Sample 69A Dt 53A could be Aptian or Neocomian on the basis of Conoriboides sp. Being common in the sample. This undescribed species was found in the Aptian part of the section in ARCO’s Suside No. 1 where it was encountered first in a side wall core at 12,911 feet and was common in ditch samples at 12,920 feet, 12,940 feet, and 13,000 feet. This particular form seem to be limited to the early part of the Cretaceous section in northeastern Alaska; it occurs in the lower Cretaceous beds in Avak test well no. 1 and was found in sample 69A Dt 143.4. It probably has a Neocomian-Aptian range. Distorted tests of Haplophragmoides sp. Are also common in sample 53A. Other forams include a few specimens of Gaudryina tailleuri Tappan (verneuiline form), Ammobaculites sp. Aff. A. alaskensis Tappan, and a short compressed Marginulina with 8 costae.

Foraminifera found in most of the sample suggest a Jurassic age. Haplophragmoides barrowensis Tappan, described from early Jurassic beds, is common in 69A Dt 58 (0-50 ft. below basal Ignek) along with a few specimens of 3 other forms (Ammodiscus asper (Terquem), a test of Triplasia sp., and several tests of a verneuiline form of Gaudryina tailleuri Tappan. Specimens of the latter were also found in sample 69A Dt 61 (between two sands at base of Ignek type section) associated with numerous specimens of Trochammina sablei Tappan, a Jurassic form. Also common in the last mentioned sample are specimens of Haplophramoides not well enough preserved to identify specifically. Other forams in the sample include a specimen each of Bathsiphon, Ammodiscus, and Ammobaculites, and 6 tests of Gaudryina sp. Cf. G. kelleri Tappan. In the pebble shale sample bearing the same number (69A Dt 61) Haplophramoides canui Cushman is abundant. Other forams include a piece of a Bathysiphon (possibly the Jurassic form B. anomalocoilia Tappan) and broken pieces of both wide and narrow forms of coarse grained specimens of Ammobaculites.

Sample 69A Dt 60B (from 50 ft. + between upper and lower sands at base of type section of the Ignek Formation) definitely has a Jurassic foram fauna. There are common specimens of the large biumbilicate Jurassic form of Haplophragmoides canui Cushman, plus numerous specimens of Trochammina sablei Tappan, a test of T. canningensis Tappan, and a few specimens of Lituotuba irregularis Tappan, all described from Jurassic beds. Besides these there are specimens of Gaudryina tailleuri Tappan, Glomospira perplexa Franke, and a large coarse textured Ammobaculites with a large coiled section (Ammobaculites sthenarus (Tappan). The latter was described as a Triassic form (PP 236-A) from ditch material in Simpson test well 1, but a foram described by Tappan in her Jurassic paper (PP 236-B) under the name of Ammobaculites barrowensis is the same species. The so-called Triassic specimens are juvenile forms which came from the Jurassic beds in the test hole. I reported this discrepancy to HLT in May 1956 and she conceded the error. The name A. sthenarus has priority over A. barrowensis.

Sample 69A Dt 60A (0-50 ft. above basal Ignek sand) yielded a half dozen or more species which are not too well preserved, but both Haplophragmoides barrowensis Tappan and H. canui Cushman seem to be represented. There are also a few specimens of Gaudryina tailleuri Tappan which are the same as forms found in 69A Dt 60B and 2 specimens that appear to be microspheric forms of Triplasia kingakensis Tappan, described from early Jurassic beds in South Barrow test well 3. Other forams are specimens of Bathysiphon, Ammodiscus, and crushed and distorted tests of Trochammina sp.

Sample 69A Dt 53B (0-75 ft. above basal Ignek sandstone) has several Jurassic foraminifers including Trochammina canningensis Tappan, T. sablei Tappan, Haplophragmoides canui Cushman (common), Gaudryina milleri Tappan, Ammodiscus siliceous (Terquem) ?, Glomospira perplexa Franke, plus a few nondescript forms.

Sample 69A Dt 57 (0-100 ft. above basal Ignek sandstone) yielded numerous specimens of Haplophragmoides canui Cushman and Gaudryina kelleri Tappan described from Jurassic beds, several specimens of Trochammina canningensis Tappan, plus specimens of T. sablei Tappan, Ammodiscus aspera (Terquem) and Glomospira perplexa Franke. Although the sample is listed as taken from 0-100 feet above the basal Ignek sandstone, I think it comes within the Jurassic beds.