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    • Pterioida

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Creative Commons Flickr Photos Tagged "Pterioida."
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Recent observations

Photos / Sounds

17184728867 4204713b13 s

What

Stiff Pen Shell Atrina rigida

Observer

finatic

Date

April 24, 2015 03:50 PM PDT

Description

Galveston County, Texas, US

Photos / Sounds

Square

Observer

sarka

Date

May 5, 2015

Description

Found sticking out upright in sea grass area of a bay.

Photos / Sounds

What

horse mussel Atrina zelandica

Observer

lisa_bennett

Date

February 24, 2015

Description

Found washed up on the beach.

Photos / Sounds

16698225994 ffbc050652 s

What

Black Lip Pearl Shell Pinctada margaritifera

Observer

trcarlisle

Date

April 24, 2015 12:31 PM GST

Photos / Sounds

What

Stiff Pen Shell Atrina rigida

Observer

marlo

Date

April 17, 2015

Description

Dead in sand.

H: 140 mm
W: 51 mm

Photos / Sounds

17020428922 c1c516ab2d s

What

Black Lip Pearl Shell Pinctada margaritifera

Observer

trcarlisle

Date

May 10, 2013 06:32 PM GST

Description

Valve interior with pearl beginning to form

Photos / Sounds

17021874675 4c334296f2 s

What

Black Lip Pearl Shell Pinctada margaritifera

Observer

trcarlisle

Date

November 2, 2012 04:06 PM GST

Description

Shucked to display interior

Photos / Sounds

Square

What

Winged Oysters Genus Pteria

Observer

tierraiberica

Date

August 24, 2007

Photos / Sounds

Square

What

Stiff Pen Shell Atrina rigida

Observer

invertzoo

Date

December 13, 2011

Description

A great number of pen shells (brown) washed up after a small storm on Sanibel.

Many other shells also washed up, (white and other colors) mostly bivalves.

Photos / Sounds

Square

Observer

invertzoo

Date

December 9, 2011

Description

A few stiff pen shells washed up on the beach.

After storms many hundreds get washed up.

Photos / Sounds

What

Stiff Pen Shell Atrina rigida

Observer

fmoretzsohn

Date

January 1, 2011

Description

While visiting Sanibel Island on a cold New Year's Day in 2011, I came across an arrangement of shells of the Stiff Pen Shell, Atrina rigida, on the beach, forming an ellipsis, with the year 2011 written with smaller shells.

I found many large, empty pen shells in the rich beach drift along the shore of Sanibel Island, especially on the southeastern part of the island.

Read more about this bivalve at the website of the Bailey-Matthews National Shell Museum, on Sanibel Island:
http://shellmuseum.org/shells/shelldetails.cfm?id=188

Photos / Sounds

Square

Date

March 1, 2014 12:00 PM HST

Description

Common Name: bivalve, Scientific Name: Isognomon perna, Event #: MOOCUBE_02, Specimen #: XMOO_3573, Location: UC Berkeley Gump Station, Moorea, French Polynesia

View all observations

Description from Wikipedia

The Pterioida are a suborder of large and medium-sized saltwater clams, marine bivalve mollusks. It includes five families, among them the Pteriidae (pearl oysters and winged oysters).

No range data available.