1971-08/1971-08

API

Dataset

Data partner	OZCAM (Online Zoological Collections of Australian Museums) Provider
Data resource	Australian Museum provider for OZCAM
Institution code	Australian Museum Supplied institution code "AM"
Collection	Australian Museum Malacology Collection Supplied collection code "Malacology"
Catalog number	C.188733
Other catalog numbers	["ecatalogue.irn:10099797,urn:catalog:AM:Malacology:C.188733"]
Record type	Preserved specimen Supplied basis "PreservedSpecimen"
Identified by	Loch, Mr Ian W - Australian Museum - Malacology
Collector	J. Kerslake
License	CC-BY 3.0 (Au)
Presence/Absence	PRESENT
Date identified	2026-01-20

Event

Event ID	urn:australianmuseum.net.au:Events:10035268
Occurrence date	[date not supplied] Year: 1971, Month: 8, Day: Supplied date "1971-08/1971-08"
Date precision	MONTH

Taxonomy

Scientific name	Glycymeris (Glycymeris) grayana Supplied scientific name "Glycymeris grayana (Dunker, 1857)"
Identified to rank	species
Common name	Gray's Bittersweet Clam
Kingdom	Animalia
Phylum	Mollusca
Class	Bivalvia
Order	Arcida
Family	Glycymerididae
Genus	Glycymeris
Species	Glycymeris grayana
Name match metric	canonicalMatch
Accepted name	Glycymeris grayana (Dunker, 1857)
Scientific name authorship	(Dunker, 1857)
Name parse type	SCIENTIFIC
Name according to	(Dunker, 1857)

Geospatial

Country	Australia
State or Territory	New South Wales
Latitude	-33.7 Supplied as: "-33.7"
Longitude	151.3 Supplied as: "151.3"
Datum	EPSG:4326
Verbatim locality	Sydney, Narrabeen Beach, N end
Location remarks	[MAL# 25568 B] Australia, New South Wales, Sydney, Narrabeen Beach, N end (33° 42' 00" S, 151° 18' 00" E) /08/1971 - /08/1971, Kerslake, J(Collector)
Coordinate precision	Unknown
Coordinate uncertainty (in metres)	1000.0
Terrestrial	true
Verbatim latitude	33° 42' 00" S
Biome	TERRESTRIAL
Marine	false
Country Code	AU
Verbatim longitude	151° 18' 00" E

