Vertebrates

The red knot is a tiny shorebird that undertakes a mind-boggling migration from the tip of South America all the way to the Arctic Circle. One of the few stops on that marathon journey is the Delaware Bay, an estuary that offers a banquet for migrating birds. Here, for some 20,000 years, red knots have flocked by the thousands to fuel their journey. But humans may be writing a tragic ending to this extraordinary evolutionary success story, unless biologists armed with an unusual tool can win a race against time. Photo Credit: Kevin Karlson read moreDuration: 5:47Published: Wed, 16 Nov 2011 19:12:33 +0000

Malagasy HippopotamusHippopotamus madagascariensis skeleton with a H. amphibius skull.Pre-1923.From Wikimedia Commons

Angelshark (Squatina squatina) off Chico Beach, Lanzarote, Canary Islands. From Wikimedia commons

General Description: AR501120, AR501121, AR501122, and AR501123 are images of the same specimen, USNM 97619. Envelope Notes Verbatim: USNM 97619, (Photo NG) Hyla aurantiaca planicola.

General Description: AR502430 and AR502431 are images of the same specimens, USNM 11475. Envelope Notes Verbatim: USNM 11475, Cotypes, Pseudotriton ruber sticticeps, ?, Miss Cochran #3745.

Envelope Notes Verbatim: USNM 97179, Cycloramphus (= boulengeri) neglectus, Cotype, Lutz.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.

All Biocode files are based on field identifications to the best of the researcher’s ability at the time.