Additional properties

verbatim uncertainty	100m-1km

User flagged issues

Data quality tests

Test name	Result
Geodetic datum assumed WGS84	Warning
Show/Hide 94 passed properties
Ambiguous collection	Passed
Ambiguous institution	Passed
Basis of record badly formed	Passed
Collection match fuzzy	Passed
Collection not matched	Passed
CONTINENT_COORDINATE_MISMATCH	Passed
Continent country mismatch	Passed
Continent derived from coordinates	Passed
CONTINENT_DERIVED_FROM_COUNTRY	Passed
Continent invalid	Passed
Coordinates centre of country	Passed
Supplied coordinates centre of state	Passed
Coordinate invalid	Passed
Coordinates are out of range for species	Passed
Coordinates converted to WGS84	Passed
Decimal latitude/longitude conversion failed	Passed
Coordinate reprojection suspicious	Passed
Coordinate rounded	Passed
Coordinate uncertainty meters invalid	Passed
Coordinates dont match supplied country	Passed
Country inferred from coordinates	Passed
Country invalid	Passed
Country mismatch	Passed
Different owner institution	Passed
First of the century	Passed
First of the month	Passed
First of the year	Passed
Unrecognized geodetic datum	Passed
Georeferenced after occurrence date	Passed
Identified date invalid	Passed
Identified date unlikely	Passed
Identification date before occurrence date	Passed
Institution and Collection mismatch	Passed
Institution match fuzzy	Passed
Institution not matched	Passed
Interpretation error	Passed
Invalid scientific name	Passed
Location not supplied	Passed
Missing collection date	Passed
Modified date invalid	Passed
Modified date unlikely	Passed
Multimedia date invalid	Passed
Multimedia uri invalid	Passed
Name not supplied	Passed
Occurrence status inferred from basis of record	Passed
Occurrence status inferred from individual count	Passed
Occurrence status unparsable	Passed
Latitude is negated	Passed
Longitude is negated	Passed
Presumed swapped coordinate	Passed
Recorded date invalid	Passed
Recorded date mismatch	Passed
Recorded date unlikely	Passed
SCIENTIFIC_NAME_AND_ID_INCONSISTENT	Passed
Sensitivity report invalid	Passed
Sensitivity report not loadable	Passed
Coordinates dont match supplied state	Passed
Taxon affinity species	Passed
TAXON_CONCEPT_ID_NOT_FOUND	Passed
Taxon confer species	Passed
Taxon default match	Passed
Taxon error	Passed
Taxon excluded	Passed
Taxon excluded associated	Passed
Taxon homonym	Passed
Taxon indeterminate species	Passed
Taxon match aggregate	Passed
Taxon match fuzzy	Passed
Taxon match higher rank	Passed
TAXON_MATCH_NAME_AND_ID_AMBIGUOUS	Passed
Taxon match none	Passed
TAXON_MATCH_TAXON_CONCEPT_ID_IGNORED	Passed
Taxon misapplied	Passed
Taxon misapplied matched	Passed
Taxon parent child synonym	Passed
Taxon question species	Passed
Resource taxonomic scope mismatch	Passed
Taxon species plural	Passed
Coordinate precision and uncertainty transposed	Passed
Uncertainty not specified	Passed
Supplied country not recognised	Passed
Kingdom not recognised	Passed
Unrecognized collection code	Passed
Unrecognized institution code	Passed
Supplied coordinates are zero	Passed
Biosecurity issue	Passed
Suspected outlier	Passed
Geospatial issue	Passed
Habitat incorrect for species	Passed
Taxon misidentified	Passed
Taxonomic issue	Passed
Temporal issue	Passed
Other issue	Passed
Duplicate record	Passed
Show/Hide 7 missing properties
Missing geodetic datum	Missing
Missing georeferenced by	Missing
Missing georeference protocol	Missing
Missing georeference sources	Missing
Missing georeference verification status	Missing
Missing georeference date	Missing
Missing taxon rank	Missing
Show/Hide 22 tests that have not been run
Coordinate precision invalid	Unchecked (lack of data)
Footprint SRS invalid	Unchecked (lack of data)
Footprint WKT mismatch	Unchecked (lack of data)
Footprint WKT invalid	Unchecked (lack of data)
TAXON_MATCH_SCIENTIFIC_NAME_ID_IGNORED	Unchecked (lack of data)
TAXON_MATCH_TAXON_ID_IGNORED	Unchecked (lack of data)
SCIENTIFIC_NAME_ID_NOT_FOUND	Unchecked (lack of data)
TAXON_ID_NOT_FOUND	Unchecked (lack of data)
Depth value supplied in feet	Unchecked (lack of data)
Depth unlikely	Unchecked (lack of data)
Min and max depth reversed	Unchecked (lack of data)
Depth value non-numeric	Unchecked (lack of data)
Elevation unlikely	Unchecked (lack of data)
Min and max altitude reversed	Unchecked (lack of data)
Altitude value supplied in feet	Unchecked (lack of data)
Altitude value non-numeric	Unchecked (lack of data)
Type status invalid	Unchecked (lack of data)
References uri invalid	Unchecked (lack of data)
Individual count invalid	Unchecked (lack of data)
Individual count conflicts with occurrence status	Unchecked (lack of data)
Georeferenced date unlikely	Unchecked (lack of data)
Georeferenced date invalid	Unchecked (lack of data)

Additional political boundaries information

Area Management
Hunter Analysis Mask	GER Hunter Analysis Mask
IBRA (Interim Biogeographic Regionalisation for Australia (IBRA) Version 7 (Regions)	Sydney Basin
IBRA (Interim Biogeographic Regionalisation for Australia (IBRA) Version 7 (Subregions), contextual (polygon)	Pittwater
NRM Regions 2010	Sydney Metro
NRM Regions 2017	Greater Sydney
Natural Resource Management (NRM) Regions 2023	Greater Sydney
Area management
National Landcare Program Management Units 2018	Greater Sydney
Biodiversity
IBRA 6 Regions	Sydney Basin
IBRA 7 Regions	Sydney Basin
IBRA 7 Subregions	Pittwater
Hydrology
Australian Drainage Divisions 2021	South East Coast (NSW)
Drainage Divisions Level 1	South East Coast (NSW)
Drainage Divisions Level 2	SYDNEY COAST-GEORGES RIVER
Indigenous
Indigenous Areas 2021	Northern Beaches
Indigenous Locations 2021	Pittwater
Indigenous Regions 2021	Sydney - Wollongong
RATSIB (representative Aboriginal/Torres Strait Islander body) Areas 2024	New South Wales
Marine
States including coastal waters	New South Wales (including Coastal Waters)
Political
ASGS Australian States and Territories	New South Wales
Australian States and Territories	New South Wales
Commonwealth Electoral Divisions 2021	Mackellar
Electorates March 2025	Mackellar
Local Government Areas 2011	Pittwater (A)
Local Government Areas 2012 deprecated	Pittwater
Local Government Areas 2023	Northern Beaches
Local Government Areas PSMA 2018	NORTHERN BEACHES COUNCIL
NSW Local Land Services Regions	Greater Sydney
PSMA ABS Census Indigenous Language Speakers by Area - I01B (2016)	7
PSMA ABS Census Selected Person Characteristics by Indigenous Status by Area - I01A (2016)	1394
PSMA ABS Greater Capital City Statistical Areas (2016)	GREATER SYDNEY
PSMA ABS SA2 Statistical Areas (2016)	WARRIEWOOD - MONA VALE
PSMA ABS SA3 Statistical Areas (2016)	PITTWATER
PSMA ABS SA4 Statistical Areas (2016)	SYDNEY - NORTHERN BEACHES
PSMA Commonwealth Electoral Boundaries (2018)	MACKELLAR
PSMA Indigenous Areas (2016)	NORTHERN BEACHES
PSMA Indigenous Locations (2016)	PITTWATER
PSMA Indigenous Regions (2016)	SYDNEY - WOLLONGONG
PSMA Remoteness Areas (2016)	Major Cities of Australia
PSMA State Electoral Boundaries (2018)	LEGISLATIVE COUNCIL
PSMA States (2016)	NEW SOUTH WALES
State Electoral Divisions 2022	Pittwater
World Country Boundaries	Australia
Sensitive Data Layers
Phylloxera Infection Zone - Sydney, New South Wales	Sydney Phylloxera Zone
Social
Australia 2021	Australia
Destination Zones 2021	North Narrabeen - Warriewood (South)
Greater Capital City Statistical Areas 2021	Greater Sydney
Postal Areas 2021	2101
Remoteness Areas 2021	Major Cities of Australia
States and Territories 2021	New South Wales
Statistical Areas Level 1	12202169101
Statistical Areas Level 2	North Narrabeen - Warriewood (South)
Statistical Areas Level 3	Pittwater
Statistical Areas Level 4	Sydney - Northern Beaches
Tourism Regions 2021	Sydney
Vegetation
Australia's Indigenous forest estate (2013) v2.0	Non-Indigenous, Native forest
Forests of Australia (2013) v2.0	Other native forest
Forests of Australia 2018B	Non forest
NVIS 4.1 Major Vegetation Groups	Cleared, non-native vegetation, buildings
NVIS 4.1 Major Vegetation Subgroups	Cleared, non-native vegetation, buildings
Tenure of Australia's forests (2013) v2.0	Private Freehold
Vegetation types - native	Eucalypt woodlands
Vegetation types - present	cleared, non-native vegetation, buildings

Environmental sampling for this location

Biodiversity
Occurrence Density	34723.0 frequency
Species Richness	4153.0 frequency
Climate
Precipitation - annual (Bio12)	1227.0 mm
Precipitation - coldest quarter (Bio19)	269.33334 mm
Precipitation - driest period (Bio14)	14.0 mm
Precipitation - driest quarter (Bio17)	213.66667 mm
Precipitation - seasonality (Bio15)	26.5 mm
Precipitation - warmest quarter (Bio18)	354.16666 mm
Precipitation - wettest period (Bio13)	34.666668 mm
Precipitation - wettest quarter (Bio16)	408.33334 mm
Radiation - annual mean (Bio20)	16.3 MJ/m2/day
Radiation - seasonality (Bio23)	34.166668
Radiation - warmest quarter (Bio26)	21.55 MJ/m2/day
Temperature - annual mean (Bio01)	18.016666 degrees C
Temperature - annual range (Bio07)	19.516666 degrees C
Temperature - coldest period min (Bio06)	7.5 degrees C
Temperature - coldest quarter mean (Bio11)	13.25 degrees C
Temperature - diurnal range mean (Bio02)	9.316667 degrees C
Temperature - driest quarter mean (Bio09)	14.416666 degrees C
Temperature - isothermality (Bio03)	0.48 %
Temperature - seasonality (Bio04)	1.2333333
Temperature - warmest period max (Bio05)	27.0 degrees C
Temperature - warmest quarter (Bio10)	22.45 degrees C
Temperature - wettest quarter mean (Bio08)	21.0 degrees C
WorldClim 2.1: Precipitation - annual	1291.0 mm
WorldClim 2.1: Precipitation - coldest quarter	278.0 mm
WorldClim 2.1: Precipitation - driest month	68.0 mm
WorldClim 2.1: Precipitation - driest quarter	227.0 mm
WorldClim 2.1: Precipitation - seasonality	26.329493 mm
WorldClim 2.1: Precipitation - warmest quarter	369.0 mm
WorldClim 2.1: Precipitation - wettest month	147.0 mm
WorldClim 2.1: Precipitation - wettest quarter	430.0 mm
WorldClim 2.1: Temperature - annual mean	17.7875 °C
WorldClim 2.1: Temperature - annual range	17.4 °C
WorldClim 2.1: Temperature - coldest month min	8.4 °C
WorldClim 2.1: Temperature - coldest quarter mean	13.283333 °C
WorldClim 2.1: Temperature - diurnal range mean	7.8083334 °C
WorldClim 2.1: Temperature - driest quarter mean	13.799999 °C
WorldClim 2.1: Temperature - isothermality	44.87548 %
WorldClim 2.1: Temperature - seasonality	347.66183
WorldClim 2.1: Temperature - warmest month max	25.8 °C
WorldClim 2.1: Temperature - warmest quarter mean	21.833332 °C
WorldClim 2.1: Temperature - wettest quarter mean	21.816666 °C
WorldClim: Temperature - isothermality	48.0 %
Substrate
Moisture Index - annual mean (Bio28)	0.825
Moisture Index - highest quarter mean (Bio32)	1.0
Elevation	13.0 m

Group	Field Name	Original Value	Processed Value


Classification	Scientific name	Glycymeris grayana (Dunker, 1857)	Glycymeris (Glycymeris) grayana
	Match type		canonicalMatch
	Phylum id		https://biodiversity.org.au/afd/taxa/4fb59020-e4a8-4973-adca-a4f662c4645c
	Family id		https://biodiversity.org.au/afd/taxa/1ccf678b-d2ba-4e51-b285-831e79f7b6a0
	Taxon concept ID		https://biodiversity.org.au/afd/taxa/466c7899-8a80-4ee6-ae67-e85d5456fe9a
	Order		Arcida
	Taxon rank id		7000
	Accepted name usage	Glycymeris grayana (Dunker, 1857)
	Species id		https://biodiversity.org.au/afd/taxa/466c7899-8a80-4ee6-ae67-e85d5456fe9a
	Genus	Glycymeris	Glycymeris
	Left		61249
	Scientific name authorship		(Dunker, 1857)
	Taxon rank		species
	Genus id		https://biodiversity.org.au/afd/taxa/a1c17dc5-0feb-443e-8395-4c70c7482aff
	Name type		SCIENTIFIC
	Vernacular name		Gray's Bittersweet Clam
	Name according to	(Dunker, 1857)
	Order id		https://biodiversity.org.au/afd/taxa/887f14c1-4f39-4ca8-b8c4-019b6b28bdca
	Right		61249
	Kingdom		Animalia
	Specific epithet	grayana
	Class id		https://biodiversity.org.au/afd/taxa/d6ab0629-da3d-4e6a-8400-301515cb3f16
	Phylum	Mollusca	Mollusca
	Class	Bivalvia	Bivalvia
	Species		Glycymeris grayana
	Family		Glycymerididae
	Kingdom id		https://biodiversity.org.au/afd/taxa/4647863b-760d-4b59-aaa1-502c8cdf8d3c
Event	Event ID	urn:australianmuseum.net.au:Events:10035268
	Year		1971
	Month		8
	Date precision		MONTH
	Event date	1971-08/1971-08
Identification	Date identified	2026-01-20	2026-01-20
Identification	Identified by	[Loch, Mr Ian W - Australian Museum - Malacology]
Occurrence	Catalog number	C.188733
	Occurrence status		PRESENT
	Basis of record	PreservedSpecimen	PRESERVED_SPECIMEN
	Modified	2026-01-20	2026-01-20
	Collection code	Malacology
	Institution code	AM
	Recorded by	J. Kerslake
	Other catalog numbers	[ecatalogue.irn:10099797,urn:catalog:AM:Malacology:C.188733]
Attribution	Data resource		Australian Museum provider for OZCAM
	Collection		Australian Museum Malacology Collection
	License		CC-BY 3.0 (Au)
	Data provider uid		dp20
	Provenance		Published dataset
	Data Resource ID	dr340	dr340
	Institution ID		in4
	Data partner		OZCAM (Online Zoological Collections of Australian Museums) Provider
	Institution		Australian Museum
	Data hub uid	[dh1]
	Collection ID		co114
Location	Country	Australia	Australia
	Decimal latitude	-33.7	-33.7
	Terrestrial	true	true
	Decimal longitude	151.3	151.3
	State province	New South Wales	New South Wales
	Verbatim locality	Sydney, Narrabeen Beach, N end
	Verbatim latitude	33° 42' 00" S
	Biome		TERRESTRIAL
	Coordinate uncertainty in meters	1000	1000.0
	Lga	Pittwater (A)
	Marine	false	false
	Location remarks	[MAL# 25568 B] Australia, New South Wales, Sydney, Narrabeen Beach, N end (33° 42' 00" S, 151° 18' 00" E) /08/1971 - /08/1971, Kerslake, J(Collector)
	Country code		AU
	Verbatim longitude	151° 18' 00" E
	Geodetic datum		EPSG:4326

Search Specimens

Occurrence record: Malacology:C.188733

Dataset

Event

Taxonomy

Geospatial

Additional properties

User flagged issues

Data quality tests

Additional political boundaries information

Environmental sampling for this location

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